OpenCV imwrite（）不保存图像 [英] OpenCV imwrite() not saving image

问题描述

 
 
 code> cv :: imwrite（/ Users / nickporter / Desktop / Gray_Image.jpg，cvImage）; 
  

任何人都能看到为什么这可能无法保存？

有时，OpenCV在保存到 JPG 图像时遇到问题，请尝试保存到 BMP 代替：

  cv :: imwrite（/ Users / nickporter / Desktop / Gray_Image.bmp， cvImage）; 
  

此外，在此之前，请确保您将 cvImage 有效。您可以先显示图片进行检查：

  namedWindow（image，WINDOW_AUTOSIZE）; 
 imshow（image，cvImage）; 
 waitKey（30）; 
  

I am trying to save an image from OpenCV on my mac and I am using the following code and so far it has not been working.

cv::imwrite("/Users/nickporter/Desktop/Gray_Image.jpg", cvImage);

Can anyone see why this might not be saving?

解决方案

OpenCV does have problems in saving to JPG images sometimes, try to save to BMP instead:

cv::imwrite("/Users/nickporter/Desktop/Gray_Image.bmp", cvImage);

Also, before this, make sure you image cvImage is valid. You can check it by showing the image first:

namedWindow("image", WINDOW_AUTOSIZE);
imshow("image", cvImage);
waitKey(30);

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