How to initialize cv::UMat by using data pointer?

C++
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1

I have opencl, I don’t now how to allocate memory on device and initialize cv::UMat with data pointer. I can’t find the function to do this initialization.

2

just copy data :

UMat image;
 imread(inputName, IMREAD_COLOR).copyTo(image);
4

Sorry, I’ve forgotten to write. I want to initialize UMat with data pointer on device(for example intel integrated graphics), the data pointer points to a section of data, and the memory is not shared memory but device only.

5

does any of that help?

https://docs.opencv.org/4.x/dc/d83/group__core__opencl.html

7

Yes, it helped me. Thank you!