OpenCV FAST detector

Question

In my main.cpp I have an excerpt:

Ptr fastDetector = FastFeatureDetector::create(80, true);

while (true) {
    Mat image = /         


        

Answer 1

From a quick browsing of the source code it looks like there is extensive optimization for SSE and OpenCL in fastFeatureDetector: github.com/Itseez/opencv/blob/master/modules/features2d/src/‌

SSE and OpenCL are not specific to any CPU. SSE utilizes the CPU's ability to perform a single instruction (calculation) on multiple pieces of data simultaneously. So depending on the CPU's architecture this can improve speeds as little as 2x or well beyond 4x. OpenCL can utilize the GPU which can also give major performance boosts to certain image processing operations.