def detect_onet(self, im, dets):
"""Get face candidates using onet
Parameters:
----------
im: numpy array
input image array
dets: numpy array
detection results of rnet
Returns:
-------
boxes_align: numpy array
boxes after calibration
landmarks_align: numpy array
landmarks after calibration
"""
h, w, c = im.shape
if dets is None:
return None, None
dets = utils.convert_to_square(dets)
dets[:, 0:4] = np.round(dets[:, 0:4])
[dy, edy, dx, edx, y, ey, x, ex, tmpw, tmph] = self.pad(dets, w, h)
num_boxes = dets.shape[0]
cropped_ims_tensors = []
for i in range(num_boxes):
try:
if tmph[i] > 0 and tmpw[i] > 0:
tmp = np.zeros((tmph[i], tmpw[i], 3), dtype=np.uint8)
tmp[dy[i]:edy[i], dx[i]:edx[i], :] = im[y[i]:ey[i], x[i]:ex[i], :]
crop_im = cv2.resize(tmp, (48, 48))
crop_im_tensor = convert_image_to_tensor(crop_im)
cropped_ims_tensors.append(crop_im_tensor)
except ValueError as e:
print(e)
feed_imgs = torch.stack(cropped_ims_tensors)
feed_imgs = feed_imgs.to(self.device)
cls_map, reg, landmark = self.onet_detector(feed_imgs)
cls_map = cls_map.cpu().data.numpy()
reg = reg.cpu().data.numpy()
landmark = landmark.cpu().data.numpy()
keep_inds = np.where(cls_map > self.thresh[2])[0]
if len(keep_inds) > 0:
boxes = dets[keep_inds]
cls = cls_map[keep_inds]
reg = reg[keep_inds]
landmark = landmark[keep_inds]
else:
return None, None
keep = utils.nms(boxes, 0.7, mode="Minimum")
if len(keep) == 0:
return None, None
keep_cls = cls[keep]
keep_boxes = boxes[keep]
keep_reg = reg[keep]
keep_landmark = landmark[keep]
bw = keep_boxes[:, 2] - keep_boxes[:, 0]
bh = keep_boxes[:, 3] - keep_boxes[:, 1]
align_topx = keep_boxes[:, 0] + keep_reg[:, 0] * bw
align_topy = keep_boxes[:, 1] + keep_reg[:, 1] * bh
align_bottomx = keep_boxes[:, 2] + keep_reg[:, 2] * bw
align_bottomy = keep_boxes[:, 3] + keep_reg[:, 3] * bh
align_landmark_topx = keep_boxes[:, 0]
align_landmark_topy = keep_boxes[:, 1]
boxes_align = np.vstack([align_topx,
align_topy,
align_bottomx,
align_bottomy,
keep_cls[:, 0]
])
boxes_align = boxes_align.T
landmark = np.vstack([
align_landmark_topx + keep_landmark[:, 0] * bw,
align_landmark_topy + keep_landmark[:, 1] * bh,
align_landmark_topx + keep_landmark[:, 2] * bw,
align_landmark_topy + keep_landmark[:, 3] * bh,
align_landmark_topx + keep_landmark[:, 4] * bw,
align_landmark_topy + keep_landmark[:, 5] * bh,
align_landmark_topx + keep_landmark[:, 6] * bw,
align_landmark_topy + keep_landmark[:, 7] * bh,
align_landmark_topx + keep_landmark[:, 8] * bw,
align_landmark_topy + keep_landmark[:, 9] * bh,
])
landmark_align = landmark.T
return boxes_align, landmark_align
def detect_rnet(self, im, dets):
"""Get face candidates using rnet
Parameters:
----------
im: numpy array
input image array
dets: numpy array
detection results of pnet
Returns:
-------
boxes: numpy array
detected boxes before calibration
boxes_align: numpy array
boxes after calibration
"""
h, w, c = im.shape
if dets is None:
return None, None
dets = utils.convert_to_square(dets)
dets[:, 0:4] = np.round(dets[:, 0:4])
[dy, edy, dx, edx, y, ey, x, ex, tmpw, tmph] = self.pad(dets, w, h)
num_boxes = dets.shape[0]
cropped_ims_tensors = []
for i in range(num_boxes):
try:
if tmph[i] > 0 and tmpw[i] > 0:
tmp = np.zeros((tmph[i], tmpw[i], 3), dtype=np.uint8)
tmp[dy[i]:edy[i], dx[i]:edx[i], :] = im[y[i]:ey[i], x[i]:ex[i], :]
crop_im = cv2.resize(tmp, (24, 24))
crop_im_tensor = convert_image_to_tensor(crop_im)
# cropped_ims_tensors[i, :, :, :] = crop_im_tensor
cropped_ims_tensors.append(crop_im_tensor)
except ValueError as e:
print('dy: {}, edy: {}, dx: {}, edx: {}'.format(dy[i], edy[i], dx[i], edx[i]))
print('y: {}, ey: {}, x: {}, ex: {}'.format(y[i], ey[i], x[i], ex[i]))
print(e)
feed_imgs = torch.stack(cropped_ims_tensors)
feed_imgs = feed_imgs.to(self.device)
cls_map, reg = self.rnet_detector(feed_imgs)
cls_map = cls_map.cpu().data.numpy()
reg = reg.cpu().data.numpy()
keep_inds = np.where(cls_map > self.thresh[1])[0]
if len(keep_inds) > 0:
boxes = dets[keep_inds]
cls = cls_map[keep_inds]
reg = reg[keep_inds]
else:
return None, None
keep = utils.nms(boxes, 0.7)
if len(keep) == 0:
return None, None
keep_cls = cls[keep]
keep_boxes = boxes[keep]
keep_reg = reg[keep]
bw = keep_boxes[:, 2] - keep_boxes[:, 0]
bh = keep_boxes[:, 3] - keep_boxes[:, 1]
boxes = np.vstack([keep_boxes[:, 0],
keep_boxes[:, 1],
keep_boxes[:, 2],
keep_boxes[:, 3],
keep_cls[:, 0]
])
align_topx = keep_boxes[:, 0] + keep_reg[:, 0] * bw
align_topy = keep_boxes[:, 1] + keep_reg[:, 1] * bh
align_bottomx = keep_boxes[:, 2] + keep_reg[:, 2] * bw
align_bottomy = keep_boxes[:, 3] + keep_reg[:, 3] * bh
boxes_align = np.vstack([align_topx,
align_topy,
align_bottomx,
align_bottomy,
keep_cls[:, 0]
])
boxes = boxes.T
boxes_align = boxes_align.T
return boxes, boxes_align
def detect_pnet(self, im):
"""Get face candidates through pnet
Parameters:
----------
im: numpy array, input image array
Returns:
-------
boxes: numpy array
detected boxes before calibration
boxes_align: numpy array
boxes after calibration
"""
h, w, c = im.shape
net_size = 12
current_scale = float(net_size) / \
self.min_face_size # find initial scale
im_resized = self.resize_image(im, current_scale)
current_height, current_width, _ = im_resized.shape
# fcn for pnet
all_boxes = list()
while min(current_height, current_width) > net_size:
image_tensor = convert_image_to_tensor(im_resized)
feed_imgs = image_tensor.unsqueeze(0)
feed_imgs = feed_imgs.to(self.device)
cls_map, reg = self.pnet_detector(feed_imgs)
cls_map_np = convert_chwTensor_to_hwcNumpy(cls_map.cpu())
reg_np = convert_chwTensor_to_hwcNumpy(reg.cpu())
boxes = self.generate_bounding_box(
cls_map_np[0, :, :], reg_np, current_scale, self.thresh[0])
current_scale *= self.scale_factor
im_resized = self.resize_image(im, current_scale)
current_height, current_width, _ = im_resized.shape
if boxes.size == 0:
continue
keep = utils.nms(boxes[:, :5], 0.5, 'Union')
boxes = boxes[keep]
all_boxes.append(boxes)
if len(all_boxes) == 0:
return None, None
all_boxes = np.vstack(all_boxes)
# merge the detection from first stage
keep = utils.nms(all_boxes[:, 0:5], 0.7, 'Union')
all_boxes = all_boxes[keep]
bw = all_boxes[:, 2] - all_boxes[:, 0]
bh = all_boxes[:, 3] - all_boxes[:, 1]
boxes = np.vstack([all_boxes[:, 0],
all_boxes[:, 1],
all_boxes[:, 2],
all_boxes[:, 3],
all_boxes[:, 4]
])
boxes = boxes.T
align_topx = all_boxes[:, 0] + all_boxes[:, 5] * bw
align_topy = all_boxes[:, 1] + all_boxes[:, 6] * bh
align_bottomx = all_boxes[:, 2] + all_boxes[:, 7] * bw
align_bottomy = all_boxes[:, 3] + all_boxes[:, 8] * bh
# refine the boxes
boxes_align = np.vstack([align_topx,
align_topy,
align_bottomx,
align_bottomy,
all_boxes[:, 4]
])
boxes_align = boxes_align.T
return boxes, boxes_align
def detect_onet(self, im, dets):
"""Get face candidates using onet
Parameters:
----------
im: numpy array
input image array
dets: numpy array
detection results of rnet
Returns:
-------
boxes_align: numpy array
boxes after calibration
landmarks_align: numpy array
landmarks after calibration
"""
h, w, c = im.shape
if dets is None:
return None, None
if dets.shape[0] == 0:
return None, None
detss = dets
dets = self.square_bbox(dets)
dets[:, 0:4] = np.round(dets[:, 0:4])
[dy, edy, dx, edx, y, ey, x, ex, tmpw, tmph] = self.pad(dets, w, h)
num_boxes = dets.shape[0]
# cropped_ims_tensors = np.zeros((num_boxes, 3, 24, 24), dtype=np.float32)
cropped_ims_tensors = []
for i in range(num_boxes):
try:
tmp = np.zeros((tmph[i], tmpw[i], 3), dtype=np.uint8)
# crop input image
tmp[dy[i]:edy[i] + 1,
dx[i]:edx[i] + 1, :] = im[y[i]:ey[i] + 1,
x[i]:ex[i] + 1, :]
except:
print(dy[i], edy[i], dx[i], edx[i], y[i], ey[i], x[i], ex[i],
tmpw[i], tmph[i])
print(dets[i])
print(detss[i])
print(h, w)
crop_im = cv2.resize(tmp, (48, 48))
crop_im_tensor = image_tools.convert_image_to_tensor(crop_im)
# cropped_ims_tensors[i, :, :, :] = crop_im_tensor
cropped_ims_tensors.append(crop_im_tensor)
feed_imgs = Variable(torch.stack(cropped_ims_tensors))
if self.rnet_detector.use_cuda:
feed_imgs = feed_imgs.cuda()
cls_map, reg = self.onet_detector(feed_imgs)
cls_map = cls_map.cpu().data.numpy()
reg = reg.cpu().data.numpy()
keep_inds = np.where(cls_map > self.thresh[2])[0]
if len(keep_inds) > 0:
boxes = dets[keep_inds]
cls = cls_map[keep_inds]
reg = reg[keep_inds]
else:
return None, None
keep = utils.nms(boxes, 0.7, mode="Minimum")
if len(keep) == 0:
return None, None
keep_cls = cls[keep]
keep_boxes = boxes[keep]
keep_reg = reg[keep]
bw = keep_boxes[:, 2] - keep_boxes[:, 0] + 1
bh = keep_boxes[:, 3] - keep_boxes[:, 1] + 1
align_topx = keep_boxes[:, 0] + keep_reg[:, 0] * bw
align_topy = keep_boxes[:, 1] + keep_reg[:, 1] * bh
align_bottomx = keep_boxes[:, 2] + keep_reg[:, 2] * bw
align_bottomy = keep_boxes[:, 3] + keep_reg[:, 3] * bh
boxes_align = np.vstack([
align_topx,
align_topy,
align_bottomx,
align_bottomy,
keep_cls[:, 0],
])
boxes_align = boxes_align.T
return boxes_align
def detect_rnet(self, im, dets):
"""Get face candidates using rnet
Parameters:
----------
im: numpy array
input image array
dets: numpy array
detection results of pnet
Returns:
-------
boxes: numpy array
detected boxes before calibration
boxes_align: numpy array
boxes after calibration
"""
# im: an input image
h, w, c = im.shape
if dets is None:
return None, None
if dets.shape[0] == 0:
return None, None
# (705, 5) = [x1, y1, x2, y2, score, reg]
# print("pnet detection {0}".format(dets.shape))
# time.sleep(5)
detss = dets
# return square boxes
dets = self.square_bbox(dets)
detsss = dets
# rounds
dets[:, 0:4] = np.round(dets[:, 0:4])
[dy, edy, dx, edx, y, ey, x, ex, tmpw, tmph] = self.pad(dets, w, h)
num_boxes = dets.shape[0]
# cropped_ims_tensors = np.zeros((num_boxes, 3, 24, 24), dtype=np.float32)
cropped_ims_tensors = []
for i in range(num_boxes):
try:
tmp = np.zeros((tmph[i], tmpw[i], 3), dtype=np.uint8)
tmp[dy[i]:edy[i] + 1,
dx[i]:edx[i] + 1, :] = im[y[i]:ey[i] + 1,
x[i]:ex[i] + 1, :]
except:
print(dy[i], edy[i], dx[i], edx[i], y[i], ey[i], x[i], ex[i],
tmpw[i], tmph[i])
print(dets[i])
print(detss[i])
print(detsss[i])
print(h, w)
exit()
crop_im = cv2.resize(tmp, (24, 24))
crop_im_tensor = image_tools.convert_image_to_tensor(crop_im)
# cropped_ims_tensors[i, :, :, :] = crop_im_tensor
cropped_ims_tensors.append(crop_im_tensor)
feed_imgs = Variable(torch.stack(cropped_ims_tensors))
if self.rnet_detector.use_cuda:
feed_imgs = feed_imgs.cuda()
cls_map, reg = self.rnet_detector(feed_imgs)
cls_map = cls_map.cpu().data.numpy()
reg = reg.cpu().data.numpy()
keep_inds = np.where(cls_map > self.thresh[1])[0]
if len(keep_inds) > 0:
boxes = dets[keep_inds]
cls = cls_map[keep_inds]
reg = reg[keep_inds]
else:
return None, None
keep = utils.nms(boxes, 0.7)
if len(keep) == 0:
return None, None
keep_cls = cls[keep]
keep_boxes = boxes[keep]
keep_reg = reg[keep]
bw = keep_boxes[:, 2] - keep_boxes[:, 0] + 1
bh = keep_boxes[:, 3] - keep_boxes[:, 1] + 1
boxes = np.vstack([
keep_boxes[:, 0],
keep_boxes[:, 1],
keep_boxes[:, 2],
keep_boxes[:, 3],
keep_cls[:, 0],
])
align_topx = keep_boxes[:, 0] + keep_reg[:, 0] * bw
align_topy = keep_boxes[:, 1] + keep_reg[:, 1] * bh
align_bottomx = keep_boxes[:, 2] + keep_reg[:, 2] * bw
align_bottomy = keep_boxes[:, 3] + keep_reg[:, 3] * bh
boxes_align = np.vstack([
align_topx,
align_topy,
align_bottomx,
align_bottomy,
keep_cls[:, 0],
])
boxes = boxes.T
boxes_align = boxes_align.T
# remove invalid box
valindex = [True for _ in range(boxes_align.shape[0])]
for i in range(boxes_align.shape[0]):
if boxes_align[i][2] - boxes_align[i][0] <= 3 or boxes_align[i][
3] - boxes_align[i][1] <= 3:
valindex[i] = False
print('rnet has one smaller than 3')
else:
if boxes_align[i][2] < 1 or boxes_align[i][
0] > w - 2 or boxes_align[i][3] < 1 or boxes_align[i][
1] > h - 2:
valindex[i] = False
print('rnet has one out')
boxes_align = boxes_align[valindex, :]
boxes = boxes[valindex, :]
return boxes, boxes_align
def detect_pnet(self, im):
"""Get face candidates through pnet
Parameters:
----------
im: numpy array
input image array
one batch
Returns:
-------
boxes: numpy array
detected boxes before calibration
boxes_align: numpy array
boxes after calibration
"""
# im = self.unique_image_format(im)
# original wider face data
h, w, c = im.shape
net_size = 12
current_scale = float(
net_size) / self.min_face_size # find initial scale
# print('imgshape:{0}, current_scale:{1}'.format(im.shape, current_scale))
im_resized = self.resize_image(im, current_scale) # scale = 1.0
current_height, current_width, _ = im_resized.shape
# fcn
all_boxes = list()
while min(current_height, current_width) > net_size:
# print('current:',current_height, current_width)
feed_imgs = []
image_tensor = image_tools.convert_image_to_tensor(im_resized)
feed_imgs.append(image_tensor)
feed_imgs = torch.stack(feed_imgs)
feed_imgs = Variable(feed_imgs)
if self.pnet_detector.use_cuda:
feed_imgs = feed_imgs.cuda()
# self.pnet_detector is a trained pnet torch model
# receptive field is 12×12
# 12×12 --> score
# 12×12 --> bounding box
cls_map, reg = self.pnet_detector(feed_imgs)
cls_map_np = image_tools.convert_chwTensor_to_hwcNumpy(
cls_map.cpu())
reg_np = image_tools.convert_chwTensor_to_hwcNumpy(reg.cpu())
# print(cls_map_np.shape, reg_np.shape) # cls_map_np = (1, n, m, 1) reg_np.shape = (1, n, m 4)
# time.sleep(5)
# landmark_np = image_tools.convert_chwTensor_to_hwcNumpy(landmark.cpu())
# self.threshold[0] = 0.6
# print(cls_map_np[0,:,:].shape)
# time.sleep(4)
# boxes = [x1, y1, x2, y2, score, reg]
boxes = self.generate_bounding_box(cls_map_np[0, :, :], reg_np,
current_scale, self.thresh[0])
# cv2.rectangle(im,(300,100),(400,200),color=(0,0,0))
# cv2.rectangle(im,(400,200),(500,300),color=(0,0,0))
# generate pyramid images
current_scale *= self.scale_factor # self.scale_factor = 0.709
im_resized = self.resize_image(im, current_scale)
current_height, current_width, _ = im_resized.shape
if boxes.size == 0:
continue
# non-maximum suppresion
keep = utils.nms(boxes[:, :5], 0.5, 'Union')
boxes = boxes[keep]
all_boxes.append(boxes)
if len(all_boxes) == 0:
return None, None
all_boxes = np.vstack(all_boxes)
# print("shape of all boxes {0}".format(all_boxes.shape))
# time.sleep(5)
# merge the detection from first stage
keep = utils.nms(all_boxes[:, 0:5], 0.7, 'Union')
all_boxes = all_boxes[keep]
# boxes = all_boxes[:, :5]
# x2 - x1
# y2 - y1
bw = all_boxes[:, 2] - all_boxes[:, 0] + 1
bh = all_boxes[:, 3] - all_boxes[:, 1] + 1
boxes = np.vstack([
all_boxes[:, 0],
all_boxes[:, 1],
all_boxes[:, 2],
all_boxes[:, 3],
all_boxes[:, 4],
])
boxes = boxes.T
# boxes = boxes = [x1, y1, x2, y2, score, reg] reg= [px1, py1, px2, py2] (in prediction)
align_topx = all_boxes[:, 0] + all_boxes[:, 5] * bw
align_topy = all_boxes[:, 1] + all_boxes[:, 6] * bh
align_bottomx = all_boxes[:, 2] + all_boxes[:, 7] * bw
align_bottomy = all_boxes[:, 3] + all_boxes[:, 8] * bh
# refine the boxes
boxes_align = np.vstack([
align_topx,
align_topy,
align_bottomx,
align_bottomy,
all_boxes[:, 4],
])
boxes_align = boxes_align.T
# remove invalid box
valindex = [True for _ in range(boxes_align.shape[0])]
for i in range(boxes_align.shape[0]):
if boxes_align[i][2] - boxes_align[i][0] <= 3 or boxes_align[i][
3] - boxes_align[i][1] <= 3:
valindex[i] = False
print('pnet has one smaller than 3')
else:
if boxes_align[i][2] < 1 or boxes_align[i][
0] > w - 2 or boxes_align[i][3] < 1 or boxes_align[i][
1] > h - 2:
valindex[i] = False
print('pnet has one out')
boxes_align = boxes_align[valindex, :]
boxes = boxes[valindex, :]
return boxes, boxes_align
