cv2.error: OpenCV(4.5.2) error: (-5:Bad argument) in function 'cvtColor'

Question

这是我的代码，我遇到了问题。请问有什么解决办法吗？我尝试做一个屏幕录像机：

import numpy as np
import cv2
import pyautogui

codec = cv2.VideoWriter_fourcc(*"XVID")
out = cv2.VideoWriter("Recorded.avi", codec, 60, (1366,768))
cv2.namedWindow("Recording", cv2.WINDOW_NORMAL)
cv2.resizeWindow("Recording", 480, 270)

while True:
     img = pyautogui.screenshot #capturing screenshot
     frame = np.array(img) # converting the image into numpy array representation
     frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB) # converting the BGR image into RGB image
     out.write(frame) # writing the RBG image to file
     cv2.imshow('Recording', frame) # display screen/frame being recorded
     if cv2.waitKey(1) == ord('q'): # Wait for the user to press 'q' key to stop the recording
          break

 out.release() # closing the video file
 cv2.destroyAllWindows() # destroying the recording window

这里的问题：

回溯（最后一次调用）：文件“C:\Users\mhmdj\PycharmProjects\learn\main.py”，第 13 行，位于 frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB) # 将BGR图像转换为RGB图像 cv2.error: OpenCV(4.5.2) 错误: (-5:Bad argument) in function 'cvtColor'

过载解析失败：

不支持 src 数据类型 = 17 预期参数 Ptrcv::UMat 'src'

Answer 1

您可以尝试使用 cv2.imread() 而不是 np.array() 加载图像，看看它是否有效，因为示例使用此方法：

img = cv2.imread(imagePath)
gray = cv2.cvtColor(img, cv2.COLOR_BGR2RGB)

cv2.error: OpenCV(4.5.2) error: (-5:Bad argument) in function 'cvtColor'

cv2.error: OpenCV(4.5.2) error: (-5:Bad argument) in function 'cvtColor'

python

opencv

numpy

screen-resolution

pyautogui