My question is: What is the difference between OpenCL and GPU? For example: In the OpenCV 2.4.4 documentation, there are two items of OpenCV API Reference, respectively gpu. GPU-accelerated Computer Vision and ocl. OpenCL-accelerated Computer Vision.
The gpu module uses the CUDA api which is limited to nvidia GPUs. http://docs.opencv.org/modules/gpu/doc/introduction.html
OpenCL is a more general solution to accelerate algorithms on various devices, including GPUs(amd, nvidia), CPUs, FPGAs, etc. So its not limited to GPUs like CUDA. The device still needs to have OpenCL support though. http://docs.opencv.org/modules/ocl/doc/introduction.html
Asked: 2013-10-20 22:34:22 -0600
Seen: 385 times
Last updated: Oct 21 '13
