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import cv2 |
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import mediapipe as mp |
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import numpy as np |
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from mediapipe.framework.formats import landmark_pb2 |
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class FaceMeshVisualizer: |
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def __init__(self, |
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forehead_edge=False, |
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upface_only=False, |
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draw_eye=True, |
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draw_head=False, |
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draw_iris=True, |
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draw_eyebrow=True, |
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draw_mouse=True, |
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draw_nose=True, |
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draw_pupil=True |
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): |
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self.mp_drawing = mp.solutions.drawing_utils |
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mp_face_mesh = mp.solutions.face_mesh |
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self.mp_face_mesh = mp_face_mesh |
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self.forehead_edge = forehead_edge |
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DrawingSpec = mp.solutions.drawing_styles.DrawingSpec |
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f_thick = 2 |
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f_rad = 1 |
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right_iris_draw = DrawingSpec(color=(10, 200, 250), thickness=f_thick, circle_radius=f_rad) |
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right_eye_draw = DrawingSpec(color=(10, 200, 180), thickness=f_thick, circle_radius=f_rad) |
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right_eyebrow_draw = DrawingSpec(color=(10, 220, 180), thickness=f_thick, circle_radius=f_rad) |
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left_iris_draw = DrawingSpec(color=(250, 200, 10), thickness=f_thick, circle_radius=f_rad) |
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left_eye_draw = DrawingSpec(color=(180, 200, 10), thickness=f_thick, circle_radius=f_rad) |
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left_eyebrow_draw = DrawingSpec(color=(180, 220, 10), thickness=f_thick, circle_radius=f_rad) |
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head_draw = DrawingSpec(color=(10, 200, 10), thickness=f_thick, circle_radius=f_rad) |
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nose_draw = DrawingSpec(color=(200, 200, 200), thickness=f_thick, circle_radius=f_rad) |
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mouth_draw_obl = DrawingSpec(color=(10, 180, 20), thickness=f_thick, circle_radius=f_rad) |
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mouth_draw_obr = DrawingSpec(color=(20, 10, 180), thickness=f_thick, circle_radius=f_rad) |
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mouth_draw_ibl = DrawingSpec(color=(100, 100, 30), thickness=f_thick, circle_radius=f_rad) |
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mouth_draw_ibr = DrawingSpec(color=(100, 150, 50), thickness=f_thick, circle_radius=f_rad) |
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mouth_draw_otl = DrawingSpec(color=(20, 80, 100), thickness=f_thick, circle_radius=f_rad) |
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mouth_draw_otr = DrawingSpec(color=(80, 100, 20), thickness=f_thick, circle_radius=f_rad) |
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mouth_draw_itl = DrawingSpec(color=(120, 100, 200), thickness=f_thick, circle_radius=f_rad) |
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mouth_draw_itr = DrawingSpec(color=(150 ,120, 100), thickness=f_thick, circle_radius=f_rad) |
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FACEMESH_LIPS_OUTER_BOTTOM_LEFT = [(61,146),(146,91),(91,181),(181,84),(84,17)] |
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FACEMESH_LIPS_OUTER_BOTTOM_RIGHT = [(17,314),(314,405),(405,321),(321,375),(375,291)] |
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FACEMESH_LIPS_INNER_BOTTOM_LEFT = [(78,95),(95,88),(88,178),(178,87),(87,14)] |
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FACEMESH_LIPS_INNER_BOTTOM_RIGHT = [(14,317),(317,402),(402,318),(318,324),(324,308)] |
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FACEMESH_LIPS_OUTER_TOP_LEFT = [(61,185),(185,40),(40,39),(39,37),(37,0)] |
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FACEMESH_LIPS_OUTER_TOP_RIGHT = [(0,267),(267,269),(269,270),(270,409),(409,291)] |
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FACEMESH_LIPS_INNER_TOP_LEFT = [(78,191),(191,80),(80,81),(81,82),(82,13)] |
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FACEMESH_LIPS_INNER_TOP_RIGHT = [(13,312),(312,311),(311,310),(310,415),(415,308)] |
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FACEMESH_CUSTOM_FACE_OVAL = [(176, 149), (150, 136), (356, 454), (58, 132), (152, 148), (361, 288), (251, 389), (132, 93), (389, 356), (400, 377), (136, 172), (377, 152), (323, 361), (172, 58), (454, 323), (365, 379), (379, 378), (148, 176), (93, 234), (397, 365), (149, 150), (288, 397), (234, 127), (378, 400), (127, 162), (162, 21)] |
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face_connection_spec = {} |
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if self.forehead_edge: |
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for edge in mp_face_mesh.FACEMESH_FACE_OVAL: |
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face_connection_spec[edge] = head_draw |
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else: |
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if draw_head: |
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FACEMESH_CUSTOM_FACE_OVAL_sorted = sorted(FACEMESH_CUSTOM_FACE_OVAL) |
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if upface_only: |
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for edge in [FACEMESH_CUSTOM_FACE_OVAL_sorted[edge_idx] for edge_idx in [1,2,9,12,13,16,22,25]]: |
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face_connection_spec[edge] = head_draw |
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else: |
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for edge in FACEMESH_CUSTOM_FACE_OVAL_sorted: |
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face_connection_spec[edge] = head_draw |
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if draw_eye: |
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for edge in mp_face_mesh.FACEMESH_LEFT_EYE: |
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face_connection_spec[edge] = left_eye_draw |
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for edge in mp_face_mesh.FACEMESH_RIGHT_EYE: |
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face_connection_spec[edge] = right_eye_draw |
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if draw_eyebrow: |
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for edge in mp_face_mesh.FACEMESH_LEFT_EYEBROW: |
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face_connection_spec[edge] = left_eyebrow_draw |
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for edge in mp_face_mesh.FACEMESH_RIGHT_EYEBROW: |
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face_connection_spec[edge] = right_eyebrow_draw |
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if draw_iris: |
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for edge in mp_face_mesh.FACEMESH_LEFT_IRIS: |
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face_connection_spec[edge] = left_iris_draw |
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for edge in mp_face_mesh.FACEMESH_RIGHT_IRIS: |
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face_connection_spec[edge] = right_iris_draw |
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if draw_mouse: |
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for edge in FACEMESH_LIPS_OUTER_BOTTOM_LEFT: |
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face_connection_spec[edge] = mouth_draw_obl |
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for edge in FACEMESH_LIPS_OUTER_BOTTOM_RIGHT: |
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face_connection_spec[edge] = mouth_draw_obr |
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for edge in FACEMESH_LIPS_INNER_BOTTOM_LEFT: |
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face_connection_spec[edge] = mouth_draw_ibl |
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for edge in FACEMESH_LIPS_INNER_BOTTOM_RIGHT: |
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face_connection_spec[edge] = mouth_draw_ibr |
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for edge in FACEMESH_LIPS_OUTER_TOP_LEFT: |
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face_connection_spec[edge] = mouth_draw_otl |
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for edge in FACEMESH_LIPS_OUTER_TOP_RIGHT: |
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face_connection_spec[edge] = mouth_draw_otr |
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for edge in FACEMESH_LIPS_INNER_TOP_LEFT: |
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face_connection_spec[edge] = mouth_draw_itl |
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for edge in FACEMESH_LIPS_INNER_TOP_RIGHT: |
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face_connection_spec[edge] = mouth_draw_itr |
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self.face_connection_spec = face_connection_spec |
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self.pupil_landmark_spec = {468: right_iris_draw, 473: left_iris_draw} |
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self.nose_landmark_spec = {4: nose_draw} |
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self.draw_pupil = draw_pupil |
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self.draw_nose = draw_nose |
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def draw_points(self, image, landmark_list, drawing_spec, halfwidth: int = 2): |
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"""We have a custom function to draw the pupils because the mp.draw_landmarks method requires a parameter for all |
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landmarks. Until our PR is merged into mediapipe, we need this separate method.""" |
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if len(image.shape) != 3: |
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raise ValueError("Input image must be H,W,C.") |
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image_rows, image_cols, image_channels = image.shape |
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if image_channels != 3: |
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raise ValueError('Input image must contain three channel bgr data.') |
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for idx, landmark in enumerate(landmark_list.landmark): |
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if idx not in drawing_spec: |
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continue |
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if ( |
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(landmark.HasField('visibility') and landmark.visibility < 0.9) or |
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(landmark.HasField('presence') and landmark.presence < 0.5) |
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): |
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continue |
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if landmark.x >= 1.0 or landmark.x < 0 or landmark.y >= 1.0 or landmark.y < 0: |
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continue |
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image_x = int(image_cols * landmark.x) |
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image_y = int(image_rows * landmark.y) |
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draw_color = drawing_spec[idx].color |
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image[image_y - halfwidth : image_y + halfwidth, image_x - halfwidth : image_x + halfwidth, :] = draw_color |
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def draw_landmarks(self, image_size, keypoints, normed=False): |
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ini_size = [512, 512] |
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image = np.zeros([ini_size[1], ini_size[0], 3], dtype=np.uint8) |
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if keypoints is not None: |
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new_landmarks = landmark_pb2.NormalizedLandmarkList() |
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for i in range(keypoints.shape[0]): |
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landmark = new_landmarks.landmark.add() |
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if normed: |
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landmark.x = keypoints[i, 0] |
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landmark.y = keypoints[i, 1] |
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else: |
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landmark.x = keypoints[i, 0] / image_size[0] |
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landmark.y = keypoints[i, 1] / image_size[1] |
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landmark.z = 1.0 |
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self.mp_drawing.draw_landmarks( |
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image=image, |
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landmark_list=new_landmarks, |
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connections=self.face_connection_spec.keys(), |
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landmark_drawing_spec=None, |
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connection_drawing_spec=self.face_connection_spec |
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) |
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if self.draw_pupil: |
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self.draw_points(image, new_landmarks, self.pupil_landmark_spec, 3) |
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if self.draw_nose: |
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self.draw_points(image, new_landmarks, self.nose_landmark_spec, 3) |
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image = cv2.resize(image, (image_size[0], image_size[1])) |
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return image |
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