# How to apply denoise to the Whole image after a render region--- **URL:** \ **Category:** Help Required\ **Created:** [November 25, 2016, 10:19am UTC](https://forums.chaos.com/t/how-to-apply-denoise-to-the-whole-image-after-a-render-region/135397 "2016-11-25T10:19:21Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![gabanz](https://avatars.discourse-cdn.com/v4/letter/g/e0b2c6/32.png) [@gabanz](https://forums.chaos.com/u/gabanz)\ **Post date:** [November 25, 2016, 10:19am UTC](https://forums.chaos.com/t/how-to-apply-denoise-to-the-whole-image-after-a-render-region/135397/1 "2016-11-25T10:19:21Z")
Good morning… probably the answer of my question is very obvious, but I’m really struggling in finding it… XD Let’s say I’ve completed an image and I’ve applied a full denoise. Then, I have ro re-render a small region of the image beacuse of some requested changes. at the end of the region render, the denoise , applies only to the region selected, and the rest of the image previously rendered is not denoised anymore. There is a way to “burn” the denoise to the image… or I perhaps I could apply the denoise to the whole image? Thanks in advance, I hope my question is clear 😃 Gabriella ---
**Author:** ![kdt\_1](https://avatars.discourse-cdn.com/v4/letter/k/2acd7d/32.png) [@kdt\_1](https://forums.chaos.com/u/kdt_1)\ **Post date:** [November 25, 2016, 1:18pm UTC](https://forums.chaos.com/t/how-to-apply-denoise-to-the-whole-image-after-a-render-region/135397/2 "2016-11-25T13:18:39Z")
Maybe uncheck: Render Setup\>System\>Frame Buffer\>Clear VFB in between renders? I think it would solve your problem. ---
**Author:** ![gabanz](https://avatars.discourse-cdn.com/v4/letter/g/e0b2c6/32.png) [@gabanz](https://forums.chaos.com/u/gabanz)\ **Post date:** [November 25, 2016, 1:25pm UTC](https://forums.chaos.com/t/how-to-apply-denoise-to-the-whole-image-after-a-render-region/135397/3 "2016-11-25T13:25:13Z")
It is already unchecked 😕 Does it happens only to me? 😕 ---
**Author:** ![Cheesemsmsm](https://avatars.discourse-cdn.com/v4/letter/c/47e85d/32.png) [@Cheesemsmsm](https://forums.chaos.com/u/Cheesemsmsm)\ **Post date:** [November 25, 2016, 5:10pm UTC](https://forums.chaos.com/t/how-to-apply-denoise-to-the-whole-image-after-a-render-region/135397/4 "2016-11-25T17:10:49Z")
> use Max’s region > when it’s done, turn off region > ‘resume last render’ > wait until it starts rendering the first pass > stop it That’s it ---
**Author:** ![gabanz](https://avatars.discourse-cdn.com/v4/letter/g/e0b2c6/32.png) [@gabanz](https://forums.chaos.com/u/gabanz)\ **Post date:** [November 26, 2016, 3:41pm UTC](https://forums.chaos.com/t/how-to-apply-denoise-to-the-whole-image-after-a-render-region/135397/5 "2016-11-26T15:41:28Z")
Thanks!! This works… but I thought it was possible to do it into the Corona Buffer… the corona region render is very handy… > [@Cheesemsmsm](#): > > > use Max’s region > > when it’s done, turn off region > > ‘resume last render’ > > wait until it starts rendering the first pass > > stop it ---
**Author:** ![gabanz](https://avatars.discourse-cdn.com/v4/letter/g/e0b2c6/32.png) [@gabanz](https://forums.chaos.com/u/gabanz)\ **Post date:** [November 29, 2016, 8:25am UTC](https://forums.chaos.com/t/how-to-apply-denoise-to-the-whole-image-after-a-render-region/135397/6 "2016-11-29T08:25:51Z")
So using max region is the only way? We can’t apply denoise to the whole render using the region render in corona VFB? ---
**Author:** ![maru](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/maru/32/15975_2.png) [@maru](https://forums.chaos.com/u/maru)\ **Post date:** [November 30, 2016, 1:52pm UTC](https://forums.chaos.com/t/how-to-apply-denoise-to-the-whole-image-after-a-render-region/135397/7 "2016-11-30T13:52:39Z")
Denoising relies on some additional render elements, which need to be rendered, but are invisible to the user. My guess is that when you are using Corona’s regions, you are limiting those special elements to the selected area only, so there is no data how to denoise the rest of the image. But if using 3ds Max regions works, then I suppose this should be improved. ---
**Author:** ![maru](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/maru/32/15975_2.png) [@maru](https://forums.chaos.com/u/maru)\ **Post date:** [December 7, 2016, 1:43pm UTC](https://forums.chaos.com/t/how-to-apply-denoise-to-the-whole-image-after-a-render-region/135397/8 "2016-12-07T13:43:29Z")
Might be related to this: [Renderer for architectural visualization - Corona | Chaos](https://corona-renderer.com/bugs/view.php?id=2290) So I would suggest checking this in the next daily build.