Hello everybody, i’m pretty new in CUDA and i would like to know if it’s possible to access the RGB component into a cuda kernel ?
In fact i have to make a sobel filter on a video on CPU and on GPU. On CPU i use openCV to access the RGB but i would like to send
the image into the GPU ,get RGB and process sobel filter.
I know there is a sample on the SDK but i don’t understand a line External Image
So i just need to get RGB values of an image into the kernel.
Thanks. External Image
Hey! How to pass your data to kernel is completely up to you. If you have, for example a 1D array, lets say unsigned char *, that contains the RGB data of an image you would allocate the needed amount of device memory and copy the RGB contents to the device.
Have a look at the functions cudaMalloc() and cudaMemcpy().
In fact i have to process lots of frames so i need to reduce transfer time between gpu and cpu, so that’s why i need ton send the full frame and then process into it …
I’m sorry I’m just in a bad position, I must finish that project for this fryday and I’m completely lost … External Image
