Can't find CUDA::FAST_CUDA class

asked 2016-05-13 03:11:23 -0600

Lunarix
6 ●3

Hello, I am working with the FAST algorithm on GPU. Before, it worked with Harris and Sobel. Thats the important code I got so far. I can use the class: cv::cuda::FastFeatureDetector::create(20, 1,cv::FastFeatureDetector::TYPE_9_16);

but when I try cv::cuda::FAST_CUDA::downloadKeypoints(...); it says that it cant find class FAST_CUDA. If i look at the cudafeatures2d.hpp there is no FAST_CUDA class like said in the description. What did I do wrong? How to get the Keypoints to the CPU? Kind regards Lunarix

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answered 2016-05-13 03:25:53 -0600

Mathieu Barnachon

4678 ●18 ●53 http://www.math-barnac...

I think (hope?) you are using OpenCV version 3.x, so now, FAST in Cuda is referred as cv::cuda::FastFeatureDetector. It was previously named FAST_GPU (2.49) and also FAST_CUDA, but I can't find the right version right now.

Have a look at the different documentation here.

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Thanks for the answer. The cv::cuda::FastFeatureDetector works (it starts the FAST algorithm and saves results as keypoints) but it has no function for downloading the keypoints. How to do it then?