Hello,
When I save my images, they look like to have a lot of blue component.
Do OpenCV use BGR or RGB for saving or processing images ?
How to switch from one to another ?
Thank you, cjacquel
Opencv uses BGR format to store data in memory
When image is save using imwrite then channels are in good order relatively to file extension (jpg, png, ....)
Mat img=imread("fruits.jpg",IMREAD_COLOR);
cout<<img.at<vec3b>(0,0);
imwrite("Fruitsopencv.png",img);results 13,62,130 check in your favourite image editor : Blue=13 Green = 62 Red=130
In previous code i don't use cvtcolor to change bgr to rgb : when you use opencv function everything is done internally.
Asked: Feb 28 '18
Seen: 1,108 times
Last updated: Feb 28 '18