基于python的opencv识别，代码没错，但运行报错，如图

import cv2
from cvzone.HandTrackingModule import HandDetector

a=cv2.VideoCapture(0)
b=HandDetector(detectionCon=0.8,maxHands=2)

while True:
success,img=a.read()
hands,img=a.findHands(img)
cv2.imshow("image",img)
cv2.waitKey(1)

别的先不说，先把你的所有路径全部改成英文再说，opencv的中文路径出现问题情况很多。
剩下的报错信息没截图完整，看不出来是哪里的问题，看报错应该是你没有设置HandDetector（）中的模型文件参数

试试修改这句：
a=cv2.VideoCapture(0)
为a=cv2.VideoCapture(0,cv2.CAP_DSHOW)
参考：
https://blog.csdn.net/hpsunvan/article/details/102600248

如果有帮助，请点击采纳。

报错写的很清楚了, 路径不对

你看下你那个报错，问题就是你设置的那个文件路径没有设置正确。你检查下路径即可

import cv2
from cvzone.HandTrackingModule import HandDetector
from time import sleep
import numpy as np
import cvzone
from pynput.keyboard import Controller
 
cap = cv2.VideoCapture(0)
cap.set(3, 1280)
cap.set(4, 720)
 
detector = HandDetector(detectionCon=0.8)
keys = [["Q", "W", "E", "R", "T", "Y", "U", "I", "O", "P"],
        ["A", "S", "D", "F", "G", "H", "J", "K", "L", ";"],
        ["Z", "X", "C", "V", "B", "N", "M", ",", ".", "/"]]
finalText = ""
 
keyboard = Controller()
 
 
def drawAll(img, buttonList):
    for button in buttonList:
        x, y = button.pos
        w, h = button.size
        cvzone.cornerRect(img, (button.pos[0], button.pos[1], button.size[0], button.size[1]),
                          20, rt=0)
        cv2.rectangle(img, button.pos, (x + w, y + h), (255, 0, 255), cv2.FILLED)
        cv2.putText(img, button.text, (x + 20, y + 65),
                    cv2.FONT_HERSHEY_PLAIN, 4, (255, 255, 255), 4)
    return img
 
 
#
# def drawAll(img, buttonList):
#     imgNew = np.zeros_like(img, np.uint8)
#     for button in buttonList:
#         x, y = button.pos
#         cvzone.cornerRect(imgNew, (button.pos[0], button.pos[1], button.size[0], button.size[1]),
#                           20, rt=0)
#         cv2.rectangle(imgNew, button.pos, (x + button.size[0], y + button.size[1]),
#                       (255, 0, 255), cv2.FILLED)
#         cv2.putText(imgNew, button.text, (x + 40, y + 60),
#                     cv2.FONT_HERSHEY_PLAIN, 2, (255, 255, 255), 3)
#
#     out = img.copy()
#     alpha = 0.5
#     mask = imgNew.astype(bool)
#     print(mask.shape)
#     out[mask] = cv2.addWeighted(img, alpha, imgNew, 1 - alpha, 0)[mask]
#     return out
 
 
class Button():
    def __init__(self, pos, text, size=[85, 85]):
        self.pos = pos
        self.size = size
        self.text = text
 
 
buttonList = []
for i in range(len(keys)):
    for j, key in enumerate(keys[i]):
        buttonList.append(Button([100 * j + 50, 100 * i + 50], key))
 
while True:
    success, img = cap.read()
    img = detector.findHands(img)
    lmList, bboxInfo = detector.findPosition(img)
    img = drawAll(img, buttonList)
 
    if lmList:
        for button in buttonList:
            x, y = button.pos
            w, h = button.size
 
            if x < lmList[8][0] < x + w and y < lmList[8][1] < y + h:
                cv2.rectangle(img, (x - 5, y - 5), (x + w + 5, y + h + 5), (175, 0, 175), cv2.FILLED)
                cv2.putText(img, button.text, (x + 20, y + 65),
                            cv2.FONT_HERSHEY_PLAIN, 4, (255, 255, 255), 4)
                l, _, _ = detector.findDistance(8, 12, img, draw=False)
                print(l)
 
                ## when clicked
                if l < 30:
                    keyboard.press(button.text)
                    cv2.rectangle(img, button.pos, (x + w, y + h), (0, 255, 0), cv2.FILLED)
                    cv2.putText(img, button.text, (x + 20, y + 65),
                                cv2.FONT_HERSHEY_PLAIN, 4, (255, 255, 255), 4)
                    finalText += button.text
                    sleep(0.15)
 
    cv2.rectangle(img, (50, 350), (700, 450), (175, 0, 175), cv2.FILLED)
    cv2.putText(img, finalText, (60, 430),
                cv2.FONT_HERSHEY_PLAIN, 5, (255, 255, 255), 5)
 
    cv2.imshow("Image", img)
    cv2.waitKey(1)

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