How to do fisheye correction with mmapi

[fire9953]

Hello，

My L4t info:
R35 (release), REVISION: 4.1, GCID: 33958178, BOARD: t186ref, EABI: aarch64, DATE: Tue Aug 1 19:57:35 UTC 2023

In my project i use a 120D camera，after capture the image, i use OpenCv to do the fisheye correction.

My question is: can i do this correction with MutiMedia api, argus api?
I haven’t find any samples, can anyone give me some help, thanks !

[DaneLLL]

Hi,
We have the functions in VPI. Please check the document and see if you can apply it to your use-case:

VPI - Vision Programming Interface: Lens Distortion Correction

[fire9953]

Ok, i will make a try, thanks !

And does VPI make better performance than cv::fisheye::projectPoints ?

[AastaLLL]

Hi

Support cv::fisheye::projectPoints use CPU for calculation.
But VPI can use CPU/GPU/VIC for acceleration.

You can find the performance table (for the remap algorithm) below:
https://docs.nvidia.com/vpi/2.4/algo_remap.html#algo_remap_perf

Thanks.

[fire9953]

Ok, thanks !