以上代码包括人脸的长宽吗

以上代码并没有直接计算人脸的长宽，而是通过计算眼睛和嘴巴之间的距离来估计人脸大小。如果需要计算人脸的长宽，可以在检测到人脸后，使用`face.right() - face.left()`和`face.bottom() - face.top()`来分别计算人脸的宽度和高度。例如： ```python import cv2 import dlib detector = dlib.get_frontal_face_detector() predictor = dlib.shape_predictor('shape_predictor_68_face_landmarks.dat') img = cv2.imread('test.jpg') faces = detector(img) for face in faces: landmarks = predictor(img, face) eye_dist = landmarks.part(45).x - landmarks.part(36).x mouth_dist = landmarks.part(54).x - landmarks.part(48).x face_size = eye_dist + mouth_dist # 计算人脸的长宽 face_width = face.right() - face.left() face_height = face.bottom() - face.top() cv2.rectangle(img, (face.left(), face.top()), (face.right(), face.bottom()), (0, 255, 0), 2) for i in range(68): cv2.circle(img, (landmarks.part(i).x, landmarks.part(i).y), 2, (0, 0, 255), -1) cv2.putText(img, f"Face size: {face_size}", (10, 30), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 0, 255), 2) cv2.putText(img, f"Face width: {face_width}", (10, 60), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 0, 255), 2) cv2.putText(img, f"Face height: {face_height}", (10, 90), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 0, 255), 2) cv2.imshow('image', img) cv2.waitKey(0) cv2.destroyAllWindows() ``` 在这个示例中，我们计算了人