> For the complete documentation index, see [llms.txt](https://developer.topazlabs.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.topazlabs.com/image-models/sharpen/noise-aware-sharpen.md).

# Noise-Aware Sharpen

One-click sharpening that separates detail from noise

### Model Overview

**Noise-Aware Sharpen** is an intelligent automatic sharpening model that uses AI-driven image analysis to evaluate both image quality and scene content before applying sharpening. Unlike traditional sharpening tools that enhance detail and noise equally, the model automatically separates true image detail from digital noise and compression artifacts before intelligently restoring clarity. The result is sharper textures, facial features, fur, and fine edges while preserving the natural character of the original image.

By avoiding aggressive edge enhancement, Noise-Aware Sharpen reduces halos, oversharpening, and harsh digital artifacts commonly introduced by conventional sharpening filters. This model is especially effective for low-light, high ISO, wildlife, sports, nighttime, or grain-heavy photography where visible grain or noise is already present or intentionally part of the atmosphere of the shot. It performs best on high-resolution and production-quality imagery where preserving realism and fine detail is critical.

### Key Capabilities

* One-click intelligent sharpening with no manual tuning required
* Separates image detail from noise before sharpening
* Preserves natural texture and realistic image character
* Reduces halos, oversharpening, and sharpening artifacts

### Model Pricing

<table data-header-hidden data-full-width="false"><thead><tr><th width="119.84765625">Text</th><th width="60.390625" data-type="number">Number</th><th width="59.5390625" data-type="number"></th><th width="60.0859375" data-type="number"></th><th width="60.265625" data-type="number"></th><th width="59.94140625" data-type="number"></th><th width="59.5390625" data-type="number"></th><th width="60.34375" data-type="number"></th><th width="59.9296875" data-type="number"></th><th width="59.828125" data-type="number"></th><th width="59.5078125" data-type="number"></th></tr></thead><tbody><tr><td><code>Output MP</code></td><td>1</td><td>4</td><td>8</td><td>16</td><td>24</td><td>32</td><td>40</td><td>50</td><td>64</td><td>100</td></tr><tr><td><code>Credits</code></td><td>1</td><td>1</td><td>1</td><td>1</td><td>1</td><td>2</td><td>2</td><td>3</td><td>3</td><td>5</td></tr></tbody></table>

### **Endpoint**

<https://api.topazlabs.com/image/v1/sharpen/async>

{% hint style="info" %}
In order for "auto sharpening" to be applied, `denoiseStrength`, `opacity`, `preset`, and `sharpenStrength` must be left as null. This is recommended for batch image processing with various image subject types.
{% endhint %}

### Parameters

`model` <a class="button secondary medium">string</a><a class="button secondary medium">required</a>

Model name: <a class="button secondary medium">"Auto Sharpen"</a>

***

`inputHeight` <a class="button secondary medium">integer</a><a class="button secondary medium">optional</a><a class="button secondary medium">default="null"</a>

Input image height in pixels.

***

`inputWidth` <a class="button secondary medium">integer</a><a class="button secondary medium">optional</a><a class="button secondary medium">default="null"</a>

Input image width in pixels.

***

`outputHeight` <a class="button secondary medium">integer</a><a class="button secondary medium">optional</a><a class="button secondary medium">default="null"</a>

Output image height in pixels.

***

`outputWidth` <a class="button secondary medium">integer</a><a class="button secondary medium">optional</a><a class="button secondary medium">default="null"</a>

Output image width in pixels.

***

`grain` <a class="button secondary medium">boolean</a><a class="button secondary medium">optional</a><a class="button secondary medium">default="false"</a>

Whether to add grain to the output.

***

`grainDensity` <a class="button secondary medium">decimal</a><a class="button secondary medium">optional</a><a class="button secondary medium">default=0.5</a>

Intensity of the grain effect.

Range: <a class="button secondary medium">0.0</a> to <a class="button secondary medium">1.0</a>

***

`grainModel` <a class="button secondary medium">string</a><a class="button secondary medium">optional</a><a class="button secondary medium">default="silver"</a>

Grain model.

Possible values: <a class="button secondary medium">"silver"</a>, <a class="button secondary medium">"gaussian"</a>, <a class="button secondary medium">"grey"</a>

***

`grainSize` <a class="button secondary medium">decimal</a><a class="button secondary medium">optional</a><a class="button secondary medium">default=1.0</a>

Size of the grain particles.

Range: <a class="button secondary medium">1.0</a>to<a class="button secondary medium">5.0</a>

***

`grainStrength`  <a class="button secondary medium">decimal</a><a class="button secondary medium">optional</a><a class="button secondary medium">default=0.5</a>

Strength of the grain effect.

Range: <a class="button secondary medium">0.0</a>to<a class="button secondary medium">1.0</a>

***

`maskUri` <a class="button secondary medium">string</a><a class="button secondary medium">optional</a><a class="button secondary medium">default="null"</a>

URI for mask input.

***

`referenceUri` <a class="button secondary medium">string</a><a class="button secondary medium">optional</a><a class="button secondary medium">default="null"</a>

URI for reference image input.

***

`denioseStrength`  <a class="button secondary medium">decimal</a><a class="button secondary medium">optional</a><a class="button secondary medium">default="null"</a>

Amount of noise to remove from the image. Omit for non-noisy images.

**Recommended: omit for automatic parameter selection.**

Range: <a class="button secondary medium">0.0</a>to<a class="button secondary medium">1.0</a>

***

`opacity`  <a class="button secondary medium">decimal</a><a class="button secondary medium">optional</a><a class="button secondary medium">default="null"</a>

Amount of opacity applied to the source image.

**Recommended: omit for automatic parameter selection.**

Range: <a class="button secondary medium">0.0</a>to<a class="button secondary medium">1.0</a>

***

`preset`  <a class="button secondary medium">enum</a><a class="button secondary medium">required</a><a class="button secondary medium">default="normal"</a>

Sharpening strength. <a class="button secondary medium">"normal"</a> for highest fidelity,<a class="button secondary medium">"strong"</a> for extra, more visible sharpening.

**Recommended: omit for automatic parameter selection.**

Possible values: <a class="button secondary medium">"normal"</a>, <a class="button secondary medium">"strong"</a>

***

`sharpenStrength`  <a class="button secondary medium">decimal</a><a class="button secondary medium">optional</a><a class="button secondary medium">default="null"</a>

Amount of sharpening applied to the source image.

**Recommended: omit for automatic parameter selection.**

Range: <a class="button secondary medium">0.0</a>to<a class="button secondary medium">1.0</a>

***

`watermark` <a class="button secondary medium">boolean</a><a class="button secondary medium">optional</a><a class="button secondary medium">default="false"</a>

Whether to watermark the output.

### **Resolution Limits**

* Input: 512 MP
* Output: 512 MP

### Examples

<table data-card-size="large" data-view="cards"><thead><tr><th align="center"></th><th data-hidden data-card-target data-type="content-ref"></th><th data-hidden data-card-cover data-type="image">Cover image</th></tr></thead><tbody><tr><td align="center">Click to view</td><td><a href="https://compare.topazlabs.com/share/image?src1=https://downloads.topazlabs.com/web-assets/9335787003.jpg&#x26;src1label=Before&#x26;src2=https://downloads.topazlabs.com/web-assets/53063746-d55b-4b08-accd-e5d405837452.png&#x26;src2label=After">https://compare.topazlabs.com/share/image?src1=https://downloads.topazlabs.com/web-assets/9335787003.jpg&#x26;src1label=Before&#x26;src2=https://downloads.topazlabs.com/web-assets/53063746-d55b-4b08-accd-e5d405837452.png&#x26;src2label=After</a></td><td><a href="https://4007072434-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FJkSwaYgAsTQke14gpXAF%2Fuploads%2FDusInobqDh4fgdcuCp4U%2F9335787003_slider.jpg?alt=media&amp;token=f64d678f-461b-4b14-906c-f76fe7dcad60">9335787003_slider.jpg</a></td></tr><tr><td align="center">Click to view</td><td><a href="https://compare.topazlabs.com/share/image?src1=https://downloads.topazlabs.com/web-assets/pexels-mnannapaneni-29388749.jpg&#x26;src1label=Before&#x26;src2=https://downloads.topazlabs.com/web-assets/82d2c77f-e8a4-4a91-9762-c02b1becb517.png&#x26;src2label=After">https://compare.topazlabs.com/share/image?src1=https://downloads.topazlabs.com/web-assets/pexels-mnannapaneni-29388749.jpg&#x26;src1label=Before&#x26;src2=https://downloads.topazlabs.com/web-assets/82d2c77f-e8a4-4a91-9762-c02b1becb517.png&#x26;src2label=After</a></td><td><a href="https://4007072434-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FJkSwaYgAsTQke14gpXAF%2Fuploads%2Fh2jmN2qLR9nGlhOpTgqq%2Fpexels-mnannapaneni_slider.jpg?alt=media&amp;token=1f5947f9-7f15-4ef5-99a6-eb66e5ea104b">pexels-mnannapaneni_slider.jpg</a></td></tr><tr><td align="center">Click to view</td><td><a href="https://compare.topazlabs.com/share/image?src1=https://downloads.topazlabs.com/web-assets/parker-johnson-MOPTew6XlTA-unsplash.jpg&#x26;src1label=Before&#x26;src2=https://downloads.topazlabs.com/web-assets/eed144e0-da8b-4d8d-aa82-998f071e8d11.png&#x26;src2label=After">https://compare.topazlabs.com/share/image?src1=https://downloads.topazlabs.com/web-assets/parker-johnson-MOPTew6XlTA-unsplash.jpg&#x26;src1label=Before&#x26;src2=https://downloads.topazlabs.com/web-assets/eed144e0-da8b-4d8d-aa82-998f071e8d11.png&#x26;src2label=After</a></td><td><a href="https://4007072434-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FJkSwaYgAsTQke14gpXAF%2Fuploads%2FZ0WsbICZup7sc8cRc3nT%2Fparker-johnson_slider.jpg?alt=media&amp;token=db2d8d5a-981a-4844-bac6-bf10af56bdf4">parker-johnson_slider.jpg</a></td></tr></tbody></table>


---

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