flutter - 如何在颤动的人脸识别中眨眼

Question

我正在尝试制作一个包含人脸识别内眨眼的应用程序，但我很难找到有关眨眼的资源。是否有我可以阅读的包或资源？

标签： flutterface-recognitionblink

Answer 1

您可以在 Python 中使用 opencv 以及其他一些库来检测眨眼。

一旦你消费了视频源，

EYE_AR_THRESH = 0.3   

for rect in rects:
    # determine the facial landmarks for the face region, then
    # convert the facial landmark (x, y)-coordinates to a NumPy
    # array
    shape = predictor(gray, rect)
    shape = face_utils.shape_to_np(shape)
    # extract the left and right eye coordinates, then use the
    # coordinates to compute the eye aspect ratio for both eyes
    leftEye = shape[lStart:lEnd]
    rightEye = shape[rStart:rEnd]
    # EAR = eye aspect ratio
    leftEAR = eye_aspect_ratio(leftEye)                     # important line
    rightEAR = eye_aspect_ratio(rightEye)                   # important line
    # average the eye aspect ratio together for both eyes
    ear = (leftEAR + rightEAR) / 2.0

变量“ear”给出了眼睛的纵横比。现在，您比较它是否低于阈值。例如

if ear < EYE_AR_THRESH:
    # eye is blinked. continue with your business logic.

有关详细信息，请参阅此 链接。