So i write a code to save cv mat data as binary.
Save mat to file opencv.
To save image to the local file system use cv2 imwrite function of opencv python library.
At the same time this memory is disposed when qimage goes out of the scope.
Due to this opencv for video containers supports only the avi extension its first version.
Therefore this tutorial is prepared to explain how to save images and videos to a file with opencv c.
However opencv is mainly a computer vision library not a video stream codec and write one.
Load modify and save an image.
Getting started with images.
Cv filestorage is not so fast to save cv mat of large size because it writes datas as ascii.
Mainly there are 2 functions.
Imwrite filename mat this method accepts the following parameters filename a string variable representing the path where to save the file.
To view or set the default version for mat files go to the home tab and in the environment section click preferences.
Open source computer vision.
Therefore the developers tried to keep this part as simple as possible.
Save and load cv mat as a binary file.
This is memory management issue.
When you create matrix from piece of memory copy of this memory is not created.
It requires opencv 2 0 or later.
Save an image to a file.
Mat a mat object representing the image to be written.
Just copy the whole functions in binarycvmat cpp to your code or write header.
Most common persisting method is to save the image or the video to a file.
Following program is an example to write an image using java program using opencv library.
Check answer about converting between qimage and cv mat there is a better link in comment but for some reason page is not working so i didn t provided this link here.
Select matlab general mat files and then choose a mat file save format option.
A direct limitation of this is that you cannot save a video file larger than 2 gb.
