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HandTrakingModule.py
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import cv2
import mediapipe as mp
import time
import numpy as np
import math
cap = cv2.VideoCapture(0)
# 손에 관련된 클래스
class HandDetector():
def __init__(self, mode = False, maxHands = 2, modelC=1, detectionCon=0.5, trackCon=0.5):
self.mode = mode
self.maxHands = maxHands
self.modelC = modelC
self.detectionCon = detectionCon
self.trackCon = trackCon
self.mpHands = mp.solutions.hands
# 새 버전에서 modelC가 추가 됨, 오류 수정 https://github.com/google/mediapipe/issues/2818
self.hands = self.mpHands.Hands(self.mode, self.maxHands, self.modelC, self.detectionCon, self.trackCon)
self.mpDraw = mp.solutions.drawing_utils
self.tipIds = [4, 8, 12, 16, 20] # 엄지, 검지, 중지, 약지, 소지 끝 부분 id
# 손을 찾아서 해당 위치를 그림 그려주는 함수
def findHands(self, img, draw=True):
imgRGB = cv2.cvtColor(img, cv2.COLOR_BGR2RGB) # BGR을 RGB 순으로 바꾼다
self.results = self.hands.process(imgRGB)
# print(results.multi_hand_landmarks) # 손의 위치 좌표 표시
# 손의 위치를 계산하여 표시
if self.results.multi_hand_landmarks:
for handLms in self.results.multi_hand_landmarks:
if draw:
self.mpDraw.draw_landmarks(img, handLms, self.mpHands.HAND_CONNECTIONS) # 손의 좌표를 점으로 표시
return img # return이 있어야 제대로 실행된다.
# 손의 위치를 연산해서 그림 그려주는 함수
def findpostion(self, img, handNo=0, draw=True, blue=255, green=255, red=255):
xList = []
yList = []
bbox = []
self.lmList = []
if self.results.multi_hand_landmarks:
myHand = self.results.multi_hand_landmarks[handNo]
for id, lm, in enumerate(myHand.landmark):
# print(id, lm) # 손 위치 id를 x, y, z를 통해 출력
h, w, c = img.shape
cx, cy = int(lm.x*w), int(lm.y*h)
xList.append(cx)
yList.append(cy)
# print(id, cx, cy)
self.lmList.append([id, cx, cy])
if draw: # 위치를 그려줌
cv2.circle(img, (cx, cy), 5, (blue, green, red), cv2.FILLED)
xmin, xmax = min(xList), max(xList)
ymin, ymax = min(yList), max(yList)
bbox = xmin, ymin, xmax, ymax
if draw:
cv2.rectangle(img, (xmin - 20, ymin - 20), (xmax + 20, ymax + 20), (0, 255, 0), 2)
return self.lmList, bbox
def fingersUp(self):
fingers = []
# Thumb
if self.lmList[self.tipIds[0]][1] > self.lmList[self.tipIds[0] -1][1]:
fingers.append(1)
else:
fingers.append(0)
# Fingers
for id in range(1, 5):
if self.lmList[self.tipIds[id]][2] < self.lmList[self.tipIds[id] -2][2]:
fingers.append(1)
else:
fingers.append(0)
# totalFingers = fingers.count(1)
return fingers
def findDistance(self, p1, p2, img, draw=True, r=15, t=3):
x1, y1 = self.lmList[p1][1:]
x2, y2 = self.lmList[p2][1:]
cx, cy = (x1 + x2) // 2, (y1 + y2) // 2
if draw:
cv2.line(img, (x1, y1), (x2, y2), (255, 0, 255), t)
cv2.circle(img, (x1, y1), r, (255, 0, 255), cv2.FILLED)
cv2.circle(img, (x2, y2), r, (255, 0, 255), cv2.FILLED)
cv2.circle(img, (cx, cy), r, (0, 0, 255), cv2.FILLED)
length = math.hypot(x2 - x1, y2 - y1)
return length, img, [x1, y1, x2, y2, cx, cy]
# 현재 프레임을 보여주는 클래스
class FPS():
def __init__(self, cTime=0, pTime=0):
self.cTime = cTime
self.pTime = pTime
def get_fps(self, img, blue=255, green=255, red=255):
# 프레임 연산
self.cTime = time.time()
fps = 1/(self.cTime-self.pTime)
self.pTime = self.cTime
# 프레임 표시
cv2.putText(img, str(int(fps)), (10, 70), cv2.FONT_HERSHEY_PLAIN, 3,
(blue, green, red), 3)
def main():
fps = FPS()
detector = HandDetector()
while True:
success, img = cap.read()
detector.findHands(img)
fps.get_fps(img, blue=100, green=0, red=0)
lmList = detector.findpostion(img, blue=150, green=200, red=0, draw=False)
if len(lmList) !=0:
print(lmList[9]) # 찾을 번호를 입력하면 해당 번호의 위치를 출력
if not success: # 카메라가 없으면 종료
break
cv2.imshow("camera", img)
if cv2.waitKey(1) == ord('q'): # 사용자가 q를 입력한 경우 종료
break
if __name__ == '__main__':
main()
cap.release()
cv2.destroyAllWindows()