> ## Documentation Index
> Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# NoiseModelEnum

NoiseModelEnum enumeration constants are used to describe the type of noise on an image.

```
typedef enum {
 NM_WhiteNoise,
 NM_CorrelatedNoise
} NoiseModelEnum;
```

## Elements

| Name                  | Description                                                                                                            |
| --------------------- | ---------------------------------------------------------------------------------------------------------------------- |
| NM\\\_CorrelatedNoise | Strongly correlated noise. This mode may be useful, for example, for the JPEG photos with high compression settings.   |
| NM\\\_WhiteNoise      | White noise. This mode may be useful, for example, for uncompressed images with ISO less then 800, for reduced images. |

## Used in

[IImageDocument::RemoveNoise](/fine-reader/engine/api-reference/image-related-objects/imagedocument/removenoise-method)