MediaPipe로 구현한 손으로 그림 그리기

MediaPipe를 사용하여 손으로 그림 그리는 것을 구현해보았습니다. 

2023. 3 .2 최초작성

유튜브 영상  https://youtu.be/S_Op3Qy4e8Q?feature=shared 

 

# 원본 코드 https://google.github.io/mediapipe/solutions/hands.html """The 21 hand landmarks.""" # 손가락 위치 정의 참고 https://google.github.io/mediapipe/images/mobile/hand_landmarks.png # # WRIST = 0 # THUMB_CMC = 1 # THUMB_MCP = 2 # THUMB_IP = 3 # THUMB_TIP = 4    엄지 # INDEX_FINGER_MCP = 5 # INDEX_FINGER_PIP = 6 # INDEX_FINGER_DIP = 7 # INDEX_FINGER_TIP = 8  검지 # MIDDLE_FINGER_MCP = 9 # MIDDLE_FINGER_PIP = 10 # MIDDLE_FINGER_DIP = 11 # MIDDLE_FINGER_TIP = 12  중지 # RING_FINGER_MCP = 13 # RING_FINGER_PIP = 14 # RING_FINGER_DIP = 15 # RING_FINGER_TIP = 16  약지 # PINKY_MCP = 17 # PINKY_PIP = 18 # PINKY_DIP = 19 # PINKY_TIP = 20  새끼 # 필요한 라이브러리 # pip install opencv-python mediapipe pillow numpy import cv2  import mediapipe as mp   from PIL import ImageFont, ImageDraw, Image import numpy as np       def draw_ball_location(image, locations):     for i in range(len(locations)-1):         if locations[0] is None or locations[1] is None:             continue         cv2.line(image, tuple(locations[i]), tuple(locations[i+1]), (0, 255, 255), 3)     return image list_ball_location = [] history_ball_locations = [] mp_drawing = mp.solutions.drawing_utils mp_hands = mp.solutions.hands mp_drawing_styles = mp.solutions.drawing_styles cap = cv2.VideoCapture(0) text = "" with mp_hands.Hands(     min_detection_confidence=0.5,     min_tracking_confidence=0.5) as hands:     while cap.isOpened():     success, image = cap.read()     if not success:       print("Ignoring empty camera frame.")       continue     # Flip the image horizontally for a later selfie-view display, and convert     # the BGR image to RGB.     image = cv2.cvtColor(cv2.flip(image, 1), cv2.COLOR_BGR2RGB)     # To improve performance, optionally mark the image as not writeable to     # pass by reference.     image.flags.writeable = False     results = hands.process(image)     # Draw the hand annotations on the image.     image.flags.writeable = True     image = cv2.cvtColor(image, cv2.COLOR_RGB2BGR)     image_height, image_width, _ = image.shape     if results.multi_hand_landmarks:       for hand_landmarks in results.multi_hand_landmarks:                 # 엄지를 제외한 나머지 4개 손가락의 마디 위치 관계를 확인하여 플래그 변수를 설정합니다. 손가락을 일자로 편 상태인지 확인합니다.         thumb_finger_state = 0         if hand_landmarks.landmark[mp_hands.HandLandmark.THUMB_CMC].y * image_height > hand_landmarks.landmark[mp_hands.HandLandmark.THUMB_MCP].y * image_height:           if hand_landmarks.landmark[mp_hands.HandLandmark.THUMB_MCP].y * image_height > hand_landmarks.landmark[mp_hands.HandLandmark.THUMB_IP].y * image_height:             if hand_landmarks.landmark[mp_hands.HandLandmark.THUMB_IP].y * image_height > hand_landmarks.landmark[mp_hands.HandLandmark.THUMB_TIP].y * image_height:               thumb_finger_state = 1         index_finger_state = 0         if hand_landmarks.landmark[mp_hands.HandLandmark.INDEX_FINGER_MCP].y * image_height > hand_landmarks.landmark[mp_hands.HandLandmark.INDEX_FINGER_PIP].y * image_height:           if hand_landmarks.landmark[mp_hands.HandLandmark.INDEX_FINGER_PIP].y * image_height > hand_landmarks.landmark[mp_hands.HandLandmark.INDEX_FINGER_DIP].y * image_height:             if hand_landmarks.landmark[mp_hands.HandLandmark.INDEX_FINGER_DIP].y * image_height > hand_landmarks.landmark[mp_hands.HandLandmark.INDEX_FINGER_TIP].y * image_height:               index_finger_state = 1         middle_finger_state = 0         if hand_landmarks.landmark[mp_hands.HandLandmark.MIDDLE_FINGER_MCP].y * image_height > hand_landmarks.landmark[mp_hands.HandLandmark.MIDDLE_FINGER_PIP].y * image_height:           if hand_landmarks.landmark[mp_hands.HandLandmark.MIDDLE_FINGER_PIP].y * image_height > hand_landmarks.landmark[mp_hands.HandLandmark.MIDDLE_FINGER_DIP].y * image_height:             if hand_landmarks.landmark[mp_hands.HandLandmark.MIDDLE_FINGER_DIP].y * image_height > hand_landmarks.landmark[mp_hands.HandLandmark.MIDDLE_FINGER_TIP].y * image_height:               middle_finger_state = 1         ring_finger_state = 0         if hand_landmarks.landmark[mp_hands.HandLandmark.RING_FINGER_MCP].y * image_height > hand_landmarks.landmark[mp_hands.HandLandmark.RING_FINGER_PIP].y * image_height:           if hand_landmarks.landmark[mp_hands.HandLandmark.RING_FINGER_PIP].y * image_height > hand_landmarks.landmark[mp_hands.HandLandmark.RING_FINGER_DIP].y * image_height:             if hand_landmarks.landmark[mp_hands.HandLandmark.RING_FINGER_DIP].y * image_height > hand_landmarks.landmark[mp_hands.HandLandmark.RING_FINGER_TIP].y * image_height:               ring_finger_state = 1         pinky_finger_state = 0         if hand_landmarks.landmark[mp_hands.HandLandmark.PINKY_MCP].y * image_height > hand_landmarks.landmark[mp_hands.HandLandmark.PINKY_PIP].y * image_height:           if hand_landmarks.landmark[mp_hands.HandLandmark.PINKY_PIP].y * image_height > hand_landmarks.landmark[mp_hands.HandLandmark.PINKY_DIP].y * image_height:             if hand_landmarks.landmark[mp_hands.HandLandmark.PINKY_DIP].y * image_height > hand_landmarks.landmark[mp_hands.HandLandmark.PINKY_TIP].y * image_height:               pinky_finger_state = 1         use_pen = False         if hand_landmarks.landmark[mp_hands.HandLandmark.THUMB_TIP].y * image_height > hand_landmarks.landmark[mp_hands.HandLandmark.INDEX_FINGER_DIP].y * image_height:           if hand_landmarks.landmark[mp_hands.HandLandmark.MIDDLE_FINGER_TIP].y * image_height > hand_landmarks.landmark[mp_hands.HandLandmark.INDEX_FINGER_DIP].y * image_height:             if hand_landmarks.landmark[mp_hands.HandLandmark.RING_FINGER_TIP].y * image_height > hand_landmarks.landmark[mp_hands.HandLandmark.INDEX_FINGER_DIP].y * image_height:               if hand_landmarks.landmark[mp_hands.HandLandmark.PINKY_TIP].y * image_height > hand_landmarks.landmark[mp_hands.HandLandmark.INDEX_FINGER_DIP].y * image_height:                 if index_finger_state:                   use_pen = True                 use_eraser = False         if thumb_finger_state == 1 and index_finger_state == 1 and middle_finger_state == 1 and ring_finger_state == 1 and pinky_finger_state == 1:           use_eraser = True         use_move = False         if   index_finger_state == 0 and middle_finger_state == 0 and ring_finger_state == 0 and pinky_finger_state == 0:           use_move = True         image = Image.fromarray(image)         draw = ImageDraw.Draw(image)                 text = ""         if use_pen == True:           text = "펜"         elif use_eraser == True:           text = "지우개"                 elif use_move == True:           text = "이동"                 if text == '펜':             x = int(hand_landmarks.landmark[mp_hands.HandLandmark.INDEX_FINGER_TIP].x * image_width)             y = int(hand_landmarks.landmark[mp_hands.HandLandmark.INDEX_FINGER_TIP].y * image_height)             list_ball_location.append((x,y))                             elif text == '이동':           history_ball_locations.append(list_ball_location.copy())           list_ball_location.clear()         elif text == '지우개':                         history_ball_locations.clear()             list_ball_location.clear()         font = ImageFont.truetype("fonts/gulim.ttc", 80)         w, h = font.getsize(text)         x = 50         y = 50         draw.rectangle((x, y, x + w, y + h), fill='black')         draw.text((x, y),  text, font=font, fill=(255, 255, 255))         image = np.array(image)         # 손가락 뼈대를 그려줍니다.         mp_drawing.draw_landmarks(             image,             hand_landmarks,             mp_hands.HAND_CONNECTIONS,             mp_drawing_styles.get_default_hand_landmarks_style(),             mp_drawing_styles.get_default_hand_connections_style())     image = draw_ball_location(image, list_ball_location)     for ball_locations in history_ball_locations:       image = draw_ball_location(image, ball_locations)     cv2.imshow('MediaPipe Hands', image)     if cv2.waitKey(5) & 0xFF == 27:       break cap.release()