OpenCV：从std ::中读取图像？ [英] OpenCV: reading image from std::in?

问题描述

是否有某种方法使用OpenCV的 imread 函数从 std :: in ？

Is there some way of using OpenCV's imread function to read from std::in?

Mat imread( const string& filename, int flags=1 );

函数仅接受文件名，但stdin有一些魔术值？

Function accepts only filename, but is there some "magic" value for stdin?

推荐答案

OpenCV提供了在缓冲区而不是文件名上工作的imdecode函数。您需要先将stdin读入缓冲区。

OpenCV provides imdecode functions that work on buffers instead of filename. You would need to read stdin into a buffer first.

http://opencv.willowgarage.com/documentation/cpp/reading_and_writing_images_and_video.html

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