Rotate YUV 4:2:2 video

Rotate YUV 4:2:2 video

Imagen de marco.lopes@tridelity.de
marco.lopes@tridelity.de
Vie, 30/11/2007 - 01:33

Hello All,

Im trying to rotate a yuv video 90 degrees but its not working as i expected
Im using ippiRotate 16u C1R, the rotate works but the colors are wrong.
Thank you in advance,

Marco

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Imagen de marco.lopes@tridelity.de
marco.lopes@tridelity.de
Lun, 03/12/2007 - 02:56

Hello,

Again, the function I'm using is:
ippiRotate_16u_C1R

I'm starting to consider, converting it to RGB, rotating and then converting back to YUV.

This sound very inefficient, there must be another way.

Thanks

Superior
Imagen de marco.lopes@tridelity.de
marco.lopes@tridelity.de
Lun, 03/12/2007 - 05:13

Hi All,

I decided to go for the conversion first solution.

I convert it first using:
ippiYCbCr422ToBGR_8u_C2C3R

Then I use the rotate, everything looks fine.

Still I would like to know your opinion on how to skip the conversion step.

Thank you.

Superior
Imagen de vladimir-dudnik (Intel)
vladimir-dudnik (Intel)
Jue, 01/05/2008 - 12:33

Hello,


Please refer to IPP documentation on details of function naming convention. We use C1 for one-channels (gray) images and we use 16u for 16-bit per channel image, meaning that pixel value is in range from 0 to 65535.


We do not provide function which implement rotation on 4:2:2 sampled data so you need conversion step.


Regards,
Vladimir

Superior

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