【发布时间】：2022-01-16 20:14:50
【问题描述】：
所以我正在开发一个 OpenCV 项目，该项目将检测是否发生了某个手势。这部分有效。
我还想让它等待几秒钟，这样它就不会计算意外移动。但是，当我使用time.sleep() 或开始时间结束时间方法时，它会冻结我的程序并始终执行程序并停止遵循 if 条件，或者更糟的是它根本不会执行 if 语句。
这是我使用的代码 sn-p。顺便说一句，我已经尝试过time.sleep() 它只会冻结程序并始终播放剪辑，无论它是否遵循我的 if 语句。
有没有办法解决这个问题？
import cv2
import time
import os
import HandTrackingModule as htm
from playsound import playsound
wCam, hCam = 1920, 1080
cap = cv2.VideoCapture(2)
cap.set(3, wCam)
cap.set(4, hCam)
frame = cap.read()
pTime = 0
detector = htm.handDetector(detectionCon=1)
Player1 = []
Player2 = []
while 1 > 0:
success, img = cap.read()
img = detector.findHands(img)
lmlist = detector.findPosition(img, handNo=0, draw=False)
if len(lmlist) != 0:
Player1 = []
Player2 = []
if (lmlist[4][1] < lmlist[3][1] and lmlist[8][2] < lmlist[6][2] and lmlist[20][2] < lmlist[18][2] and lmlist[12][2] > lmlist[10][2] and lmlist[16][2] > lmlist[14][2]) == False:
StartTime = time.time()
if lmlist[4][1] < lmlist[3][1] and lmlist[8][2] < lmlist[6][2] and lmlist[20][2] < lmlist[18][2] and lmlist[12][2] > lmlist[10][2] and lmlist[16][2] > lmlist[14][2]:
EndTime = time.time()
Eyetime = EndTime - StartTime
if Eyetime > 5:
Player1.append("hello")
playsound(r'C:\Users\haris\Documents\GitHub\Haz3-jolt\Pong_with_opencv\venv\notw.mp3')
cTime = time.time()
fps = 1 / (cTime-pTime)
pTime = cTime
cv2.putText(img, f'FPS: {int(fps)}',(400,70), cv2.FONT_HERSHEY_COMPLEX, 3, (255, 0, 0), 3)
cv2.imshow("Image", img)
cv2.waitKey(1)
我还有一个名为 handtrackingmodule 的额外脚本导入。
import cv2
import mediapipe as mp
import time
class handDetector():
def __init__(self, mode=False, maxHands=2, detectionCon=0.5, trackCon=0.5):
self.mode = mode
self.maxHands = maxHands
self.detectionCon = detectionCon
self.trackCon = trackCon
self.mpHands = mp.solutions.hands
self.hands = self.mpHands.Hands(self.mode, self.maxHands, self.detectionCon, self.trackCon)
self.mpDraw = mp.solutions.drawing_utils
def findHands(self, img, draw=True):
imgRGB = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)
self.results = self.hands.process(imgRGB)
#print(results.multi_hand_landmarks)
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)
return img
def findPosition(self, img, handNo=0, draw=True):
lmList = []
if self.results.multi_hand_landmarks:
myHand = self.results.multi_hand_landmarks[handNo]
for id, lm in enumerate(myHand.landmark):
# print(id, lm)
h, w, c = img.shape
cx, cy = int(lm.x * w), int(lm.y * h)
# print(id, cx, cy)
lmList.append([id, cx, cy])
if draw:
cv2.circle(img, (cx, cy), 15, (255, 0, 255), cv2.FILLED)
return lmList
def Marks(self,frame):
myHands=[]
frameRGB=cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
results=self.hands.process(frameRGB)
if results.multi_hand_landmarks != None:
for handLandMarks in results.multi_hand_landmarks:
myHand=[]
for landMark in handLandMarks.landmark:
myHand.append((int(landMark.x*width), int(landMark.y*height)))
myHands.append(myHand)
return myHands
width=1920
height=1080
def main():
pTime = 0
cTime = 0
cap = cv2.VideoCapture(2)
detector = handDetector()
while True:
success, img = cap.read()
img = detector.findHands(img)
lmList = detector.findPosition(img)
if len(lmList) != 0:
print(lmList[4])
cTime = time.time()
fps = 1 / (cTime - pTime)
pTime = cTime
cv2.putText(img, str(int(fps)), (10, 70), cv2.FONT_HERSHEY_PLAIN, 3, (255, 0, 255), 3)
cv2.imshow("Image", img)
cv2.waitKey(1)
if __name__ == "__main__":
main()
【问题讨论】：
-
只用cv2.waitkey(1)？你不是已经在用了吗？有用吗？
-
非常抱歉，我忘了添加我使用的附加脚本。现在正在编辑。
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请修剪您的代码，以便更容易找到您的问题。请按照以下指南创建minimal reproducible example。