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I have Continuous GpuMat of size (10304,10304) and, of CV_8UC1 format at global memory of device. Now I want to pass that GpuMat to one function which requires a "float array on device". I have no idea what the efficient way is to do that conversion?

I have Continuous GpuMat of size (10304,10304) and, of CV_8UC1 format at global memory of device. Now I want to pass that GpuMat to one function which requires a "float array on device". I have no idea what the efficient way is to do that conversion?conversion. any suggestion?