---
title: "Denoiser Command Line"
canonical: "https://rmanwiki-26.pixar.com/space/REN26/19661811/Denoiser%20Command%20Line"
format: markdown
---
The denoiser can be run from the command line on frames that have already been rendered to disc in the condition that the required AOVs are correct  
  
usage:   
  


```
denoise_batch [-h] [-v] [-a ASYMMETRY] [-o OUTPUT] [-cf] [-f] [-j] files [files ...]
```

  
  


positional arguments:

|  |  |
| --- | --- |
| files | Image files to be denoised. Can accept a glob as input. Ex: foo.*.exr |



optional arguments:

|  |  |  |
| --- | --- | --- |
| -h, | -h, | show this help message and exit |
| -v, | --verbose | Verbose output for debugging. |
|  | --include-aovs | Include AOVs in the output image for debugging |
| -a ASYMMETRY, | --asymmetry ASYMMETRY | controls the asymmetry value, 0 is the best quality, and higher values encourage the denoiser to avoid overblurring, leading to weaker denoising. |
| -o OUTPUT, | --output OUTPUT | The output directory for the denoised images. The JSON config file(s) will also be written to this directory.    
  
If not specified, we write into a subdirectory called "denoised", from the image path. |
| -cf, | --crossframe | Do crossframe denoising |
| -f, | --flow | Whether to compute optical flow. |
| -j, | --json | If provided, use the first input file as the configuration JSON file. All other files and options are ignored. |


for example :  
$RMANTREE/bin/denoise_batch -o /path/to/directory/for/denoised/images imagename.*.exr