DetectEmotion.py 文件源码

def extract_face_features(gray, detected_face, offset_coefficients):
        (x, y, w, h) = detected_face
        #print x , y, w ,h
        horizontal_offset = np.int(np.floor(offset_coefficients[0] * w))
        vertical_offset = np.int(np.floor(offset_coefficients[1] * h))


        extracted_face = gray[y+vertical_offset:y+h, 
                          x+horizontal_offset:x-horizontal_offset+w]
        #print extracted_face.shape
        new_extracted_face = zoom(extracted_face, (48. / extracted_face.shape[0], 
                                               48. / extracted_face.shape[1]))
        new_extracted_face = new_extracted_face.astype(np.float32)
        new_extracted_face /= float(new_extracted_face.max())
        return new_extracted_face