Topic: Adaptive noise reduction pixelates chroma a lot in 1.32

After upgrading from 1.31 to 1.32 I noticed that setting "Reduce Color noise" in Adaptive noise reduction above zero makes picture look like it has something like YV12 colorspace, where chroma has 1/4 of resolution compared to luma.
Here is the example:
Source image: http://img842.imageshack.us/img842/4952/flowerred.jpg
Reduce Color Noise=5 in 1.31 and same value in 1.32:
http://img716.imageshack.us/img716/8599/131mq.pnghttp://img835.imageshack.us/img835/3424/132x.png
I usually use color noise reduction to fix pixelation and artifacts caused by jpeg compression, but now it only increases it.

2

Re: Adaptive noise reduction pixelates chroma a lot in 1.32

Yes, you are absolutely right. Thank you for reporting this issue - I hadn't noticed it myself. I have made a fix which you will get in the latest beta download.

Michael Vinther

> software developer <