GpuMat to device data type conversion

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Hi all,

I wonder to know that is there a way to convert GpuMat to CUDA data type and vice versa? Say, I have GpuMat(512, 512, CV_32FC2) and I want to convert it to float2* which has 512*512 elements. The reason is I want to write my own kernel outside cv::gpu modules. It seems that the smart pointer could work in this case.

Best regards,

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answered Oct 25 '12

Vladislav Vinogradov

4775 ●4 ●24 ●62

GpuMat d_mat(512, 512, CV_32FC2);
float2* data = d_mat.ptr<float>();
size_t step = d_mat.step;
// kernel
__global__ void func(float2* data, size_t step)
{
    int x = ...;
    int y = ...;
    float2* row_y = (float2*)((char*)data + y * step);
    float2 val = row_y[x];
}