Kostas's profile - activity

Sorry, incomplete description. I have already deactivated BUILD_ZLIB in cmake ui, however in the visual studio solution

Remove zlib dependency Dear cv Forum I am compiling opencv with cmake and visual studio and I was wondering if there is

Thanks Eduardo, I also observed the same, there is a new QR implementation in 3.2, while in 3.1 the SVD implementation is internally used. I am using SVD now in 3.2 and the computation time returned back to "normal". For some reason the new QR implementation is slow.

Dear OpenCV community

I decided to change to 3.2 but realized that in this version the cv::solve with DECOMP_QR is much slower than in 3.1. I observed increase even from 400ms to 12sec for large matrices.

I am using the standard configuration of OpenCV, with OpenCl and AVX2, on an i7 4770, without GPU . My question: is there a difference in using OpenCV 3.2 in comparison to 3.1? I could imagine there are some changes in the optimization of the code, but do I need to activate/deactivate something?

Finally, is there currently an optimal configuration for modern Intel i7 to gain maximum performance (without CUDA)?

Cheers

Hi all

I am trying to use the ThinPlateSplineShapeTransformer and I am not sure how to use the method estimateTransformation. I create the two keypoint vectors with the correspongin points (using my own method, not any of keypoint detectors) but I am not sure how to initialize the std::vector< DMatch > &matches. Anyone who has been using DMatch?

Thanks