GPU Convolutions: OpenCV GPU and LibJacket – Part 2

This is a response to my earlier post comparing OpenCV's gpu::convolve() and LibJacket's jkt::conv2() convolution functions, at various image and kernel sizes. That post generated a lot of traffic, most notably from the OpenCV developer community. Taking note of this, it seems that the folks at Willow Garage have re-vamped their GPU convolutions and posted their own set of benchmarks using their updated routines. While the benchmarks I ran highlighted some performance issues in OpenCV - which the Read more [...]

OpenCV vs. LibJacket: GPU Sobel Filtering

Update: LibJacket has been renamed to  ArrayFire. In response to a comment on a previous post about integrating LibJacket into an OpenCV project, below is just a simple FYI performance comparison of OpenCV's GPU Sobel filter versus LibJacket's conv2 convolution filter (with a sobel kernel)... This is an evolutionary post, so be sure to scroll all the way down to see more comparisons... Update (10/24/2011): Round 2     Test system: [via /proc/cpuinfo]: Intel(R) Core(TM) i7 CPU Read more [...]