Python&；Opencv：单击鼠标时实时获取RGB值

我写了一个代码，当你们用鼠标点击屏幕的时候，读取一个图像并获得带有点击像素坐标的rgb值。工作代码如下

import cv2
import numpy as np


def mouseRGB(event,x,y,flags,param):
    if event == cv2.EVENT_LBUTTONDOWN: #checks mouse left button down condition
        colorsB = image[y,x,0]
        colorsG = image[y,x,1]
        colorsR = image[y,x,2]
        colors = image[y,x]
        print("Red: ",colorsR)
        print("Green: ",colorsG)
        print("Blue: ",colorsB)
        print("BRG Format: ",colors)
        print("Coordinates of pixel: X: ",x,"Y: ",y)

# Read an image, a window and bind the function to window
image = cv2.imread("image.jpg")
cv2.namedWindow('mouseRGB')
cv2.setMouseCallback('mouseRGB',mouseRGB)

#Do until esc pressed
while(1):
    cv2.imshow('mouseRGB',image)
    if cv2.waitKey(20) & 0xFF == 27:
        break
#if esc pressed, finish.
cv2.destroyAllWindows()

但我想要的是；我不想看图像，我想在屏幕上看到实时相机流；当我点击某处时，我想随时看到点击像素的rgb值和坐标

---

如何编辑代码？

要捕获视频，请添加捕获对象

capture = cv2.VideoCapture(0)

0

是我的网络摄像头的摄像头编号，但如果您有第二个usb摄像头，则可能是

1

然后在

while

循环中，通过添加

ret, frame = capture.read()

您可以使用与处理任何图像完全相同的方式来处理帧

最后，完成后不要忘记释放捕获对象

capture.release()
cv2.destroyAllWindows()

完整的代码列表

import cv2
import numpy as np


def mouseRGB(event,x,y,flags,param):
    if event == cv2.EVENT_LBUTTONDOWN: #checks mouse left button down condition
        colorsB = frame[y,x,0]
        colorsG = frame[y,x,1]
        colorsR = frame[y,x,2]
        colors = frame[y,x]
        print("Red: ",colorsR)
        print("Green: ",colorsG)
        print("Blue: ",colorsB)
        print("BRG Format: ",colors)
        print("Coordinates of pixel: X: ",x,"Y: ",y)


cv2.namedWindow('mouseRGB')
cv2.setMouseCallback('mouseRGB',mouseRGB)

capture = cv2.VideoCapture(0)

while(True):

    ret, frame = capture.read()

    cv2.imshow('mouseRGB', frame)

    if cv2.waitKey(1) == 27:
        break

capture.release()
cv2.destroyAllWindows()

---

cv2具有从相机读取的功能-您应该在cv2的任何基础教程中看到它。cv2还具有在图像上绘制图形和文本的功能。我知道这些线条，但我没有按照我的要求进行编辑