def detect_image(self, image):
image = [np.array(image)]
molded_images, image_metas, windows = mold_inputs(self.config, image)
image_shape = molded_images[0].shape
anchors = get_anchors(self.config, image_shape)
anchors = np.broadcast_to(anchors, (1, ) + anchors.shape)
detections, _, _, mrcnn_mask, _, _, _ =\
self.model.predict([molded_images, image_metas, anchors], verbose=0)
final_rois, final_class_ids, final_scores, final_masks =\
unmold_detections(detections[0], mrcnn_mask[0],
image[0].shape, molded_images[0].shape,
windows[0])
r = {
"rois": final_rois,
"class_ids": final_class_ids,
"scores": final_scores,
"masks": final_masks,
}
visualize.display_instances(image[0], r['rois'], r['masks'],
r['class_ids'], self.class_names,
r['scores'])
def __init__(self, **kwargs):
self.__dict__.update(self._defaults)
for name, value in kwargs.items():
setattr(self, name, value)
#---------------------------------------------------#
# 计算总的类的数量
#---------------------------------------------------#
self.class_names, self.num_classes = get_classes(self.classes_path)
self.anchors = torch.from_numpy(
get_anchors(self.input_shape, self.anchors_size,
self.backbone)).type(torch.FloatTensor)
if self.cuda:
self.anchors = self.anchors.cuda()
self.num_classes = self.num_classes + 1
#---------------------------------------------------#
# 画框设置不同的颜色
#---------------------------------------------------#
hsv_tuples = [(x / self.num_classes, 1., 1.)
for x in range(self.num_classes)]
self.colors = list(map(lambda x: colorsys.hsv_to_rgb(*x), hsv_tuples))
self.colors = list(
map(lambda x: (int(x[0] * 255), int(x[1] * 255), int(x[2] * 255)),
self.colors))
self.bbox_util = BBoxUtility(self.num_classes)
self.generate()
show_config(**self._defaults)
def forward(self, h, img_size, scale=1.):
"""
Forward Region Proposal Network.
"""
n_pre_nms = 12000
n_post_nms = 2000
nms_thresh = 0.7
# get anchors predifined
n, _, hh, ww = h.shape
anchors = get_anchors(self.anchor_base, self.feat_stride, hh, ww)
# main forward
hidd = F.relu(self.conv1(h))
rpn_locs = self.loc(hidd)
rpn_scores = self.score(hidd)
# rpn_locs, rpn_scores
rpn_locs = rpn_locs.permute(0, 2, 3, 1).contiguous().view(n, -1, 4)
rpn_scores = rpn_scores.permute(0, 2, 3, 1).contiguous().view(n, -1, 2)
scores = rpn_scores[:, :, 1].data.cpu().numpy()[0]
# get rois, roi_indices
rois = get_rois_from_loc_anchors(anchors,
rpn_locs[0].data.cpu().numpy())
# clip
rois[:, ::2] = np.clip(rois[:, ::2], 0, img_size[0])
rois[:, 1::2] = np.clip(rois[:, 1::2], 0, img_size[1])
# remove < min_size
min_size = 16
min_size = min_size * scale
hs = rois[:, 2] - rois[:, 0]
ws = rois[:, 3] - rois[:, 1]
if t.is_tensor(min_size):
min_size = min_size.numpy()
keep = np.where((hs >= min_size) & (ws >= min_size))[0]
rois = rois[keep, :]
scores = scores[keep]
# Sort all (proposal, score) pairs by score from highest to lowest.
# Take top pre_nms_topN (e.g. 6000).
order = scores.ravel().argsort()[::-1]
if n_pre_nms > 0:
order = order[:n_pre_nms]
rois = rois[order, :]
# NMS
keep = py_cpu_nms(rois, nms_thresh)
keep = keep[:n_post_nms]
rois = rois[keep]
return rpn_locs, rpn_scores, rois, [0] * len(rois), anchors
def generate(self):
while True:
shuffle(self.train_lines)
lines = self.train_lines
for annotation_line in lines:
img,y=self.get_random_data(annotation_line)
height, width, _ = np.shape(img)
if len(y)==0:
continue
boxes = np.array(y[:,:4],dtype=np.float32)
boxes[:,0] = boxes[:,0]/width
boxes[:,1] = boxes[:,1]/height
boxes[:,2] = boxes[:,2]/width
boxes[:,3] = boxes[:,3]/height
box_heights = boxes[:,3] - boxes[:,1]
box_widths = boxes[:,2] - boxes[:,0]
if (box_heights<=0).any() or (box_widths<=0).any():
continue
y[:,:4] = boxes[:,:4]
anchors = get_anchors(get_img_output_length(width,height),width,height)
# 计算真实框对应的先验框，与这个先验框应当有的预测结果
assignment = self.bbox_util.assign_boxes(y,anchors)
num_regions = 256
classification = assignment[:,4]
regression = assignment[:,:]
mask_pos = classification[:]>0
num_pos = len(classification[mask_pos])
if num_pos > num_regions/2:
val_locs = random.sample(range(num_pos), int(num_pos - num_regions/2))
classification[mask_pos][val_locs] = -1
regression[mask_pos][val_locs,-1] = -1
mask_neg = classification[:]==0
num_neg = len(classification[mask_neg])
if len(classification[mask_neg]) + num_pos > num_regions:
val_locs = random.sample(range(num_neg), int(num_neg - num_pos))
classification[mask_neg][val_locs] = -1
classification = np.reshape(classification,[-1,1])
regression = np.reshape(regression,[-1,5])
tmp_inp = np.array(img)
tmp_targets = [np.expand_dims(np.array(classification,dtype=np.float32),0),np.expand_dims(np.array(regression,dtype=np.float32),0)]
yield preprocess_input(np.expand_dims(tmp_inp,0)), tmp_targets, np.expand_dims(y,0)
def get_FPS(self, image, test_interval):
image_shape = np.array(np.shape(image)[0:2])
#---------------------------------------------------------#
# 在这里将图像转换成RGB图像，防止灰度图在预测时报错。
# 代码仅仅支持RGB图像的预测，所有其它类型的图像都会转化成RGB
#---------------------------------------------------------#
image = cvtColor(image)
#---------------------------------------------------------#
# 给图像增加灰条，实现不失真的resize
# 也可以直接resize进行识别
#---------------------------------------------------------#
image_data, image_metas, windows = resize_image([np.array(image)],
self.config)
#---------------------------------------------------------#
# 根据当前输入图像的大小，生成先验框
#---------------------------------------------------------#
anchors = np.expand_dims(get_anchors(self.config, image_data[0].shape),
0)
#---------------------------------------------------------#
# 将图像输入网络当中进行预测！
#---------------------------------------------------------#
detections, _, _, mrcnn_mask, _, _, _ = self.model.predict(
[image_data, image_metas, anchors], verbose=0)
#---------------------------------------------------#
# 上面获得的预测结果是相对于padding后的图片的
# 我们需要将预测结果转换到原图上
#---------------------------------------------------#
box_thre, class_thre, class_ids, masks_arg, masks_sigmoid = postprocess(
detections[0], mrcnn_mask[0], image_shape, image_data[0].shape,
windows[0])
t1 = time.time()
for _ in range(test_interval):
#---------------------------------------------------------#
# 将图像输入网络当中进行预测！
#---------------------------------------------------------#
detections, _, _, mrcnn_mask, _, _, _ = self.model.predict(
[image_data, image_metas, anchors], verbose=0)
#---------------------------------------------------#
# 上面获得的预测结果是相对于padding后的图片的
# 我们需要将预测结果转换到原图上
#---------------------------------------------------#
box_thre, class_thre, class_ids, masks_arg, masks_sigmoid = postprocess(
detections[0], mrcnn_mask[0], image_shape, image_data[0].shape,
windows[0])
t2 = time.time()
tact_time = (t2 - t1) / test_interval
return tact_time
def get_map_out(self, image):
image_shape = np.array(np.shape(image)[0:2])
#---------------------------------------------------------#
# 在这里将图像转换成RGB图像，防止灰度图在预测时报错。
# 代码仅仅支持RGB图像的预测，所有其它类型的图像都会转化成RGB
#---------------------------------------------------------#
image = cvtColor(image)
#---------------------------------------------------------#
# 给图像增加灰条，实现不失真的resize
# 也可以直接resize进行识别
#---------------------------------------------------------#
image_data, image_metas, windows = resize_image([np.array(image)],
self.config)
#---------------------------------------------------------#
# 根据当前输入图像的大小，生成先验框
#---------------------------------------------------------#
anchors = np.expand_dims(get_anchors(self.config, image_data[0].shape),
0)
#---------------------------------------------------------#
# 将图像输入网络当中进行预测！
#---------------------------------------------------------#
detections, _, _, mrcnn_mask, _, _, _ = self.model.predict(
[image_data, image_metas, anchors], verbose=0)
#---------------------------------------------------#
# 上面获得的预测结果是相对于padding后的图片的
# 我们需要将预测结果转换到原图上
#---------------------------------------------------#
box_thre, class_thre, class_ids, masks_arg, masks_sigmoid = postprocess(
detections[0], mrcnn_mask[0], image_shape, image_data[0].shape,
windows[0])
outboxes = None
if box_thre is not None:
outboxes = np.zeros_like(box_thre)
outboxes[:, [0, 2]] = box_thre[:, [1, 3]]
outboxes[:, [1, 3]] = box_thre[:, [0, 2]]
return outboxes, class_thre, class_ids, masks_arg, masks_sigmoid
print(
'Average number of overlapping bounding boxes from RPN = {} for {} previous iterations'
.format(mean_overlapping_bboxes, EPOCH_LENGTH))
if mean_overlapping_bboxes == 0:
print(
'RPN is not producing bounding boxes that overlap the ground truth boxes. Check RPN settings or keep training.'
)
X, Y, boxes = batch[0], batch[1], batch[2]
loss_rpn = model_rpn.train_on_batch(X, Y)
write_log(callback, ['rpn_cls_loss', 'rpn_reg_loss'], loss_rpn,
train_step)
P_rpn = model_rpn.predict_on_batch(X)
height, width, _ = np.shape(X[0])
anchors = get_anchors(get_img_output_length(width, height), width,
height)
# 将预测结果进行解码
results = bbox_util.detection_out(P_rpn,
anchors,
1,
confidence_threshold=0)
R = results[0][:, 2:]
X2, Y1, Y2, IouS = calc_iou(R, config, boxes[0], width, height,
NUM_CLASSES)
if X2 is None:
rpn_accuracy_rpn_monitor.append(0)
rpn_accuracy_for_epoch.append(0)
def detect_image(self, image):
image_shape = np.array(np.shape(image)[0:2])
old_width, old_height = image_shape[1], image_shape[0]
old_image = copy.deepcopy(image)
#---------------------------------------------------------#
# Reset the original image to the size of 600 short edges
#---------------------------------------------------------#
width, height = get_new_img_size(old_width, old_height)
image = image.resize([width, height], Image.BICUBIC)
photo = np.array(image, dtype=np.float64)
#-----------------------------------------------------------#
# Image preprocessing and normalization.
#-----------------------------------------------------------#
photo = preprocess_input(np.expand_dims(photo, 0))
rpn_pred = self.model_rpn.predict(photo)
#-----------------------------------------------------------#
# The prediction result of the suggestion box network is decoded
#-----------------------------------------------------------#
base_feature_width, base_feature_height = self.get_img_output_length(
width, height)
anchors = get_anchors([base_feature_width, base_feature_height], width,
height)
rpn_results = self.bbox_util.detection_out_rpn(rpn_pred, anchors)
#-------------------------------------------------------------#
# After obtaining the suggestion box and the shared feature layer, they are passed into the classifier for prediction
#-------------------------------------------------------------#
base_layer = rpn_pred[2]
proposal_box = np.array(rpn_results)[:, :, 1:]
temp_ROIs = np.zeros_like(proposal_box)
temp_ROIs[:, :, [0, 1, 2, 3]] = proposal_box[:, :, [1, 0, 3, 2]]
classifier_pred = self.model_classifier.predict(
[base_layer, temp_ROIs])
#-------------------------------------------------------------#
# The prediction frame is obtained by decoding the suggestion box by using the prediction results of classifier
#-------------------------------------------------------------#
results = self.bbox_util.detection_out_classifier(
classifier_pred, proposal_box, self.config, self.confidence)
if len(results[0]) == 0:
return old_image
results = np.array(results[0])
boxes = results[:, :4]
top_conf = results[:, 4]
top_label_indices = results[:, 5]
boxes[:, [0, 2]] = boxes[:, [0, 2]] * old_width
boxes[:, [1, 3]] = boxes[:, [1, 3]] * old_height
font = ImageFont.truetype(font='model_data/simhei.ttf',
size=np.floor(3e-2 * np.shape(image)[1] +
0.5).astype('int32'))
thickness = max(
(np.shape(old_image)[0] + np.shape(old_image)[1]) // old_width * 2,
1)
image = old_image
for i, c in enumerate(top_label_indices):
predicted_class = self.class_names[int(c)]
score = top_conf[i]
left, top, right, bottom = boxes[i]
top = top - 5
left = left - 5
bottom = bottom + 5
right = right + 5
top = max(0, np.floor(top + 0.5).astype('int32'))
left = max(0, np.floor(left + 0.5).astype('int32'))
bottom = min(
np.shape(image)[0],
np.floor(bottom + 0.5).astype('int32'))
right = min(
np.shape(image)[1],
np.floor(right + 0.5).astype('int32'))
# 画框框
label = '{} {:.2f}'.format(predicted_class, score)
draw = ImageDraw.Draw(image)
label_size = draw.textsize(label, font)
label = label.encode('utf-8')
print(label, top, left, bottom, right)
if top - label_size[1] >= 0:
text_origin = np.array([left, top - label_size[1]])
else:
text_origin = np.array([left, top + 1])
for i in range(thickness):
draw.rectangle([left + i, top + i, right - i, bottom - i],
outline=self.colors[int(c)])
draw.rectangle(
[tuple(text_origin),
tuple(text_origin + label_size)],
fill=self.colors[int(c)])
draw.text(text_origin,
str(label, 'UTF-8'),
fill=(0, 0, 0),
font=font)
del draw
return image
from keras.optimizers import Adam
from nets.M2det_training import Generator
from nets.M2det_training import conf_loss, smooth_l1
from keras.callbacks import TensorBoard, ModelCheckpoint, ReduceLROnPlateau, EarlyStopping
from utils.utils import BBoxUtility
from utils.anchors import get_anchors
if __name__ == "__main__":
NUM_CLASSES = 21
input_shape = (320, 320, 3)
annotation_path = '2007_train.txt'
inputs = keras.layers.Input(shape=input_shape)
model = M2det.m2det(NUM_CLASSES, inputs)
priors = get_anchors((input_shape[0], input_shape[1]))
bbox_util = BBoxUtility(NUM_CLASSES, priors)
model.load_weights("model_data\M2det_weights.h5",
by_name=True,
skip_mismatch=True)
model.summary()
# 0.1用于验证，0.9用于训练
val_split = 0.1
with open(annotation_path) as f:
lines = f.readlines()
np.random.seed(10101)
np.random.shuffle(lines)
np.random.seed(None)
num_val = int(len(lines) * val_split)
num_train = len(lines) - num_val
def generate(self):
while True:
shuffle(self.train_lines)
lines = self.train_lines # [拉曼光谱数据 x1,1,x2,1,0 拉曼光谱数据....]
for annotation_line in lines:
raman,y=self.get_random_data(annotation_line)
width, height, _ = np.shape(raman) # width:1044 height:1 _=1
if len(y)==0:
continue
boxes = np.array(y[:,:4],dtype=np.float32)
boxes[:,0] = boxes[:,0]/width
boxes[:,1] = boxes[:,1]/height
boxes[:,2] = boxes[:,2]/width
boxes[:,3] = boxes[:,3]/height
# box_heights = boxes[:,3] - boxes[:,1]
# box_widths = boxes[:,2] - boxes[:,0]
# if (box_heights<=0).any() or (box_widths<=0).any():
# continue
y[:,:4] = boxes[:,:4]
anchors = get_anchors((66,1),1044,1)
# 计算真实框对应的先验框，与这个先验框应当有的预测结果
assignment = self.bbox_util.assign_boxes(y,anchors)
num_regions = 16
classification = assignment[:,4]
regression = assignment[:,:]
mask_pos = classification[:]>0
num_pos = len(classification[mask_pos])
if num_pos > num_regions/2:
val_locs = random.sample(range(num_pos), int(num_pos - num_regions/2))
temp_classification = classification[mask_pos]
temp_regression = regression[mask_pos]
temp_classification[val_locs] = -1
temp_regression[val_locs,-1] = -1
classification[mask_pos] = temp_classification
regression[mask_pos] = temp_regression
mask_neg = classification[:]==0
num_neg = len(classification[mask_neg])
mask_pos = classification[:]>0
num_pos = len(classification[mask_pos])
if len(classification[mask_neg]) + num_pos > num_regions:
val_locs = random.sample(range(num_neg), int(num_neg + num_pos - num_regions))
temp_classification = classification[mask_neg]
temp_classification[val_locs] = -1
classification[mask_neg] = temp_classification
classification = np.reshape(classification,[-1,1])
regression = np.reshape(regression,[-1,5])
tmp_inp = np.array(raman)
tmp_inp = (tmp_inp - (np.min(tmp_inp)))/(np.max(tmp_inp) - np.min(tmp_inp))
tmp_targets = [np.expand_dims(np.array(classification,dtype=np.float32),0),np.expand_dims(np.array(regression,dtype=np.float32),0)]
yield np.expand_dims(tmp_inp,0), tmp_targets, np.expand_dims(y,0)
train_annotation_path = '2007_train.txt'
val_annotation_path = '2007_val.txt'
#------------------------------------------------------#
# 设置用到的显卡
#------------------------------------------------------#
os.environ["CUDA_VISIBLE_DEVICES"] = ','.join(str(x) for x in train_gpu)
ngpus_per_node = len(train_gpu)
print('Number of devices: {}'.format(ngpus_per_node))
#----------------------------------------------------#
# 获取classes和anchor
#----------------------------------------------------#
class_names, num_classes = get_classes(classes_path)
num_classes += 1
anchors = get_anchors(input_shape, anchors_size)
K.clear_session()
model_body = m2det((input_shape[0], input_shape[1], 3), num_classes)
if model_path != '':
#------------------------------------------------------#
# 载入预训练权重
#------------------------------------------------------#
print('Load weights {}.'.format(model_path))
model_body.load_weights(model_path, by_name=True, skip_mismatch=True)
if ngpus_per_node > 1:
model = multi_gpu_model(model_body, gpus=ngpus_per_node)
else:
model = model_body
import numpy as np
import keras
from keras.optimizers import Adam
from nets.retinanet_training import Generator
from nets.retinanet_training import focal, smooth_l1
from keras.callbacks import TensorBoard, ModelCheckpoint, ReduceLROnPlateau, EarlyStopping
from utils.utils import BBoxUtility
from utils.anchors import get_anchors
if __name__ == "__main__":
NUM_CLASSES = 20
input_shape = (600, 600, 3)
annotation_path = '2007_train.txt'
inputs = keras.layers.Input(shape=input_shape)
model = retinanet.resnet_retinanet(NUM_CLASSES, inputs)
priors = get_anchors(model)
bbox_util = BBoxUtility(NUM_CLASSES, priors)
#-------------------------------------------#
# 权值文件的下载请看README
#-------------------------------------------#
model.load_weights("model_data/resnet50_coco_best_v2.1.0.h5",
by_name=True,
skip_mismatch=True)
# 0.1用于验证，0.9用于训练
val_split = 0.1
with open(annotation_path) as f:
lines = f.readlines()
np.random.seed(10101)
np.random.shuffle(lines)
def get_map_txt(self, image_id, image, class_names, map_out_path):
f = open(
os.path.join(map_out_path,
"detection-results/" + image_id + ".txt"), "w")
#---------------------------------------------------#
# 计算输入图片的高和宽
#---------------------------------------------------#
image_shape = np.array(np.shape(image)[0:2])
input_shape = get_new_img_size(image_shape[0], image_shape[1])
#---------------------------------------------------------#
# 在这里将图像转换成RGB图像，防止灰度图在预测时报错。
# 代码仅仅支持RGB图像的预测，所有其它类型的图像都会转化成RGB
#---------------------------------------------------------#
image = cvtColor(image)
#---------------------------------------------------------#
# 给原图像进行resize，resize到短边为600的大小上
#---------------------------------------------------------#
image_data = resize_image(image, [input_shape[1], input_shape[0]])
#---------------------------------------------------------#
# 添加上batch_size维度
#---------------------------------------------------------#
image_data = np.expand_dims(
preprocess_input(np.array(image_data, dtype='float32')), 0)
#---------------------------------------------------------#
# 获得rpn网络预测结果和base_layer
#---------------------------------------------------------#
rpn_pred = self.model_rpn(image_data)
rpn_pred = [x.numpy() for x in rpn_pred]
#---------------------------------------------------------#
# 生成先验框并解码
#---------------------------------------------------------#
anchors = get_anchors(input_shape, self.backbone, self.anchors_size)
rpn_results = self.bbox_util.detection_out_rpn(rpn_pred, anchors)
#-------------------------------------------------------------#
# 利用建议框获得classifier网络预测结果
#-------------------------------------------------------------#
classifier_pred = self.model_classifier(
[rpn_pred[2], rpn_results[:, :, [1, 0, 3, 2]]])
classifier_pred = [x.numpy() for x in classifier_pred]
#-------------------------------------------------------------#
# 利用classifier的预测结果对建议框进行解码，获得预测框
#-------------------------------------------------------------#
results = self.bbox_util.detection_out_classifier(
classifier_pred, rpn_results, image_shape, input_shape,
self.confidence)
#--------------------------------------#
# 如果没有检测到物体，则返回原图
#--------------------------------------#
if len(results[0]) <= 0:
return
top_label = np.array(results[0][:, 5], dtype='int32')
top_conf = results[0][:, 4]
top_boxes = results[0][:, :4]
for i, c in list(enumerate(top_label)):
predicted_class = self.class_names[int(c)]
box = top_boxes[i]
score = str(top_conf[i])
top, left, bottom, right = box
if predicted_class not in class_names:
continue
f.write("%s %s %s %s %s %s\n" %
(predicted_class, score[:6], str(int(left)), str(
int(top)), str(int(right)), str(int(bottom))))
f.close()
return
import numpy as np
import pickle
import tensorflow as tf
import cv2
import keras
import os
import sys
if __name__ == "__main__":
log_dir = "logs/"
annotation_path = '2007_train.txt'
NUM_CLASSES = 21
input_shape = (300, 300, 3)
priors = get_anchors()
bbox_util = BBoxUtility(NUM_CLASSES, priors)
# 0.1用于验证，0.9用于训练
val_split = 0.1
with open(annotation_path) as f:
lines = f.readlines()
np.random.seed(10101)
np.random.shuffle(lines)
np.random.seed(None)
num_val = int(len(lines)*val_split)
num_train = len(lines) - num_val
model = rfb300(input_shape, num_classes=NUM_CLASSES)
model.load_weights("model_data/rfb_weights.h5", by_name=True, skip_mismatch=True)
# 训练参数设置
def detect_image(self, image):
image_shape = np.array(np.shape(image)[0:2])
old_width = image_shape[1]
old_height = image_shape[0]
old_image = copy.deepcopy(image)
width, height = get_new_img_size(old_width, old_height)
image = image.resize([width, height])
photo = np.array(image, dtype=np.float64)
# 图片预处理，归一化
photo = preprocess_input(np.expand_dims(photo, 0))
preds = self.model_rpn.predict(photo)
# 将预测结果进行解码
anchors = get_anchors(self.get_img_output_length(width, height), width,
height)
rpn_results = self.bbox_util.detection_out(preds,
anchors,
1,
confidence_threshold=0)
R = rpn_results[0][:, 2:]
R[:, 0] = np.array(np.round(R[:, 0] * width / self.config.rpn_stride),
dtype=np.int32)
R[:, 1] = np.array(np.round(R[:, 1] * height / self.config.rpn_stride),
dtype=np.int32)
R[:, 2] = np.array(np.round(R[:, 2] * width / self.config.rpn_stride),
dtype=np.int32)
R[:, 3] = np.array(np.round(R[:, 3] * height / self.config.rpn_stride),
dtype=np.int32)
R[:, 2] -= R[:, 0]
R[:, 3] -= R[:, 1]
base_layer = preds[2]
delete_line = []
for i, r in enumerate(R):
if r[2] < 1 or r[3] < 1:
delete_line.append(i)
R = np.delete(R, delete_line, axis=0)
bboxes = []
probs = []
labels = []
for jk in range(R.shape[0] // self.config.num_rois + 1):
ROIs = np.expand_dims(R[self.config.num_rois *
jk:self.config.num_rois * (jk + 1), :],
axis=0)
if ROIs.shape[1] == 0:
break
if jk == R.shape[0] // self.config.num_rois:
#pad R
curr_shape = ROIs.shape
target_shape = (curr_shape[0], self.config.num_rois,
curr_shape[2])
ROIs_padded = np.zeros(target_shape).astype(ROIs.dtype)
ROIs_padded[:, :curr_shape[1], :] = ROIs
ROIs_padded[0, curr_shape[1]:, :] = ROIs[0, 0, :]
ROIs = ROIs_padded
[P_cls, P_regr] = self.model_classifier.predict([base_layer, ROIs])
for ii in range(P_cls.shape[1]):
if np.max(P_cls[0, ii, :-1]) < self.confidence:
continue
label = np.argmax(P_cls[0, ii, :-1])
(x, y, w, h) = ROIs[0, ii, :]
cls_num = np.argmax(P_cls[0, ii, :-1])
(tx, ty, tw, th) = P_regr[0, ii, 4 * cls_num:4 * (cls_num + 1)]
tx /= self.config.classifier_regr_std[0]
ty /= self.config.classifier_regr_std[1]
tw /= self.config.classifier_regr_std[2]
th /= self.config.classifier_regr_std[3]
cx = x + w / 2.
cy = y + h / 2.
cx1 = tx * w + cx
cy1 = ty * h + cy
w1 = math.exp(tw) * w
h1 = math.exp(th) * h
x1 = cx1 - w1 / 2.
y1 = cy1 - h1 / 2.
x2 = cx1 + w1 / 2
y2 = cy1 + h1 / 2
x1 = int(round(x1))
y1 = int(round(y1))
x2 = int(round(x2))
y2 = int(round(y2))
bboxes.append([x1, y1, x2, y2])
probs.append(np.max(P_cls[0, ii, :-1]))
labels.append(label)
if len(bboxes) == 0:
return old_image
# 筛选出其中得分高于confidence的框
labels = np.array(labels)
probs = np.array(probs)
boxes = np.array(bboxes, dtype=np.float32)
boxes[:, 0] = boxes[:, 0] * self.config.rpn_stride / width
boxes[:, 1] = boxes[:, 1] * self.config.rpn_stride / height
boxes[:, 2] = boxes[:, 2] * self.config.rpn_stride / width
boxes[:, 3] = boxes[:, 3] * self.config.rpn_stride / height
results = np.array(
self.bbox_util.nms_for_out(np.array(labels), np.array(probs),
np.array(boxes), self.num_classes - 1,
0.4))
top_label_indices = results[:, 0]
top_conf = results[:, 1]
boxes = results[:, 2:]
boxes[:, 0] = boxes[:, 0] * old_width
boxes[:, 1] = boxes[:, 1] * old_height
boxes[:, 2] = boxes[:, 2] * old_width
boxes[:, 3] = boxes[:, 3] * old_height
font = ImageFont.truetype(font='model_data/simhei.ttf',
size=np.floor(3e-2 * np.shape(image)[1] +
0.5).astype('int32'))
thickness = (np.shape(old_image)[0] +
np.shape(old_image)[1]) // old_width * 2
image = old_image
for i, c in enumerate(top_label_indices):
predicted_class = self.class_names[int(c)]
score = top_conf[i]
left, top, right, bottom = boxes[i]
top = top - 5
left = left - 5
bottom = bottom + 5
right = right + 5
top = max(0, np.floor(top + 0.5).astype('int32'))
left = max(0, np.floor(left + 0.5).astype('int32'))
bottom = min(
np.shape(image)[0],
np.floor(bottom + 0.5).astype('int32'))
right = min(
np.shape(image)[1],
np.floor(right + 0.5).astype('int32'))
# 画框框
label = '{} {:.2f}'.format(predicted_class, score)
draw = ImageDraw.Draw(image)
label_size = draw.textsize(label, font)
label = label.encode('utf-8')
print(label)
if top - label_size[1] >= 0:
text_origin = np.array([left, top - label_size[1]])
else:
text_origin = np.array([left, top + 1])
for i in range(thickness):
draw.rectangle([left + i, top + i, right - i, bottom - i],
outline=self.colors[int(c)])
draw.rectangle(
[tuple(text_origin),
tuple(text_origin + label_size)],
fill=self.colors[int(c)])
draw.text(text_origin,
str(label, 'UTF-8'),
fill=(0, 0, 0),
font=font)
del draw
return image
def _get_prior(self):
data = get_anchors(self.retinanet_model)
return data
def detect_image(self, image_id, image):
self.confidence = 0.05
f = open("./input/detection-results/" + image_id + ".txt", "w")
image_shape = np.array(np.shape(image)[0:2])
old_width = image_shape[1]
old_height = image_shape[0]
old_image = copy.deepcopy(image)
width, height = get_new_img_size(old_width, old_height)
image = image.resize([width, height])
photo = np.array(image, dtype=np.float64)
# 图片预处理，归一化
photo = preprocess_input(np.expand_dims(photo, 0))
preds = self.model_rpn.predict(photo)
# 将预测结果进行解码
anchors = get_anchors(self.get_img_output_length(width, height), width,
height)
rpn_results = self.bbox_util.detection_out(preds,
anchors,
1,
confidence_threshold=0)
R = rpn_results[0][:, 2:]
R[:, 0] = np.array(np.round(R[:, 0] * width / self.config.rpn_stride),
dtype=np.int32)
R[:, 1] = np.array(np.round(R[:, 1] * height / self.config.rpn_stride),
dtype=np.int32)
R[:, 2] = np.array(np.round(R[:, 2] * width / self.config.rpn_stride),
dtype=np.int32)
R[:, 3] = np.array(np.round(R[:, 3] * height / self.config.rpn_stride),
dtype=np.int32)
R[:, 2] -= R[:, 0]
R[:, 3] -= R[:, 1]
base_layer = preds[2]
delete_line = []
for i, r in enumerate(R):
if r[2] < 1 or r[3] < 1:
delete_line.append(i)
R = np.delete(R, delete_line, axis=0)
bboxes = []
probs = []
labels = []
for jk in range(R.shape[0] // self.config.num_rois + 1):
ROIs = np.expand_dims(R[self.config.num_rois *
jk:self.config.num_rois * (jk + 1), :],
axis=0)
if ROIs.shape[1] == 0:
break
if jk == R.shape[0] // self.config.num_rois:
#pad R
curr_shape = ROIs.shape
target_shape = (curr_shape[0], self.config.num_rois,
curr_shape[2])
ROIs_padded = np.zeros(target_shape).astype(ROIs.dtype)
ROIs_padded[:, :curr_shape[1], :] = ROIs
ROIs_padded[0, curr_shape[1]:, :] = ROIs[0, 0, :]
ROIs = ROIs_padded
[P_cls, P_regr] = self.model_classifier.predict([base_layer, ROIs])
for ii in range(P_cls.shape[1]):
if np.max(P_cls[0, ii, :]) < self.confidence or np.argmax(
P_cls[0, ii, :]) == (P_cls.shape[2] - 1):
continue
label = np.argmax(P_cls[0, ii, :])
(x, y, w, h) = ROIs[0, ii, :]
cls_num = np.argmax(P_cls[0, ii, :])
(tx, ty, tw, th) = P_regr[0, ii, 4 * cls_num:4 * (cls_num + 1)]
tx /= self.config.classifier_regr_std[0]
ty /= self.config.classifier_regr_std[1]
tw /= self.config.classifier_regr_std[2]
th /= self.config.classifier_regr_std[3]
cx = x + w / 2.
cy = y + h / 2.
cx1 = tx * w + cx
cy1 = ty * h + cy
w1 = math.exp(tw) * w
h1 = math.exp(th) * h
x1 = cx1 - w1 / 2.
y1 = cy1 - h1 / 2.
x2 = cx1 + w1 / 2
y2 = cy1 + h1 / 2
x1 = int(round(x1))
y1 = int(round(y1))
x2 = int(round(x2))
y2 = int(round(y2))
bboxes.append([x1, y1, x2, y2])
probs.append(np.max(P_cls[0, ii, :]))
labels.append(label)
if len(bboxes) == 0:
return old_image
# 筛选出其中得分高于confidence的框
labels = np.array(labels)
probs = np.array(probs)
boxes = np.array(bboxes, dtype=np.float32)
boxes[:, 0] = boxes[:, 0] * self.config.rpn_stride / width
boxes[:, 1] = boxes[:, 1] * self.config.rpn_stride / height
boxes[:, 2] = boxes[:, 2] * self.config.rpn_stride / width
boxes[:, 3] = boxes[:, 3] * self.config.rpn_stride / height
results = np.array(
self.bbox_util.nms_for_out(np.array(labels), np.array(probs),
np.array(boxes), self.num_classes - 1,
0.4))
top_label_indices = results[:, 0]
top_conf = results[:, 1]
boxes = results[:, 2:]
boxes[:, 0] = boxes[:, 0] * old_width
boxes[:, 1] = boxes[:, 1] * old_height
boxes[:, 2] = boxes[:, 2] * old_width
boxes[:, 3] = boxes[:, 3] * old_height
for i, c in enumerate(top_label_indices):
predicted_class = self.class_names[int(c)]
score = str(top_conf[i])
left, top, right, bottom = boxes[i]
f.write("%s %s %s %s %s %s\n" %
(predicted_class, score[:6], str(int(left)), str(
int(top)), str(int(right)), str(int(bottom))))
f.close()
return
print('Epoch {}/{}'.format(i + 1, EPOCH))
for iteration, batch in enumerate(rpn_train):
if len(rpn_accuracy_rpn_monitor) == EPOCH_LENGTH and config.verbose:
mean_overlapping_bboxes = float(sum(rpn_accuracy_rpn_monitor))/len(rpn_accuracy_rpn_monitor)
rpn_accuracy_rpn_monitor = []
print('Average number of overlapping bounding boxes from RPN = {} for {} previous iterations'.format(mean_overlapping_bboxes, EPOCH_LENGTH))
if mean_overlapping_bboxes == 0:
print('RPN is not producing bounding boxes that overlap the ground truth boxes. Check RPN settings or keep training.')
X, Y, boxes = batch[0],batch[1],batch[2]
loss_rpn = model_rpn.train_on_batch(X,Y)
write_log(callback, ['rpn_cls_loss', 'rpn_reg_loss'], loss_rpn, train_step)
P_rpn = model_rpn.predict_on_batch(X)
width,height,_ = np.shape(X[0])
anchors = get_anchors((66,1),width,height)
# 将预测结果进行解码
P_rpn[1][...,3] = 1
anchors[:,1] = 0
results = bbox_util.detection_out(P_rpn,anchors,1, confidence_threshold=0)
R = results[0][:, 2:]
X2, Y1, Y2, IouS = calc_iou(R, config, boxes[0], width, height, NUM_CLASSES)
if X2 is None:
rpn_accuracy_rpn_monitor.append(0)
rpn_accuracy_for_epoch.append(0)
continue
def get_train_model(config):
h, w = config.IMAGE_SHAPE[:2]
if h / 2**6 != int(h / 2**6) or w / 2**6 != int(w / 2**6):
raise Exception("Image size must be dividable by 2 at least 6 times "
"to avoid fractions when downscaling and upscaling."
"For example, use 256, 320, 384, 448, 512, ... etc. ")
# 输入进来的图片必须是2的6次方以上的倍数
input_image = Input(shape=[None, None, config.IMAGE_SHAPE[2]],
name="input_image")
# meta包含了一些必要信息
input_image_meta = Input(shape=[config.IMAGE_META_SIZE],
name="input_image_meta")
# RPN建议框网络的真实框信息
input_rpn_match = Input(shape=[None, 1],
name="input_rpn_match",
dtype=tf.int32)
input_rpn_bbox = Input(shape=[None, 4],
name="input_rpn_bbox",
dtype=tf.float32)
# 种类信息
input_gt_class_ids = Input(shape=[None],
name="input_gt_class_ids",
dtype=tf.int32)
# 框的位置信息
input_gt_boxes = Input(shape=[None, 4],
name="input_gt_boxes",
dtype=tf.float32)
# 标准化到0-1之间
gt_boxes = Lambda(lambda x: norm_boxes_graph(x,
K.shape(input_image)[1:3]))(
input_gt_boxes)
# mask语义分析信息
# [batch, height, width, MAX_GT_INSTANCES]
if config.USE_MINI_MASK:
input_gt_masks = Input(
shape=[config.MINI_MASK_SHAPE[0], config.MINI_MASK_SHAPE[1], None],
name="input_gt_masks",
dtype=bool)
else:
input_gt_masks = Input(
shape=[config.IMAGE_SHAPE[0], config.IMAGE_SHAPE[1], None],
name="input_gt_masks",
dtype=bool)
# 获得Resnet里的压缩程度不同的一些层
_, C2, C3, C4, C5 = get_resnet(input_image,
stage5=True,
train_bn=config.TRAIN_BN)
# 组合成特征金字塔的结构
# P5长宽共压缩了5次
# Height/32,Width/32,256
P5 = Conv2D(config.TOP_DOWN_PYRAMID_SIZE, (1, 1), name='fpn_c5p5')(C5)
# P4长宽共压缩了4次
# Height/16,Width/16,256
P4 = Add(name="fpn_p4add")([
UpSampling2D(size=(2, 2), name="fpn_p5upsampled")(P5),
Conv2D(config.TOP_DOWN_PYRAMID_SIZE, (1, 1), name='fpn_c4p4')(C4)
])
# P4长宽共压缩了3次
# Height/8,Width/8,256
P3 = Add(name="fpn_p3add")([
UpSampling2D(size=(2, 2), name="fpn_p4upsampled")(P4),
Conv2D(config.TOP_DOWN_PYRAMID_SIZE, (1, 1), name='fpn_c3p3')(C3)
])
# P4长宽共压缩了2次
# Height/4,Width/4,256
P2 = Add(name="fpn_p2add")([
UpSampling2D(size=(2, 2), name="fpn_p3upsampled")(P3),
Conv2D(config.TOP_DOWN_PYRAMID_SIZE, (1, 1), name='fpn_c2p2')(C2)
])
# 各自进行一次256通道的卷积，此时P2、P3、P4、P5通道数相同
# Height/4,Width/4,256
P2 = Conv2D(config.TOP_DOWN_PYRAMID_SIZE, (3, 3),
padding="SAME",
name="fpn_p2")(P2)
# Height/8,Width/8,256
P3 = Conv2D(config.TOP_DOWN_PYRAMID_SIZE, (3, 3),
padding="SAME",
name="fpn_p3")(P3)
# Height/16,Width/16,256
P4 = Conv2D(config.TOP_DOWN_PYRAMID_SIZE, (3, 3),
padding="SAME",
name="fpn_p4")(P4)
# Height/32,Width/32,256
P5 = Conv2D(config.TOP_DOWN_PYRAMID_SIZE, (3, 3),
padding="SAME",
name="fpn_p5")(P5)
# 在建议框网络里面还有一个P6用于获取建议框
# Height/64,Width/64,256
P6 = MaxPooling2D(pool_size=(1, 1), strides=2, name="fpn_p6")(P5)
# P2, P3, P4, P5, P6可以用于获取建议框
rpn_feature_maps = [P2, P3, P4, P5, P6]
# P2, P3, P4, P5用于获取mask信息
mrcnn_feature_maps = [P2, P3, P4, P5]
anchors = get_anchors(config, config.IMAGE_SHAPE)
# 拓展anchors的shape，第一个维度拓展为batch_size
anchors = np.broadcast_to(anchors, (config.BATCH_SIZE, ) + anchors.shape)
# 将anchors转化成tensor的形式
anchors = Lambda(lambda x: tf.Variable(anchors),
name="anchors")(input_image)
# 建立RPN模型
rpn = build_rpn_model(len(config.RPN_ANCHOR_RATIOS),
config.TOP_DOWN_PYRAMID_SIZE)
rpn_class_logits, rpn_class, rpn_bbox = [], [], []
# 获得RPN网络的预测结果，进行格式调整，把五个特征层的结果进行堆叠
for p in rpn_feature_maps:
logits, classes, bbox = rpn([p])
rpn_class_logits.append(logits)
rpn_class.append(classes)
rpn_bbox.append(bbox)
rpn_class_logits = Concatenate(axis=1,
name="rpn_class_logits")(rpn_class_logits)
rpn_class = Concatenate(axis=1, name="rpn_class")(rpn_class)
rpn_bbox = Concatenate(axis=1, name="rpn_bbox")(rpn_bbox)
# 此时获得的rpn_class_logits、rpn_class、rpn_bbox的维度是
# rpn_class_logits : Batch_size, num_anchors, 2
# rpn_class : Batch_size, num_anchors, 2
# rpn_bbox : Batch_size, num_anchors, 4
proposal_count = config.POST_NMS_ROIS_TRAINING
# Batch_size, proposal_count, 4
rpn_rois = ProposalLayer(proposal_count=proposal_count,
nms_threshold=config.RPN_NMS_THRESHOLD,
name="ROI",
config=config)([rpn_class, rpn_bbox, anchors])
active_class_ids = Lambda(lambda x: parse_image_meta_graph(x)[
"active_class_ids"])(input_image_meta)
if not config.USE_RPN_ROIS:
# 使用外部输入的建议框
input_rois = Input(shape=[config.POST_NMS_ROIS_TRAINING, 4],
name="input_roi",
dtype=np.int32)
# Normalize coordinates
target_rois = Lambda(
lambda x: norm_boxes_graph(x,
K.shape(input_image)[1:3]))(input_rois)
else:
# 利用预测到的建议框进行下一步的操作
target_rois = rpn_rois
"""找到建议框的ground_truth
Inputs:
proposals: [batch, N, (y1, x1, y2, x2)]建议框
gt_class_ids: [batch, MAX_GT_INSTANCES]每个真实框对应的类
gt_boxes: [batch, MAX_GT_INSTANCES, (y1, x1, y2, x2)]真实框的位置
gt_masks: [batch, height, width, MAX_GT_INSTANCES]真实框的语义分割情况
Returns:
rois: [batch, TRAIN_ROIS_PER_IMAGE, (y1, x1, y2, x2)]内部真实存在目标的建议框
target_class_ids: [batch, TRAIN_ROIS_PER_IMAGE]每个建议框对应的类
target_deltas: [batch, TRAIN_ROIS_PER_IMAGE, (dy, dx, log(dh), log(dw)]每个建议框应该有的调整参数
target_mask: [batch, TRAIN_ROIS_PER_IMAGE, height, width]每个建议框语义分割情况
"""
rois, target_class_ids, target_bbox, target_mask =\
DetectionTargetLayer(config, name="proposal_targets")([
target_rois, input_gt_class_ids, gt_boxes, input_gt_masks])
# 找到合适的建议框的classifier预测结果
mrcnn_class_logits, mrcnn_class, mrcnn_bbox =\
fpn_classifier_graph(rois, mrcnn_feature_maps, input_image_meta,
config.POOL_SIZE, config.NUM_CLASSES,
train_bn=config.TRAIN_BN,
fc_layers_size=config.FPN_CLASSIF_FC_LAYERS_SIZE)
# 找到合适的建议框的mask预测结果
mrcnn_mask = build_fpn_mask_graph(rois,
mrcnn_feature_maps,
input_image_meta,
config.MASK_POOL_SIZE,
config.NUM_CLASSES,
train_bn=config.TRAIN_BN)
output_rois = Lambda(lambda x: x * 1, name="output_rois")(rois)
# Losses
rpn_class_loss = Lambda(lambda x: rpn_class_loss_graph(*x),
name="rpn_class_loss")(
[input_rpn_match, rpn_class_logits])
rpn_bbox_loss = Lambda(lambda x: rpn_bbox_loss_graph(config, *x),
name="rpn_bbox_loss")(
[input_rpn_bbox, input_rpn_match, rpn_bbox])
class_loss = Lambda(lambda x: mrcnn_class_loss_graph(*x),
name="mrcnn_class_loss")([
target_class_ids, mrcnn_class_logits,
active_class_ids
])
bbox_loss = Lambda(lambda x: mrcnn_bbox_loss_graph(*x),
name="mrcnn_bbox_loss")(
[target_bbox, target_class_ids, mrcnn_bbox])
mask_loss = Lambda(lambda x: mrcnn_mask_loss_graph(*x),
name="mrcnn_mask_loss")(
[target_mask, target_class_ids, mrcnn_mask])
# Model
inputs = [
input_image, input_image_meta, input_rpn_match, input_rpn_bbox,
input_gt_class_ids, input_gt_boxes, input_gt_masks
]
if not config.USE_RPN_ROIS:
inputs.append(input_rois)
outputs = [
rpn_class_logits, rpn_class, rpn_bbox, mrcnn_class_logits, mrcnn_class,
mrcnn_bbox, mrcnn_mask, rpn_rois, output_rois, rpn_class_loss,
rpn_bbox_loss, class_loss, bbox_loss, mask_loss
]
model = Model(inputs, outputs, name='mask_rcnn')
return model
def detect_image(self, image):
#-------------------------------------#
# 转换成RGB图片，可以用于灰度图预测。
#-------------------------------------#
image = image.convert("RGB")
image_shape = np.array(np.shape(image)[0:2])
old_width, old_height = image_shape[1], image_shape[0]
old_image = copy.deepcopy(image)
#---------------------------------------------------------#
# 给原图像进行resize，resize到短边为600的大小上
#---------------------------------------------------------#
width, height = get_new_img_size(old_width, old_height)
image = image.resize([width, height], Image.BICUBIC)
photo = np.array(image, dtype=np.float64)
#-----------------------------------------------------------#
# 图片预处理，归一化。
#-----------------------------------------------------------#
photo = preprocess_input(np.expand_dims(photo, 0))
rpn_pred = self.model_rpn_get_pred(photo)
rpn_pred = [x.numpy() for x in rpn_pred]
#-----------------------------------------------------------#
# 将建议框网络的预测结果进行解码
#-----------------------------------------------------------#
base_feature_width, base_feature_height = self.get_img_output_length(
width, height)
anchors = get_anchors([base_feature_width, base_feature_height], width,
height)
rpn_results = self.bbox_util.detection_out_rpn(rpn_pred, anchors)
#-------------------------------------------------------------#
# 在获得建议框和共享特征层后，将二者传入classifier中进行预测
#-------------------------------------------------------------#
base_layer = rpn_pred[2]
proposal_box = np.array(rpn_results)[:, :, 1:]
temp_ROIs = np.zeros_like(proposal_box)
temp_ROIs[:, :, [0, 1, 2, 3]] = proposal_box[:, :, [1, 0, 3, 2]]
classifier_pred = self.model_classifier_get_pred(
[base_layer, temp_ROIs])
classifier_pred = [x.numpy() for x in classifier_pred]
#-------------------------------------------------------------#
# 利用classifier的预测结果对建议框进行解码，获得预测框
#-------------------------------------------------------------#
results = self.bbox_util.detection_out_classifier(
classifier_pred, proposal_box, self.config, self.confidence)
if len(results[0]) == 0:
return old_image
results = np.array(results[0])
boxes = results[:, :4]
top_conf = results[:, 4]
top_label_indices = results[:, 5]
boxes[:, [0, 2]] = boxes[:, [0, 2]] * old_width
boxes[:, [1, 3]] = boxes[:, [1, 3]] * old_height
font = ImageFont.truetype(font='model_data/simhei.ttf',
size=np.floor(3e-2 * np.shape(image)[1] +
0.5).astype('int32'))
thickness = max(
(np.shape(old_image)[0] + np.shape(old_image)[1]) // old_width * 2,
1)
image = old_image
for i, c in enumerate(top_label_indices):
predicted_class = self.class_names[int(c)]
score = top_conf[i]
left, top, right, bottom = boxes[i]
top = top - 5
left = left - 5
bottom = bottom + 5
right = right + 5
top = max(0, np.floor(top + 0.5).astype('int32'))
left = max(0, np.floor(left + 0.5).astype('int32'))
bottom = min(
np.shape(image)[0],
np.floor(bottom + 0.5).astype('int32'))
right = min(
np.shape(image)[1],
np.floor(right + 0.5).astype('int32'))
# 画框框
label = '{} {:.2f}'.format(predicted_class, score)
draw = ImageDraw.Draw(image)
label_size = draw.textsize(label, font)
label = label.encode('utf-8')
print(label, top, left, bottom, right)
if top - label_size[1] >= 0:
text_origin = np.array([left, top - label_size[1]])
else:
text_origin = np.array([left, top + 1])
for i in range(thickness):
draw.rectangle([left + i, top + i, right - i, bottom - i],
outline=self.colors[int(c)])
draw.rectangle(
[tuple(text_origin),
tuple(text_origin + label_size)],
fill=self.colors[int(c)])
draw.text(text_origin,
str(label, 'UTF-8'),
fill=(0, 0, 0),
font=font)
del draw
return image
def fit_one_epoch(model_rpn, model_all, epoch, epoch_size, epoch_size_val, gen,
genval, Epoch, callback):
total_loss = 0
rpn_loc_loss = 0
rpn_cls_loss = 0
roi_loc_loss = 0
roi_cls_loss = 0
val_toal_loss = 0
with tqdm(total=epoch_size,
desc=f'Epoch {epoch + 1}/{Epoch}',
postfix=dict,
mininterval=0.3) as pbar:
for iteration, batch in enumerate(gen):
if iteration >= epoch_size:
break
X, Y, boxes = batch[0], batch[1], batch[2]
P_rpn = model_rpn.predict_on_batch(X)
height, width, _ = np.shape(X[0])
base_feature_width, base_feature_height = get_img_output_length(
width, height)
anchors = get_anchors([base_feature_width, base_feature_height],
width, height)
results = bbox_util.detection_out_rpn(P_rpn, anchors)
roi_inputs = []
out_classes = []
out_regrs = []
for i in range(len(X)):
R = results[i][:, 1:]
X2, Y1, Y2 = calc_iou(R, config, boxes[i], NUM_CLASSES)
roi_inputs.append(X2)
out_classes.append(Y1)
out_regrs.append(Y2)
loss_class = model_all.train_on_batch(
[X, np.array(roi_inputs)],
[Y[0], Y[1],
np.array(out_classes),
np.array(out_regrs)])
write_log(callback, [
'total_loss', 'rpn_cls_loss', 'rpn_reg_loss',
'detection_cls_loss', 'detection_reg_loss'
], loss_class, iteration)
rpn_cls_loss += loss_class[1]
rpn_loc_loss += loss_class[2]
roi_cls_loss += loss_class[3]
roi_loc_loss += loss_class[4]
total_loss = rpn_loc_loss + rpn_cls_loss + roi_loc_loss + roi_cls_loss
pbar.set_postfix(
**{
'total': total_loss / (iteration + 1),
'rpn_cls': rpn_cls_loss / (iteration + 1),
'rpn_loc': rpn_loc_loss / (iteration + 1),
'roi_cls': roi_cls_loss / (iteration + 1),
'roi_loc': roi_loc_loss / (iteration + 1),
'lr': K.get_value(model_rpn.optimizer.lr)
})
pbar.update(1)
print('Start Validation')
with tqdm(total=epoch_size_val,
desc=f'Epoch {epoch + 1}/{Epoch}',
postfix=dict,
mininterval=0.3) as pbar:
for iteration, batch in enumerate(genval):
if iteration >= epoch_size_val:
break
X, Y, boxes = batch[0], batch[1], batch[2]
P_rpn = model_rpn.predict_on_batch(X)
height, width, _ = np.shape(X[0])
base_feature_width, base_feature_height = get_img_output_length(
width, height)
anchors = get_anchors([base_feature_width, base_feature_height],
width, height)
results = bbox_util.detection_out_rpn(P_rpn, anchors)
roi_inputs = []
out_classes = []
out_regrs = []
for i in range(len(X)):
R = results[i][:, 1:]
X2, Y1, Y2 = calc_iou(R, config, boxes[i], NUM_CLASSES)
roi_inputs.append(X2)
out_classes.append(Y1)
out_regrs.append(Y2)
loss_class = model_all.test_on_batch(
[X, np.array(roi_inputs)],
[Y[0], Y[1],
np.array(out_classes),
np.array(out_regrs)])
val_toal_loss += loss_class[0]
pbar.set_postfix(**{'total': val_toal_loss / (iteration + 1)})
pbar.update(1)
loss_history.append_loss(total_loss / (epoch_size + 1),
val_toal_loss / (epoch_size_val + 1))
print('Finish Validation')
print('Epoch:' + str(epoch + 1) + '/' + str(Epoch))
print('Total Loss: %.4f || Val Loss: %.4f ' %
(total_loss / (epoch_size + 1), val_toal_loss /
(epoch_size_val + 1)))
print('Saving state, iter:', str(epoch + 1))
model_all.save_weights('logs/Epoch%d-Total_Loss%.4f-Val_Loss%.4f.h5' %
((epoch + 1), total_loss /
(epoch_size + 1), val_toal_loss /
(epoch_size_val + 1)))
return
def generate(self):
while True:
shuffle(self.train_lines)
lines = self.train_lines
inputs = []
target0 = []
target1 = []
target2 = []
for annotation_line in lines:
img, y = self.get_random_data(annotation_line)
height, width, _ = np.shape(img)
if len(y) > 0:
boxes = np.array(y[:, :4], dtype=np.float32)
boxes[:, 0] = boxes[:, 0] / width
boxes[:, 1] = boxes[:, 1] / height
boxes[:, 2] = boxes[:, 2] / width
boxes[:, 3] = boxes[:, 3] / height
y[:, :4] = boxes[:, :4]
anchors = get_anchors(get_img_output_length(width, height),
width, height)
#---------------------------------------------------#
# assignment分为2个部分，它的shape为 :, 5
# :, :4 的内容为网络应该有的回归预测结果
# :, 4 的内容为先验框是否包含物体，默认为背景
#---------------------------------------------------#
assignment = self.bbox_util.assign_boxes(y, anchors)
classification = assignment[:, 4]
regression = assignment[:, :]
#---------------------------------------------------#
# 对正样本与负样本进行筛选，训练样本总和为256
#---------------------------------------------------#
mask_pos = classification[:] > 0
num_pos = len(classification[mask_pos])
if num_pos > self.num_regions / 2:
val_locs = random.sample(
range(num_pos), int(num_pos - self.num_regions / 2))
temp_classification = classification[mask_pos]
temp_regression = regression[mask_pos]
temp_classification[val_locs] = -1
temp_regression[val_locs, -1] = -1
classification[mask_pos] = temp_classification
regression[mask_pos] = temp_regression
mask_neg = classification[:] == 0
num_neg = len(classification[mask_neg])
mask_pos = classification[:] > 0
num_pos = len(classification[mask_pos])
if len(classification[mask_neg]) + num_pos > self.num_regions:
val_locs = random.sample(
range(num_neg),
int(num_neg + num_pos - self.num_regions))
temp_classification = classification[mask_neg]
temp_classification[val_locs] = -1
classification[mask_neg] = temp_classification
inputs.append(np.array(img))
target0.append(np.reshape(classification, [-1, 1]))
target1.append(np.reshape(regression, [-1, 5]))
target2.append(y)
if len(inputs) == self.Batch_size:
tmp_inp = np.array(inputs)
tmp_targets = [
np.array(target0, np.float32),
np.array(target1, np.float32)
]
tmp_y = target2
yield preprocess_input(tmp_inp), tmp_targets, tmp_y
inputs = []
target0 = []
target1 = []
target2 = []
def _get_prior(self):
data = get_anchors(image_sizes[self.phi])
return data
# 训练前，请指定好phi和model_path
# 二者所使用Efficientdet版本要相同
#-------------------------------------------#
phi = 0
annotation_path = '2007_train.txt'
classes_path = 'model_data/new_classes.txt'
class_names = get_classes(classes_path)
NUM_CLASSES = len(class_names)
#-------------------------------------------#
# 权值文件的下载请看README
#-------------------------------------------#
model_path = "model_data/efficientdet-d0-voc.h5"
model = Efficientdet(phi, num_classes=NUM_CLASSES)
priors = get_anchors(image_sizes[phi])
bbox_util = BBoxUtility(NUM_CLASSES, priors)
model.load_weights(model_path, by_name=True, skip_mismatch=True)
# 0.1用于验证，0.9用于训练
val_split = 0.1
with open(annotation_path) as f:
lines = f.readlines()
np.random.seed(10101)
np.random.shuffle(lines)
np.random.seed(None)
num_val = int(len(lines) * val_split)
num_train = len(lines) - num_val
# 训练参数设置
def detect_image(self, image):
image_shape = np.array(np.shape(image)[0:2])
#---------------------------------------------------------#
# 在这里将图像转换成RGB图像，防止灰度图在预测时报错。
# 代码仅仅支持RGB图像的预测，所有其它类型的图像都会转化成RGB
#---------------------------------------------------------#
image = cvtColor(image)
image_origin = np.array(image, np.uint8)
#---------------------------------------------------------#
# 给图像增加灰条，实现不失真的resize
# 也可以直接resize进行识别
#---------------------------------------------------------#
image_data, image_metas, windows = resize_image([np.array(image)],
self.config)
#---------------------------------------------------------#
# 根据当前输入图像的大小，生成先验框
#---------------------------------------------------------#
anchors = np.expand_dims(get_anchors(self.config, image_data[0].shape),
0)
#---------------------------------------------------------#
# 将图像输入网络当中进行预测！
#---------------------------------------------------------#
detections, _, _, mrcnn_mask, _, _, _ = self.model.predict(
[image_data, image_metas, anchors], verbose=0)
#---------------------------------------------------#
# 上面获得的预测结果是相对于padding后的图片的
# 我们需要将预测结果转换到原图上
#---------------------------------------------------#
box_thre, class_thre, class_ids, masks_arg, masks_sigmoid = postprocess(
detections[0], mrcnn_mask[0], image_shape, image_data[0].shape,
windows[0])
if box_thre is None:
return image
#----------------------------------------------------------------------#
# masks_class [image_shape[0], image_shape[1]]
# 根据每个像素点所属的实例和是否满足门限需求，判断每个像素点的种类
#----------------------------------------------------------------------#
masks_class = masks_sigmoid * (class_ids[None, None, :] + 1)
masks_class = np.reshape(masks_class,
[-1, np.shape(masks_sigmoid)[-1]])
masks_class = np.reshape(
masks_class[np.arange(np.shape(masks_class)[0]),
np.reshape(masks_arg, [-1])],
[image_shape[0], image_shape[1]])
#---------------------------------------------------------#
# 设置字体与边框厚度
#---------------------------------------------------------#
scale = 0.6
thickness = int(
max((image.size[0] + image.size[1]) // self.IMAGE_MAX_DIM, 1))
font = cv2.FONT_HERSHEY_DUPLEX
color_masks = self.colors[masks_class].astype('uint8')
image_fused = cv2.addWeighted(color_masks,
0.4,
image_origin,
0.6,
gamma=0)
for i in range(np.shape(class_ids)[0]):
top, left, bottom, right = np.array(box_thre[i, :], np.int32)
#---------------------------------------------------------#
# 获取颜色并绘制预测框
#---------------------------------------------------------#
color = self.colors[class_ids[i] + 1].tolist()
cv2.rectangle(image_fused, (left, top), (right, bottom), color,
thickness)
#---------------------------------------------------------#
# 获得这个框的种类并写在图片上
#---------------------------------------------------------#
class_name = self.class_names[class_ids[i]]
print(class_name, top, left, bottom, right)
text_str = f'{class_name}: {class_thre[i]:.2f}'
text_w, text_h = cv2.getTextSize(text_str, font, scale, 1)[0]
cv2.rectangle(image_fused, (left, top),
(left + text_w, top + text_h + 5), color, -1)
cv2.putText(image_fused, text_str, (left, top + 15), font, scale,
(255, 255, 255), 1, cv2.LINE_AA)
image = Image.fromarray(np.uint8(image_fused))
return image
def get_FPS(self, image, test_interval):
#-------------------------------------#
# 转换成RGB图片，可以用于灰度图预测。
#-------------------------------------#
image = image.convert("RGB")
image_shape = np.array(np.shape(image)[0:2])
old_width, old_height = image_shape[1], image_shape[0]
#---------------------------------------------------------#
# 给原图像进行resize，resize到短边为600的大小上
#---------------------------------------------------------#
width, height = get_new_img_size(old_width, old_height)
image = image.resize([width,height], Image.BICUBIC)
photo = np.array(image,dtype = np.float64)
#-----------------------------------------------------------#
# 图片预处理，归一化。
#-----------------------------------------------------------#
photo = preprocess_input(np.expand_dims(photo,0))
rpn_pred = self.model_rpn.predict(photo)
#-----------------------------------------------------------#
# 将建议框网络的预测结果进行解码
#-----------------------------------------------------------#
base_feature_width, base_feature_height = self.get_img_output_length(width, height)
anchors = get_anchors([base_feature_width, base_feature_height], width, height)
rpn_results = self.bbox_util.detection_out_rpn(rpn_pred, anchors)
#-------------------------------------------------------------#
# 在获得建议框和共享特征层后，将二者传入classifier中进行预测
#-------------------------------------------------------------#
base_layer = rpn_pred[2]
proposal_box = np.array(rpn_results)[:, :, 1:]
temp_ROIs = np.zeros_like(proposal_box)
temp_ROIs[:, :, [0, 1, 2, 3]] = proposal_box[:, :, [1, 0, 3, 2]]
classifier_pred = self.model_classifier.predict([base_layer, temp_ROIs])
#-------------------------------------------------------------#
# 利用classifier的预测结果对建议框进行解码，获得预测框
#-------------------------------------------------------------#
results = self.bbox_util.detection_out_classifier(classifier_pred, proposal_box, self.config, self.confidence)
if len(results[0])>0:
results = np.array(results[0])
boxes = results[:, :4]
top_conf = results[:, 4]
top_label_indices = results[:, 5]
boxes[:, [0, 2]] = boxes[:, [0, 2]] * old_width
boxes[:, [1, 3]] = boxes[:, [1, 3]] * old_height
t1 = time.time()
for _ in range(test_interval):
rpn_pred = self.model_rpn.predict(photo)
#-----------------------------------------------------------#
# 将建议框网络的预测结果进行解码
#-----------------------------------------------------------#
base_feature_width, base_feature_height = self.get_img_output_length(width, height)
anchors = get_anchors([base_feature_width, base_feature_height], width, height)
rpn_results = self.bbox_util.detection_out_rpn(rpn_pred, anchors)
#-------------------------------------------------------------#
# 在获得建议框和共享特征层后，将二者传入classifier中进行预测
#-------------------------------------------------------------#
base_layer = rpn_pred[2]
proposal_box = np.array(rpn_results)[:, :, 1:]
temp_ROIs = np.zeros_like(proposal_box)
temp_ROIs[:, :, [0, 1, 2, 3]] = proposal_box[:, :, [1, 0, 3, 2]]
classifier_pred = self.model_classifier.predict([base_layer, temp_ROIs])
#-------------------------------------------------------------#
# 利用classifier的预测结果对建议框进行解码，获得预测框
#-------------------------------------------------------------#
results = self.bbox_util.detection_out_classifier(classifier_pred, proposal_box, self.config, self.confidence)
if len(results[0])>0:
results = np.array(results[0])
boxes = results[:, :4]
top_conf = results[:, 4]
top_label_indices = results[:, 5]
boxes[:, [0, 2]] = boxes[:, [0, 2]] * old_width
boxes[:, [1, 3]] = boxes[:, [1, 3]] * old_height
t2 = time.time()
tact_time = (t2 - t1) / test_interval
return tact_time
def _get_prior(self):
data = get_anchors()
return data
local_rank = 0
if pretrained:
if distributed:
if local_rank == 0:
download_weights(backbone)
dist.barrier()
else:
download_weights(backbone)
#----------------------------------------------------#
# 获取classes和anchor
#----------------------------------------------------#
class_names, num_classes = get_classes(classes_path)
num_classes += 1
anchors = get_anchors(input_shape, anchors_size, backbone)
model = SSD300(num_classes, backbone, pretrained)
if not pretrained:
weights_init(model)
if model_path != '':
#------------------------------------------------------#
# 权值文件请看README，百度网盘下载
#------------------------------------------------------#
if local_rank == 0:
print('Load weights {}.'.format(model_path))
#------------------------------------------------------#
# 根据预训练权重的Key和模型的Key进行加载
#------------------------------------------------------#
model_dict = model.state_dict()
def detect_image(self, image_id, image):
self.confidence = 0.01
f = open("./input/detection-results/" + image_id + ".txt", "w")
image_shape = np.array(np.shape(image)[0:2])
old_width, old_height = image_shape[1], image_shape[0]
old_image = copy.deepcopy(image)
#---------------------------------------------------------#
# 给原图像进行resize，resize到短边为600的大小上
#---------------------------------------------------------#
width, height = get_new_img_size(old_width, old_height)
image = image.resize([width, height], Image.BICUBIC)
photo = np.array(image, dtype=np.float64)
#-----------------------------------------------------------#
# 图片预处理，归一化。
#-----------------------------------------------------------#
photo = preprocess_input(np.expand_dims(photo, 0))
rpn_pred = self.model_rpn.predict(photo)
#-----------------------------------------------------------#
# 将建议框网络的预测结果进行解码
#-----------------------------------------------------------#
base_feature_width, base_feature_height = self.get_img_output_length(
width, height)
anchors = get_anchors([base_feature_width, base_feature_height], width,
height)
rpn_results = self.bbox_util.detection_out_rpn(rpn_pred, anchors)
#-------------------------------------------------------------#
# 在获得建议框和共享特征层后，将二者传入classifier中进行预测
#-------------------------------------------------------------#
base_layer = rpn_pred[2]
proposal_box = np.array(rpn_results)[:, :, 1:]
temp_ROIs = np.zeros_like(proposal_box)
temp_ROIs[:, :, [0, 1, 2, 3]] = proposal_box[:, :, [1, 0, 3, 2]]
classifier_pred = self.model_classifier.predict(
[base_layer, temp_ROIs])
#-------------------------------------------------------------#
# 利用classifier的预测结果对建议框进行解码，获得预测框
#-------------------------------------------------------------#
results = self.bbox_util.detection_out_classifier(
classifier_pred, proposal_box, self.config, self.confidence)
if len(results[0]) == 0:
return old_image
results = np.array(results[0])
boxes = results[:, :4]
top_conf = results[:, 4]
top_label_indices = results[:, 5]
boxes[:, [0, 2]] = boxes[:, [0, 2]] * old_width
boxes[:, [1, 3]] = boxes[:, [1, 3]] * old_height
for i, c in enumerate(top_label_indices):
predicted_class = self.class_names[int(c)]
score = str(top_conf[i])
left, top, right, bottom = boxes[i]
f.write("%s %s %s %s %s %s\n" %
(predicted_class, score[:6], str(int(left)), str(
int(top)), str(int(right)), str(int(bottom))))
f.close()
return
# 这里的SSD512不是原版的SSD512。
# 原版的SSD512的比SSD300多一个预测层；
# 修改起来比较麻烦，所以我只是修改了输入大小
# 这样也可以用比较大的图片训练，对于小目标有好处
#----------------------------------------------------#
input_shape = [300, 300, 3]
#----------------------------------------------------#
# 可用于设定先验框的大小，默认的anchors_size
# 是根据voc数据集设定的，大多数情况下都是通用的！
# 如果想要检测小物体，可以修改anchors_size
# 一般调小浅层先验框的大小就行了！因为浅层负责小物体检测！
# 比如anchors_size = [21,45,99,153,207,261,315]
#----------------------------------------------------#
anchors_size = [30, 60, 111, 162, 213, 264, 315]
priors = get_anchors((input_shape[0], input_shape[1]), anchors_size)
bbox_util = BBoxUtility(NUM_CLASSES, priors)
model = SSD300(input_shape, NUM_CLASSES, anchors_size)
#------------------------------------------------------#
# 权值文件请看README，百度网盘下载
# 训练自己的数据集时提示维度不匹配正常
# 预测的东西都不一样了自然维度不匹配
#------------------------------------------------------#
model_path = 'model_data/mobilenet_ssd_weights.h5'
model.load_weights(model_path, by_name=True, skip_mismatch=True)
#-------------------------------------------------------------------------------#
# 训练参数的设置
# logging表示tensorboard的保存地址
# checkpoint用于设置权值保存的细节，period用于修改多少epoch保存一次
