def visualize(self, img, json_data, outfile):
"""
Visualize detections
:param img: image where masks will be drawn
:param json_data: json generated by save_json_boxes()
:param outfile: output png file
"""
reverse_map = {
val: key
for (key, val) in self.__maskrcnn_to_coco.items()
}
ids = np.array([reverse_map[x['class']] for x in json_data])
scores = np.array([float(x['score']) for x in json_data])
bboxes = [x['bbox'] for x in json_data]
masks = [extract_mask(x['mask']) for x in json_data]
#Plot data
fig = plt.figure()
ax = fig.add_subplot(1, 1, 1)
out_img = plot_mask(img, masks)
plot_bbox(out_img,
bboxes,
scores,
ids,
class_names=self.__model.classes,
ax=ax)
plt.savefig(outfile)
plt.close()
def detect(event, context):
# get the url
data = json.loads(event['body'])
if 'url' not in data:
response = {"statusCode": 500, "body": "Please specify a url"}
return response
url = data['url']
# download the image
urlSplit = url.split('/')
fileName = urlSplit[-1]
filePath = wget.download(url, out="/tmp/{0}".format(fileName))
# classify the image
x, img = load_test(filePath, short=512)
classes, scores, bbox = ssdnet(x)
results = []
# for each result, we'll take the each
# them if their score is greater than a given threshold
for i in range(len(scores[0])):
if float(scores[0][i].asnumpy().tolist()[0]) > score_threshold:
results.append({
"class":
ssdnet.classes[int(classes[0][i].asnumpy().tolist()[0])],
"score":
float(scores[0][i].asnumpy().tolist()[0]),
"bbox":
bbox[0][i].asnumpy().tolist()
})
# plot the box of the image and then store it in S3
plot_bbox(img, bbox[0], scores[0], classes[0], class_names=ssdnet.classes)
tmpOutPath = "/tmp/detect_{0}".format(fileName)
plt.savefig(tmpOutPath)
s3_key = "images/detect_{0}".format(fileName)
s3_bucket_name = "gudongfeng.me"
s3.upload_file(tmpOutPath, s3_bucket_name, s3_key)
body = {
"bounding_boxes": results,
"s3_url": getS3Url(s3_bucket_name, s3_key)
}
response = {
"statusCode": 200,
"body": json.dumps(body),
"headers": {
'Access-Control-Allow-Origin': '*',
'Access-Control-Allow-Credentials': True,
'Content-Type': 'application/json'
},
}
return response
def viz(self, indexes=None):
from gluoncv.utils.viz import plot_bbox
import matplotlib.pyplot as plt
if indexes is None:
indexes = range(len(self))
for index in indexes:
x = self.at_with_image_path(index)
img_path = x[0]
img = cv2.imread(img_path)[:, :, ::-1]
plot_bbox(img,
x[1][:, :4],
labels=x[1][:, 4],
class_names=self.classes)
plt.show()
def plot_example(img, datasets, label, preds, axs, threshold, classes):
for i, (dataset, ax) in enumerate(zip(datasets, axs)):
rimg = img
# sizes = (800, 600)
# rimg = cv2.resize(img, dsize=sizes[model], interpolation=cv2.INTER_NEAREST)
pred = preds[dataset]
ax = viz.plot_bbox(rimg,
pred[:, :4],
scores=pred[:, 5],
labels=pred[:, 4],
class_names=classes,
ax=ax,
thresh=threshold)
ax.get_xaxis().set_visible(False)
ax.get_yaxis().set_visible(False)
if i == 0:
bbox_props = dict(boxstyle="square,pad=0.3", fc="w", ec="b", lw=2)
ax.text(20,
60,
label,
fontdict={
'weight': 'bold',
'size': 20,
'color': 'black'
},
bbox=bbox_props)
dataset = val_ds_real
def run(self, img_name, visualize=True, thresh=0.9):
'''
User function: Run inference on image and visualize it
Args:
img_name (str): Relative path to the image file
visualize (bool): If True, displays image with predicted bounding boxes and scores
thresh (float): Threshold for predicted scores. Scores for objects detected below this score will not be displayed
Returns:
dict: Contaning IDs, Scores and bounding box locations of predicted objects.
'''
x, image = gcv.data.transforms.presets.ssd.load_test(
img_name, self.system_dict["img_size"][0])
self.system_dict["local"]["cid"], self.system_dict["local"][
"score"], self.system_dict["local"]["bbox"] = self.system_dict[
"local"]["net"](x.copyto(self.system_dict["local"]["ctx"][0]))
tmp = {}
tmp["IDs"] = self.system_dict["local"]["cid"]
tmp["Scores"] = self.system_dict["local"]["score"]
tmp["Boxes"] = self.system_dict["local"]["bbox"]
ax = viz.plot_bbox(image,
self.system_dict["local"]["bbox"][0],
self.system_dict["local"]["score"][0],
self.system_dict["local"]["cid"][0],
class_names=self.system_dict["classes"],
thresh=thresh)
if (visualize):
plt.show()
plt.savefig("output.png")
return tmp
def viz_seg(self, indexes=None):
from gluoncv.utils.viz import plot_bbox
import matplotlib.pyplot as plt
if indexes is None:
indexes = range(len(self))
for index in indexes:
x = self.at_with_image_path(index)
img_path = x[0]
img = cv2.imread(img_path)[:, :, ::-1]
plot_bbox(img,
x[1][:, :4],
labels=x[1][:, 4],
class_names=self.classes)
for k in range(len(x[2])):
p = plt.Polygon(zip(x[2][k][0][:, 0], x[2][k][0][:, 1]),
alpha=.4)
plt.gca().add_patch(p)
plt.show()
def test_image_bb(file_path):
img = mx.image.imread(file_path)
print(img)
classes = ['mercedes'] # only one foreground class here
bb = [615, 1077, 840, 1298]
all_boxes = np.array([bb, bb])
print('label:', bb)
labels = ["", "", "", ""]
# display image and label
ax = viz.plot_bbox(img, all_boxes, labels=None, class_names=classes)
plt.show()
def test():
#Test
classes = ['mercedes']
test_url = 'https://blog.mercedes-benz-passion.com/wp-cb4ef-content/uploads/EQC_SPOT_Mercedes_Antoni_Garage_2019_Spot_EQC_Campaign_EN_DE_11.jpg'
download(test_url, 'benz_test.jpg')
classes = ['mercedes', 'person', 'car']
net = gcv.model_zoo.get_model('ssd_512_mobilenet1.0_custom',
classes=classes,
pretrained_base=False,
ctx=ctx)
net.load_parameters('ssd_512_mobilenet1.0_benz100.params')
net.hybridize()
x, image = gcv.data.transforms.presets.ssd.load_test('benz_test.jpg', 512)
cid, score, bbox = net(x)
ax = viz.plot_bbox(image, bbox[0], score[0], cid[0], class_names=classes)
plt.show()
def viz_result(img_ORI, det_full_masks, det_bbox, det_id, img_id):
CLASSES = [
'1j', '2j', '3j', '4j', '5j', '6j', '7j', '8j', '9j', '10j', '11j',
'12j', '13j', '14j', '15j', '16j', '17j'
]
train_image = img_ORI.transpose([1, 2, 0])
from matplotlib import pyplot as plt
from gluoncv.utils import viz
plt.ioff()
width, height = train_image.shape[1], train_image.shape[0]
train_masks = det_full_masks
plt_image = viz.plot_mask(train_image * 255, train_masks)
fig = plt.figure(figsize=(5, 10))
ax = fig.add_subplot(1, 1, 1)
ax = viz.plot_bbox(plt_image,
det_bbox,
labels=det_id,
class_names=CLASSES,
ax=ax)
# plt.show()
fig.savefig(str(img_id) + '.jpg')
def update_display(self):
if self.current_idx < len(self.filelist):
x, image = gcv.data.transforms.presets.ssd.load_test(self.filelist[self.current_idx], 512)
cid, score, bbox = self.net(x)
ax = viz.plot_bbox(image, bbox[0], score[0], cid[0], class_names="pot")
plt.rcParams['figure.figsize'] = (10,10)
plt.savefig("test.png")
plt.close()
self.img1 = Image.open(self.filelist[self.current_idx])
print(self.filelist[self.current_idx], self.img1)
self.render1 = ImageTk.PhotoImage(self.img1)
self.image1.configure(image=self.render1)
self.image1.image = self.render1
self.image1.update()
self.img2 = Image.open("test.png")
self.render2 = ImageTk.PhotoImage(self.img2)
self.image2.configure(image=self.render2)
self.image2.image = self.render2
self.image2.update()
def run(self, img_name, visualize=True, thresh=0.9):
x, image = gcv.data.transforms.presets.ssd.load_test(
img_name, self.system_dict["img_size"][0])
self.system_dict["local"]["cid"], self.system_dict["local"][
"score"], self.system_dict["local"]["bbox"] = self.system_dict[
"local"]["net"](x.copyto(self.system_dict["local"]["ctx"][0]))
tmp = {}
tmp["IDs"] = self.system_dict["local"]["cid"]
tmp["Scores"] = self.system_dict["local"]["score"]
tmp["Boxes"] = self.system_dict["local"]["bbox"]
if (visualize):
ax = viz.plot_bbox(image,
self.system_dict["local"]["bbox"][0],
self.system_dict["local"]["score"][0],
self.system_dict["local"]["cid"][0],
class_names=self.system_dict["classes"],
thresh=thresh)
plt.show()
return tmp
def create_widgets(self):
self.save = tk.Button(self)
self.save["text"] = "Save"
self.save["command"] = self.save_cmd
self.save.grid(row=0, column=0)
self.next = tk.Button(self)
self.next["text"] = "Next"
self.next["command"] = self.next_cmd
self.next.grid(row=0, column=1)
self.prev = tk.Button(self)
self.prev["text"] = "Prev"
self.prev["command"] = self.prev_cmd
self.prev.grid(row=0, column=2)
x, image = gcv.data.transforms.presets.ssd.load_test(self.filelist[self.current_idx], 512)
cid, score, bbox = self.net(x)
ax = viz.plot_bbox(image, bbox[0], score[0], cid[0], class_names="pot")
plt.rcParams['figure.figsize'] = (10, 10)
plt.savefig("test.png")
plt.close()
self.img1 = Image.open(self.filelist[self.current_idx])
print(self.filelist[self.current_idx], self.img1)
self.render1 = ImageTk.PhotoImage(self.img1)
self.image1 = Label(self, image=self.render1)
self.image1.grid(row=1, column=0)
self.img2 = Image.open("test.png")
self.render2 = ImageTk.PhotoImage(self.img2)
self.image2 = Label(self, image=self.render2)
self.image2.grid(row=1, column=2)
self.label = Label(self, text="{0:05d}".format(self.current_idx) + "/" + "{0:05d}".format(len(self.filelist)))
self.label.grid(row=2, column=0)
self.quit = tk.Button(self, text="QUIT", fg="red", command=self.master.destroy)
self.quit.grid(row=0, column=3)
cids = train_label[:, 4:5]
print('image:', train_image.shape)
print('bboxes:', bboxes.shape, 'class ids:', cids.shape)
# segm is a list of polygons which are arrays of points on the object boundary
print('masks', [[poly.shape for poly in polys] for polys in train_segm])
##############################################################################
# Plot the image with boxes and labels:
from matplotlib import pyplot as plt
from gluoncv.utils import viz
fig = plt.figure(figsize=(10, 10))
ax = fig.add_subplot(1, 1, 1)
ax = viz.plot_bbox(train_image,
bboxes,
labels=cids,
class_names=train_dataset.classes,
ax=ax)
plt.show()
##############################################################################
# To actually see the object segmentation, we need to convert polygons to masks
import numpy as np
from gluoncv.data.transforms import mask as tmask
width, height = train_image.shape[1], train_image.shape[0]
train_masks = np.stack(
[tmask.to_mask(polys, (width, height)) for polys in train_segm])
plt_image = viz.plot_mask(train_image, train_masks)
##############################################################################
train_image, train_label, train_segm = train_dataset[6]
bboxes = train_label[:, :4]
cids = train_label[:, 4:5]
print('image:', train_image.shape)
print('bboxes:', bboxes.shape, 'class ids:', cids.shape)
# segm is a list of polygons which are arrays of points on the object boundary
print('masks', [[poly.shape for poly in polys] for polys in train_segm])
##############################################################################
# Plot the image with boxes and labels:
from matplotlib import pyplot as plt
from gluoncv.utils import viz
fig = plt.figure(figsize=(10, 10))
ax = fig.add_subplot(1, 1, 1)
ax = viz.plot_bbox(train_image, bboxes, labels=cids, class_names=train_dataset.classes, ax=ax)
plt.show()
##############################################################################
# To actually see the object segmentation, we need to convert polygons to masks
import numpy as np
from gluoncv.data.transforms import mask as tmask
width, height = train_image.shape[1], train_image.shape[0]
train_masks = np.stack([tmask.to_mask(polys, (width, height)) for polys in train_segm])
plt_image = viz.plot_mask(train_image, train_masks)
##############################################################################
# Now plot the image with boxes, labels and masks
fig = plt.figure(figsize=(10, 10))
ax = fig.add_subplot(1, 1, 1)
ax = viz.plot_bbox(plt_image, bboxes, labels=cids, class_names=train_dataset.classes, ax=ax)
classes = [
'car', 'articulated_truck', 'bus', 'bicycle', 'motorcycle',
'motorized_vehicle', 'pedestrian', 'single_unit_truck', 'work_van',
'pickup_truck', 'non-motorized_vehicle'
]
net = gcv.model_zoo.get_model('ssd_512_resnet50_v1_voc', pretrained_base=False)
net.reset_class(classes)
net.load_parameters(
'../models_for_ensemble/epoch_22_ssd_512_resnet50_v1_voc_mio_tcd.params')
x, image = gcv.data.transforms.presets.ssd.load_test(
'../sample_data/00110281.jpg', 512)
cid, score, bbox = net(x)
ax = viz.plot_bbox(image, bbox[0], score[0], cid[0], class_names=classes)
plt.show()
x, image = gcv.data.transforms.presets.ssd.load_test(
'../sample_data/00110288.jpg', 512)
cid, score, bbox = net(x)
ax = viz.plot_bbox(image, bbox[0], score[0], cid[0], class_names=classes)
plt.show()
x, image = gcv.data.transforms.presets.ssd.load_test(
'../sample_data/00110306.jpg', 512)
cid, score, bbox = net(x)
ax = viz.plot_bbox(image, bbox[0], score[0], cid[0], class_names=classes)
plt.show()
x, image = gcv.data.transforms.presets.ssd.load_test(
##########################################################
# Data transform
# --------------
# We can read an image-label pair from the training dataset:
train_image, train_label = train_dataset[6]
bboxes = train_label[:, :4]
cids = train_label[:, 4:5]
print('image:', train_image.shape)
print('bboxes:', bboxes.shape, 'class ids:', cids.shape)
##############################################################################
# Plot the image, together with the bounding box labels:
from matplotlib import pyplot as plt
from gluoncv.utils import viz
ax = viz.plot_bbox(train_image.asnumpy(), bboxes, labels=cids, class_names=train_dataset.classes)
plt.show()
##############################################################################
# Validation images are quite similar to training because they were
# basically split randomly to different sets
val_image, val_label = val_dataset[6]
bboxes = val_label[:, :4]
cids = val_label[:, 4:5]
ax = viz.plot_bbox(val_image.asnumpy(), bboxes, labels=cids, class_names=train_dataset.classes)
plt.show()
##############################################################################
# For Faster-RCNN networks, the only data augmentation is horizontal flip.
from gluoncv.data.transforms import presets
from gluoncv import utils
def detect(self, image, plot=False):
image_tensor, image = gcv.data.transforms.presets.ssd.load_test(image, self.width)
labels, scores, bboxes = self.net(image_tensor.as_in_context(self.ctx))
if plot:
ax = viz.plot_bbox(image, bboxes[0], scores[0], labels[0], class_names=self.net.classes)
plt.show()
# Data transform
# --------------
# We can read an image-label pair from the training dataset:
train_image, train_label = train_dataset[6]
bboxes = train_label[:, :4]
cids = train_label[:, 4:5]
print('image:', train_image.shape)
print('bboxes:', bboxes.shape, 'class ids:', cids.shape)
##############################################################################
# Plot the image, together with the bounding box labels:
from matplotlib import pyplot as plt
from gluoncv.utils import viz
ax = viz.plot_bbox(train_image.asnumpy(),
bboxes,
labels=cids,
class_names=train_dataset.classes)
plt.show()
##############################################################################
# Validation images are quite similar to training because they were
# basically split randomly to different sets
val_image, val_label = val_dataset[6]
bboxes = val_label[:, :4]
cids = val_label[:, 4:5]
ax = viz.plot_bbox(val_image.asnumpy(),
bboxes,
labels=cids,
class_names=train_dataset.classes)
plt.show()
**kwargs)
if __name__ == '__main__':
classes = ['taxi', 'tax', 'quo', 'general', 'train', 'road', 'plane']
# orientation = ['0','90','180','270']
orientation = ['down', 'left', 'up', 'right']
net = ssd_512_mobilenet1_0_voc(classes=classes)
net.load_parameters('ssd_512_mobilenet1.0_pikachu.params')
# x, image = gcv.data.transforms.presets.ssd.load_test('./20190722135231_ori.jpg', 512)
x, image = gcv.data.transforms.presets.ssd.load_test(
'./201907121159292.jpg', 512)
# x, image = gcv.data.transforms.presets.ssd.load_test('./test.jpg', 512)
cid, score, bbox, orien = net(x)
ax = viz.plot_bbox(image,
bbox[0],
score[0],
cid[0],
class_names=classes,
thresh=0.3)
ax = viz.plot_bbox(image,
bbox[0],
score[0],
orien[0],
class_names=orientation,
thresh=0.3)
plt.show()
print(orien[0, :4, 0])
print(cid[0, :4, 0])
"""
使用VIS进行图片显示
"""
from matplotlib import pyplot as plt
from gluoncv.utils import viz
from PIL import Image
import numpy as np
image = np.array(Image.open("./images/biking.jpg"))
print(image.shape)
bboxes = np.array([[100, 100, 300, 400]])
cids = np.array([1])
classes = ["person", "cat"]
fig = plt.figure(figsize=(10, 10))
ax = fig.add_subplot(1, 1, 1)
ax = viz.plot_bbox(image, bboxes, labels=cids, class_names=classes, ax=ax)
plt.show()
# ----------------
# First we will start with a nice Pikachu dataset generated by rendering 3D models on random real-world scenes.
# You can refer to :ref:`sphx_glr_build_examples_datasets_detection_custom.py` for tutorial of how to create your own datasets.
url = 'https://apache-mxnet.s3-accelerate.amazonaws.com/gluon/dataset/pikachu/train.rec'
idx_url = 'https://apache-mxnet.s3-accelerate.amazonaws.com/gluon/dataset/pikachu/train.idx'
download(url, path='pikachu_train.rec', overwrite=False)
download(idx_url, path='pikachu_train.idx', overwrite=False)
#############################################################################################
# We can load dataset using ``RecordFileDetection``
dataset = gcv.data.RecordFileDetection('pikachu_train.rec')
classes = ['pikachu'] # only one foreground class here
image, label = dataset[0]
print('label:', label)
# display image and label
ax = viz.plot_bbox(image, bboxes=label[:, :4], labels=label[:, 4:5], class_names=classes)
plt.show()
#############################################################################################
# Pre-trained models
# -------------------
# Now we can grab a pre-trained model to finetune from. Here we have so many choices from :ref:`gluoncv-model-zoo-detection` Model Zoo.
# Again for demo purpose, we choose a fast SSD network with MobileNet1.0 backbone.
net = gcv.model_zoo.get_model('ssd_512_mobilenet1.0_voc', pretrained=True)
#############################################################################################
# reset network to predict pikachus!
net.reset_class(classes)
# now the output layers that used to map to VOC classes are now reset to distinguish pikachu (and background).
def test():
x, image = gcv.data.transforms.presets.ssd.load_test('ball.png', 300)
cid, score, bbox = net(x)
ax = viz.plot_bbox(image, bbox[0], score[0], cid[0], class_names='ball')
plt.show()
def page_loop(page_number, beginning_index, predictions, image_folder, pdf,
confidence_filter):
'''Loop over a single image page of the output pdf.'''
row = min(MAX_ROW, int((len(predictions) - beginning_index) / COL + 1))
last_index = min(len(predictions), beginning_index + row * COL)
logger.info(
"page number: {}, row number: {}, beginning index: {}, last index: {}".
format(page_number, row, beginning_index, last_index))
fig, axes = plt.subplots(nrows=row,
ncols=COL,
figsize=(20, 20),
facecolor='white',
dpi=100)
fig.suptitle('Page {}'.format(page_number), fontsize=24)
for i in range(beginning_index, last_index):
entry = predictions[i]
try:
image_path = os.path.join(image_folder, entry['image'])
img = cv2.cvtColor(cv2.imread(image_path), cv2.COLOR_BGR2RGB)
# Resize image to fit network input
# origs = cv2.resize(img, (SHAPE,SHAPE))
origs = img
# tensors, origs = yolo_transform.load_test(image_path, short=SHAPE)
height, width, _c = origs.shape
labels = np.array(entry['prediction'])
if (len(entry['prediction']) > 0):
cid = labels[:, 0]
score = labels[:, 1]
bbox = labels[:, range(2, 6)]
bbox[:, (0, 2)] *= width
bbox[:, (1, 3)] *= height
else:
cid = []
score = []
bbox = []
img_name = entry['image'].split(".")[0]
if row == 1:
ax = axes[(i - beginning_index) % COL]
else:
ax = axes[int((i - beginning_index) / COL),
(i - beginning_index) % COL]
ax.set_title("{}".format(img_name))
ax.get_xaxis().set_visible(False)
ax.get_yaxis().set_visible(False)
axis = viz.plot_bbox(origs,
bbox,
score,
cid,
thresh=confidence_filter,
class_names=CLASSES,
ax=ax)
except:
logger.error(json.dumps(entry, indent=2))
raise
next_page_number = page_number + 1
next_beginning_index = last_index
pdf.savefig()
plt.close()
return next_page_number, next_beginning_index
@property
def num_class(self):
return len(self.classes)
train_dataset = DetectionDataset('train_data')
print('class_names:', train_dataset.classes)
print('num_images:', len(train_dataset))
sample = train_dataset[0]
train_image = sample[0]
train_label = sample[1]
ax = viz.plot_bbox(train_image.asnumpy(),
train_label[:, :4],
labels=train_label[:, 4:5],
class_names=train_dataset.classes)
plt.show()
def train_model(train_dataset, epochs=50):
ctx = mx.gpu(0)
net = gcv.model_zoo.get_model('ssd_512_resnet50_v1_custom',
classes=train_dataset.classes,
transfer='coco')
net.collect_params().reset_ctx(ctx)
width, height = 512, 512 # suppose we use 512 as base training size
train_transform = gcv.data.transforms.presets.ssd.SSDDefaultTrainTransform(
width, height)
gcv.utils.random.seed(233)
def imshow(self, index):
path, gtboxes = self[index]
img = io.imread(path)
ax = viz.plot_bbox(img, bboxes=gtboxes, labels = np.zeros(len(gtboxes)), class_names=self.classes)
plt.show()
# batch_size, shuffle=False, batchify_fn=batchify_fn, last_batch='keep', num_workers=num_workers)
from matplotlib import pyplot as plt
from gluoncv.utils import viz
for i, batch in enumerate(train_loader):
if i > 0:
break
print('data:', batch[0].shape)
print('class targets:', batch[1].shape)
print('box targets:', batch[2].shape)
data = batch[0][0]
img = data.transpose((1, 2, 0)) * nd.array(
(0.229, 0.224, 0.225)) + nd.array((0.485, 0.456, 0.406))
# train_image2 = (train_image2 * 255).clip(0, 255)
train_image2 = (train_image2 * 255).clip(0, 255)
ax = viz.plot_bbox(train_image2.asnumpy(),
batch[1][:, :4],
labels=batch[2][:, ],
class_names=train_dataset.classes)
plt.show()
# img = data.transpose(1, 2, 0)
# img = img.asnumpy()
# cv2.imshow("win", img)
# cv2.waitKey(0)
# train_image, train_label = train_dataset[0]
#
# train_image2, cids, train_label2 = train_transformed(train_image, train_label)
#
# train_image2 = train_image2.transpose((1, 2, 0)) * nd.array((0.229, 0.224, 0.225)) + nd.array((0.485, 0.456, 0.406))
# # train_image2 = (train_image2 * 255).clip(0, 255)
# cvimg = train_image2.asnumpy()
#
# # cvimg = cv2.rectangle(cvimg, (train_label2[0][0], train_label2[0][1]), (train_label2[0][2], train_label2[0][3]), (0, 255, 0), 1)
def plot_bbox(img, bbox, score, cid, classes, model):
""" plots bounding boxes on the given image """
print("Plotting")
ax = viz.plot_bbox(img, bbox, score, cid, thresh=0.5, class_names=classes)
plt.suptitle(model)
plt.show()
wd = args.wd
momentum = args.momentum
netName = args.netName
gpu_ind = args.gpu_ind
path_to_model = args.finetune_model
# load dataset from Lst file
dataset = gcv.data.LstDetection(LSTpath, root=images_root)
print(dataset)
image = dataset[0][0]
label = dataset[0][1]
print('label:', label)
# display image and label
ax = viz.plot_bbox(image,
bboxes=label[:, :4],
labels=label[:, 4:5],
class_names=classes)
plt.savefig('labeled_image.jpg')
#initalize model
net, input_size = model_zoo.get_model(netName,
pretrained=False,
classes=classes)
if finetune_model == '':
net.initialize()
net.reset_class(classes)
else:
net.load_parameters(path_to_model)
net.reset_class(classes)
print(net)
def test_video():
fourcc = cv2.VideoWriter_fourcc(*"MJPG")
video_writer = None
classes = ['mercedes', 'person', 'car']
net = gcv.model_zoo.get_model('ssd_512_mobilenet1.0_custom',
classes=classes,
pretrained_base=False,
ctx=ctx)
net.load_parameters('ssd_512_mobilenet1.0_benz100.params')
net.hybridize()
#Test video
#url ='https://www.youtube.com/watch?v=7iGFH5HbWGM' #'https://github.com/bryanyzhu/tiny-ucf101/raw/master/abseiling_k400.mp4'
#video_fname = utils.download(url)
vr = VideoReader("test3.mov")
duration = len(vr)
print('The video contains %d frames' % duration)
root_path = "video_rec_tmp/"
cap = cv2.VideoCapture("test3.mov")
cnt = 0
while (cap.isOpened()):
ret, frame = cap.read()
imp_path = root_path + str(cnt) + ".jpg"
cv2.imwrite(imp_path, frame)
cnt += 1
x, image = gcv.data.transforms.presets.ssd.load_test(imp_path, 512)
cid, score, bbox = net(x)
if (cnt == 500000000):
ax = viz.plot_bbox(image,
bbox[0],
score[0],
cid[0],
class_names=classes)
plt.show()
if not ret: break
#ax = viz.plot_bbox(image, bbox[0], score[0], cid[0], class_names=classes) score[0]
viz.cv_plot_bbox(image, bbox[0], score[0], cid[0], class_names=classes)
image = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)
if video_writer is None:
height, width, layers = image.shape
video_writer = cv2.VideoWriter(
"video_rec_tmp/mercedes_rec15min.avi", fourcc, 30,
(width, height))
print(video_writer)
cv2.imshow('Mercedes Recognition & Track CV', image)
print(cnt)
if cv2.waitKey(1) & 0xFF == ord('q'):
break
cv2.imwrite(imp_path, image)
video_writer.write(image)
cap.release()
video_writer.release()
def visualize_data(img, gt_box, gt_label, teacher_box, teacher_score, teacher_label, classes):
img = inverse_transformation(img) # inverse transformation to get image
viz.plot_bbox(img, gt_box, mx.ndarray.ones(gt_box.shape[0]), gt_label, class_names=classes)
viz.plot_bbox(img, teacher_box, teacher_score, teacher_label, class_names=classes)
plt.show()
# First we will start with a nice Pikachu dataset generated by rendering 3D models on random real-world scenes.
# You can refer to :ref:`sphx_glr_build_examples_datasets_detection_custom.py` for tutorial of how to create your own datasets.
url = 'https://apache-mxnet.s3-accelerate.amazonaws.com/gluon/dataset/pikachu/train.rec'
idx_url = 'https://apache-mxnet.s3-accelerate.amazonaws.com/gluon/dataset/pikachu/train.idx'
download(url, path='pikachu_train.rec', overwrite=False)
download(idx_url, path='pikachu_train.idx', overwrite=False)
#############################################################################################
# We can load dataset using ``RecordFileDetection``
dataset = gcv.data.RecordFileDetection('pikachu_train.rec')
classes = ['pikachu'] # only one foreground class here
image, label = dataset[0]
print('label:', label)
# display image and label
ax = viz.plot_bbox(image,
bboxes=label[:, :4],
labels=label[:, 4:5],
class_names=classes)
plt.show()
#############################################################################################
# Pre-trained models
# -------------------
# Now we can grab a pre-trained model to finetune from. Here we have so many choices from :ref:`gluoncv-model-zoo-detection` Model Zoo.
# Again for demo purpose, we choose a fast SSD network with MobileNet1.0 backbone.
net = gcv.model_zoo.get_model('ssd_512_mobilenet1.0_voc', pretrained=True)
#############################################################################################
# reset network to predict pikachus!
net.reset_class(classes)
# now the output layers that used to map to VOC classes are now reset to distinguish pikachu (and background).
for data_img, data_label, _ in zip(*batch):
ids, scores, bboxes, _ = model(data_img.expand_dims(0))
distil_ids, distil_scores, distil_bboxes, _ = distil_model(
data_img.expand_dims(0))
data_label = data_label.expand_dims(0)
gt_label = data_label[:, :, 4:5]
gt_box = data_label[:, :, :4]
# we can change the threshold to display bounding boxes with lower scores
# smaller training will result in smaller confidence score
img = inverse_transformation(
data_img) # inverse transformation to get image
viz.plot_bbox(img,
gt_box[0],
mx.ndarray.ones(gt_box[0].shape[0]),
gt_label[0],
class_names=dataset.CLASSES)
viz.plot_bbox(img,
bboxes[0],
scores[0],
ids[0],
class_names=dataset.CLASSES,
thresh=0.3)
viz.plot_bbox(img,
distil_bboxes[0],
distil_scores[0],
distil_ids[0],
class_names=dataset.CLASSES,
thresh=0.3)
plt.show()