Created
June 16, 2021 13:30
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Handtracking with opencv and mediapipe
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import cv2 | |
import mediapipe as mp | |
class HandGesture(): | |
def __init__(self, mode=False, maxNumHand=2, detectionCon =0.5, trackingCon = 0.5): | |
self.mode = mode | |
self.maxNumHand = maxNumHand | |
self.detectionCon = detectionCon | |
self.trackingCon = trackingCon | |
self.mpHands = mp.solutions.hands | |
self.hands = self.mpHands.Hands(self.mode, self.maxNumHand, self.detectionCon, self.trackingCon) | |
self.mpDraw = mp.solutions.drawing_utils | |
def drawHand(self, img, draw=True): | |
rgbIMG = cv2.cvtColor(img, cv2.COLOR_BGR2RGB) | |
self.results = self.hands.process(rgbIMG) | |
# print(results.multi_hand_landmarks) | |
if self.results.multi_hand_landmarks: | |
for hand in self.results.multi_hand_landmarks: | |
if draw: | |
self.mpDraw.draw_landmarks(img, hand, self.mpHands.HAND_CONNECTIONS) | |
return img | |
def handPosition(self, img, whichHand=0, draw=True): | |
landmarkList = [] | |
if self.results.multi_hand_landmarks: | |
hand = self.results.multi_hand_landmarks[whichHand] | |
for id, landmark in enumerate(hand.landmark): | |
h, w, c = img.shape | |
cx, cy = int(landmark.x * w), int(landmark.y * h) | |
landmarkList.append([id, cx, cy]) | |
if draw: | |
cv2.circle(img, (cx, cy), 10, (124, 252, 0), cv2.FILLED) | |
return landmarkList | |
cap = cv2.VideoCapture(0) | |
handtrckingdetector = HandGesture() | |
while True: | |
success, img = cap.read() | |
img = handtrckingdetector.drawHand(img) | |
# landmarkList = handtrckingdetector.handPosition(img) | |
cv2.imshow("Image", img) | |
if cv2.waitKey(1) & 0xFF == ord('q'): | |
break |
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