x1, x2, y1, y2 = apply_offsets(face_coordinates, offsets)
gray_face = gray_image[y1:y2, x1:x2]
# processing input
try:
gray_face = cv2.resize(gray_face, (target_size))
except:
continue
gray_face = preprocess_input(gray_face, True)
gray_face = np.expand_dims(gray_face, 0)
gray_face = np.expand_dims(gray_face, -1)
# prediction
predicted_class = np.argmax(model.predict(gray_face))
label_text = labels[predicted_class]
gradient_function = compile_gradient_function(model,
predicted_class, 'conv2d_7')
register_gradient()
guided_model = modify_backprop(model, 'GuidedBackProp', task)
saliency_function = compile_saliency_function(guided_model, 'conv2d_7')
guided_gradCAM = calculate_guided_gradient_CAM(gray_face,
gradient_function, saliency_function)
guided_gradCAM = cv2.resize(guided_gradCAM, (x2-x1, y2-y1))
rgb_guided_gradCAM = np.repeat(guided_gradCAM[:, :, np.newaxis], 3, axis=2)
rgb_image[y1:y2, x1:x2, :] = rgb_guided_gradCAM
draw_bounding_box((x1, y1, x2 - x1, y2 - y1), rgb_image, color)
bgr_image = cv2.cvtColor(rgb_image, cv2.COLOR_RGB2BGR)
cv2.imwrite('../images/guided_gradCAM.png', bgr_image)
rgb_image = cv2.cvtColor(bgr_image, cv2.COLOR_BGR2RGB)
faces = detect_faces(face_detection, gray_image)
for face_coordinates in faces:
x1, x2, y1, y2 = apply_offsets(face_coordinates, offsets)
gray_face = gray_image[y1:y2, x1:x2]
try:
gray_face = cv2.resize(gray_face, (target_size))
except:
continue
gray_face = preprocess_input(gray_face, True)
gray_face = np.expand_dims(gray_face, 0)
gray_face = np.expand_dims(gray_face, -1)
guided_gradCAM = calculate_guided_gradient_CAM(gray_face,
gradient_function, saliency_function)
guided_gradCAM = cv2.resize(guided_gradCAM, (x2-x1, y2-y1))
try:
rgb_guided_gradCAM = np.repeat(guided_gradCAM[:, :, np.newaxis],
3, axis=2)
rgb_image[y1:y2, x1:x2, :] = rgb_guided_gradCAM
except:
continue
draw_bounding_box((x1, y1, x2 - x1, y2 - y1), rgb_image, color)
bgr_image = cv2.cvtColor(rgb_image, cv2.COLOR_RGB2BGR)
try:
cv2.imshow('window_frame', bgr_image)
except:
continue
if cv2.waitKey(1) & 0xFF == ord('q'):
break