> For the complete documentation index, see [llms.txt](https://support.aperty.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.aperty.ai/how-to-use-aperty/four-key-tools-categories/essential-tools/noise-reduction.md).

# Noise Reduction

<figure><img src="/files/Zsb94E7jKAum5G6W9Axj" alt=""><figcaption></figcaption></figure>

The **Noise Reduction** tool in Aperty helps reduce unwanted grain or noise in your portrait, especially in images taken at high ISO or low-light conditions. This tool ensures that details remain smooth while minimizing distracting noise without sacrificing image quality.

* **Luminosity**: Reduces noise in the brightness (luminance) channel of the image, which often appears as grain or roughness in the image, especially in areas of solid color like skin. Increasing this value smooths out the noise in the lighter and darker areas, resulting in a cleaner, more polished portrait. Be cautious not to overuse it, as too much luminosity reduction can make the image look overly soft and lose fine details.
* **Color**: Reduces noise in the color channels, which appears as random color speckles or blotches across the image, often visible in skin tones or smooth areas. Increasing this slider smooths out these color artifacts, keeping the overall color tones more even and natural without affecting the sharpness of the portrait.
* **Boost**: Amplifies the effect of both the luminosity and color noise reduction sliders. When Boost is increased, it intensifies the smoothing process, further reducing noise but with a greater risk of losing fine details. This is useful when working with very noisy images but should be applied carefully to avoid overly softening key areas like the eyes or hair.

{% hint style="info" %}
Start by adjusting **Luminance** and **Color** noise reduction to remove grain and color speckles for portrait editing. Use **Boost** sparingly to preserve facial details and avoid making the portrait look too smooth or artificial. Focus on reducing noise in the background while keeping key features, like the eyes and lips, sharp.
{% endhint %}


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://support.aperty.ai/how-to-use-aperty/four-key-tools-categories/essential-tools/noise-reduction.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.