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https://git.roussel.pro/telecom-paris/pact.git
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98 lines
3.2 KiB
Python
98 lines
3.2 KiB
Python
import cv2
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import mediapipe as mp
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import numpy as np
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class HandDetector():
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def __init__(self):
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self.mp_drawing = mp.solutions.drawing_utils
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self.mp_drawing_styles = mp.solutions.drawing_styles
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self.mp_hands = mp.solutions.hands
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self.cap = cv2.VideoCapture(0)
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self.hands = self.mp_hands.Hands(
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model_complexity=0,
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min_detection_confidence=0.5,
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min_tracking_confidence=0.5)
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#Paramètres
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self.BUFFER_LENGTH = 30
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self.DETECTION_THRESHOLD = 3/4
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self.resultBuffer = []
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def reset(self):
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self.resultBuffer = []
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def reconnaissancePouce(self,handLandmarks):
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etatDuPouce=["neutre","thumbs_down","thumbs_up"]
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i=0
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j=0
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for cpt in range (0,4):
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V1=[handLandmarks[(4*cpt)+6][0]-handLandmarks[(4*cpt)+5][0],handLandmarks[(4*cpt)+6][1]-handLandmarks[(4*cpt)+5][1]]
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V2=[handLandmarks[(4*cpt)+8][0]-handLandmarks[(4*cpt)+6][0],handLandmarks[(4*cpt)+8][1]-handLandmarks[(4*cpt)+6][1]]
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j=np.dot(V1,V2)
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if (j>0.005):
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return etatDuPouce[0]
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V1=[handLandmarks[4][0]-handLandmarks[1][0],handLandmarks[4][1]-handLandmarks[1][1]]
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V2=[handLandmarks[2][0]-handLandmarks[1][0],handLandmarks[2][1]-handLandmarks[1][1]]
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if((np.dot(V1,V2))>0 and (handLandmarks[4][1]>handLandmarks[2][1])):
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i=1
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elif(np.dot(V1,V2)>0 and handLandmarks[4][1]<handLandmarks[2][1]):
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i=2
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return etatDuPouce[i]
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def detect(self):
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if self.cap.isOpened():
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success, image = self.cap.read()
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if not success:
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print("Ignoring empty camera frame.")
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# If loading a video, use 'break' instead of 'continue'.
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return False
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# To improve performance, optionally mark the image as not writeable to
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# pass by reference.
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image.flags.writeable = False
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results = self.hands.process(image)
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# print(results)
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if results.multi_hand_landmarks:
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handsPositions = []
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for hand_landmarks in results.multi_hand_landmarks:
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handLandmarks = []
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# Fill list with x and y positions of each landmark
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for landmarks in hand_landmarks.landmark:
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handLandmarks.append([landmarks.x, landmarks.y])
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#On ajoute la position de chaque mains a une liste
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handsPositions.append(self.reconnaissancePouce(handLandmarks))
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#On calcule le résultat suivant la position des deux mains
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if(len(handsPositions) == 2):
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if(handsPositions[0] == handsPositions[1]):
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thumbState = handsPositions[0]
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elif(handsPositions[0] == "neutre"):
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thumbState = handsPositions[1]
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elif(handsPositions[1] == "neutre"):
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thumbState = handsPositions[0]
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else:
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thumbState = "neutre"
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else:
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thumbState = handsPositions[0]
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self.resultBuffer.append(thumbState)
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if(len(self.resultBuffer) > self.BUFFER_LENGTH):
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self.resultBuffer.pop(0)
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thumbsUpCount = sum(map(lambda x : x == "thumbs_up", self.resultBuffer))
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thumbsDownCount = sum(map(lambda x : x == "thumbs_down", self.resultBuffer))
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if(thumbsUpCount > self.DETECTION_THRESHOLD * self.BUFFER_LENGTH):
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result = "thumbs_up"
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elif(thumbsDownCount > self.DETECTION_THRESHOLD * self.BUFFER_LENGTH):
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result = "thumbs_down"
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else:
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result = False
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if(thumbState != "neutre"):
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return thumbState, handLandmarks[9], np.linalg.norm(np.array(handLandmarks[9]) - np.array(handLandmarks[0])), result
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return False
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