topic Remap function, OpenCV, speed up in Intel® Integrated Performance Primitives

Remap function, OpenCV, speed up

Viktor_S_ — Fri, 17 Apr 2015 00:15:08 GMT

Hello,

I am using OpenCV remap function.

But i need more speed up for my application.

Does OpenCV with IPP supports remap acceleration?

If IPP has fast remap function like opencv remap(src_mat, dst_mat, map_x, map_y), where i can see examples and try it?

Best regards Viktor.

Chao_Y_Intel — Fri, 17 Apr 2015 02:11:25 GMT

Viktor,

I checked the IPP ICV package. The ippiRemap is not provided there.

You can manually add the related IPP functions. Here is a few details on the function: https://software.intel.com/en-us/node/504403

An example is also included in the manuals.

Thanks,
Chao

Viktor_S_ — Fri, 17 Apr 2015 11:19:39 GMT

Chao, thank you for answer.

I will try IPP sdk.

Can you tell me OpenCV remap slower than ippiRemap?

Or there is no difference in implementation of remap algorithm?

I tried Cuda remap but download\upload from memory to GPU memory very slower and result is slower than CPU remap.

Best regards Viktor.