> For the complete documentation index, see [llms.txt](https://docs.viesus.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.viesus.com/features/features/face-reconstruction.md).

# Face Reconstruction

AI-based reconstruction of facial features. Most effective for smaller faces in the frame where JPEG compression or low resolution has degraded facial detail.

{% hint style="info" %}
**Requires:** [Face Detection](/features/features/face-detection.md) — enabled automatically when this feature is active.
{% endhint %}

## Example

{% columns %}
{% column %}
**Before**

<figure><img src="https://919968377-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FG3eQlcnlDKtn9yl3mxsx%2Fuploads%2Fgit-blob-2aac38d3a6989f640b75c2aeecf11934ec13a3c3%2Fplaceholder.svg?alt=media" alt="Before — Face Reconstruction"><figcaption></figcaption></figure>
{% endcolumn %}

{% column %}
**After**

<figure><img src="https://919968377-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FG3eQlcnlDKtn9yl3mxsx%2Fuploads%2Fgit-blob-2aac38d3a6989f640b75c2aeecf11934ec13a3c3%2Fplaceholder.svg?alt=media" alt="After — Face Reconstruction"><figcaption></figcaption></figure>
{% endcolumn %}
{% endcolumns %}

## Parameters

<table><thead><tr><th width="123.199951171875">Parameter</th><th width="100">Section</th><th width="95">Value</th><th width="97.39990234375">Default</th><th>Description</th></tr></thead><tbody><tr><td><code>FRmode</code></td><td><code>Config</code></td><td>0 – 3</td><td>1</td><td>Mode selection (see below)</td></tr><tr><td><code>frstrength</code></td><td><code>Gpars</code></td><td>0.0 – 1.0</td><td>0.3</td><td>Reconstruction strength for smaller faces</td></tr><tr><td><code>sfstrength</code></td><td><code>Gpars</code></td><td>0.0 – 1.0</td><td>0.25</td><td>Small-face reconstruction importance (0.25 – 0.50 recommended)</td></tr><tr><td><code>eyestrength</code></td><td><code>Gpars</code></td><td>0.0 – 1.0</td><td>0.5</td><td>Eye detail emphasis</td></tr></tbody></table>

## Modes

| Value           | Description                            |
| --------------- | -------------------------------------- |
| **0** — Off     | No face reconstruction                 |
| **1** — Default | Standard reconstruction model          |
| **2** — Mixed   | New default for AI upscaling workflows |
| **3** — Fast    | Slight quality trade-off for speed     |

{% hint style="success" %}
**Recommended:** Mode 1 for general use; switch to Mode 2 when combining with [AI upscaling](/features/features/ai-super-resolution.md). Keep `sfstrength` between 0.25 and 0.50.
{% endhint %}


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