如何读取视频文件以在 openCV 中使用?
我想从“avi 文件”读取视频文件,然后逐帧输入它以在 openCV 中处理它。 我怎样才能做到这一点? openCV中有相关的函数吗?我应该使用视频阅读框架吗?
有哪些好的读取视频文件的框架?
I want to read a video file from an "avi file" and then enter it frame by frame to process it in openCV.
How can I do that?
Are there functions for that in openCV? Should I use a video reading framwork?
What are good frameworks for reading video files?
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处理视频序列
从视频序列中捕获帧
初始化从摄像机的捕获:
初始化从文件的捕获:
要同时从多个摄像机获取图像,请首先从每个摄像机抓取图像。抓取完成后检索捕获的图像。
释放捕获源:
注意设备捕获的图像是由捕获函数分配/释放的。没有必要明确地释放它。
Working with video sequences
Capturing a frame from a video sequence
Initializing capture from a camera:
Initializing capture from a file:
To obtain images from several cameras simultaneously, first grab an image from each camera. Retrieve the captured images after the grabbing is complete.
Releasing the capture source:
Note that the image captured by the device is allocated/released by the capture function. There is no need to release it explicitly.