在 python 中使用 dlib 保存带有面部特征的图像？

Question

有没有一种方法可以使用 python 使用 dlib 保存带有面部特征点叠加的图像？因为我只找到了 c++ 的 draw_rectangle 函数！

Answer 1

得到面部点后，可以在原图上画出来，像这样：

def annotate_landmarks(im, landmarks):
    CIRCLE_SIZE = 1
    FONT_SCALE = 1
    THICKNESS_S = 1
    im = im.copy()
        #0-16: head
    for idx, point in enumerate(landmarks[0:17]):
        pos = (point[0, 0], point[0, 1])
        #cv2.putText(im, str(idx), pos, fontFace=cv2.FONT_HERSHEY_SCRIPT_SIMPLEX, fontScale=FONT_SCALE, color=(0, 0, 255))
        cv2.circle(im, pos, CIRCLE_SIZE, color=(255, 0, 0), thickness=THICKNESS_S)

    #17-21: left eye brow
    #22-26: right eye brow
    for idx, point in enumerate(landmarks[17:27]):
        pos = (point[0, 0], point[0, 1])
        #cv2.putText(im, str(idx), pos,fontFace=cv2.FONT_HERSHEY_SCRIPT_SIMPLEX,fontScale=FONT_SCALE,color=(0, 0, 255))
        cv2.circle(im, pos, CIRCLE_SIZE, color=(0, 255, 0), thickness=THICKNESS_S)

    #27-35: nose
    for idx, point in enumerate(landmarks[27:36]):
        pos = (point[0, 0], point[0, 1])
        #cv2.putText(im, str(idx), pos,fontFace=cv2.FONT_HERSHEY_SCRIPT_SIMPLEX,fontScale=FONT_SCALE,color=(0, 0, 255))
        cv2.circle(im, pos, CIRCLE_SIZE, color=(0, 0, 255), thickness=THICKNESS_S)

    #36-41: left eye
    #42-47: right eye
    for idx, point in enumerate(landmarks[36:48]):
        pos = (point[0, 0], point[0, 1])
        #cv2.putText(im, str(idx), pos,fontFace=cv2.FONT_HERSHEY_SCRIPT_SIMPLEX,fontScale=FONT_SCALE,color=(0, 0, 255))
        cv2.circle(im, pos, CIRCLE_SIZE, color=(0, 255, 255), thickness=THICKNESS_S)

    #48-68: lips
    for idx, point in enumerate(landmarks[48:68]):
        pos = (point[0, 0], point[0, 1])
        #cv2.putText(im, str(idx), pos,fontFace=cv2.FONT_HERSHEY_SCRIPT_SIMPLEX,fontScale=FONT_SCALE,color=(0, 0, 255))
        cv2.circle(im, pos, CIRCLE_SIZE, color=(255, 0, 255), thickness=THICKNESS_S)
    return im

Answer 2

这就是我的工作方式。

.....................
shape = predictor(img, d)
vec= np.empty([68,2], dtype=int)
for b in range(68):
    vec[b][0] = shape.part(b).x
    vec[b][1] = shape.part(b).y

 landmarks_img=annotate_landmarks(img,vec)
 cv2.imwrite("landmarked-"+os.path.basename(f),landmarks_img) #save image

我将此更改为 annotate_landmarks()

pos = (point[0], point[1])

而不是：

pos = (point[0, 0], point[0, 1])

在 python 中使用 dlib 保存带有面部特征的图像？

save image with face landmarks using dlib in python?

python

opencv3.0

dlib