> 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.md).

# Image Quality

All features below apply to every VIESUS on-premise interface (CLI, PDF Enhancer, Node.js module, C/C++ SDK) and are controlled through the shared `viesusini.json` configuration file.

For exact parameter values, ranges, and mode tables, click on feature to see the corresponding parameters or see the [Parameter Reference](/configuration/parameter-reference.md).

<button type="button" class="button secondary" data-action="ask" data-query="Which VIESUS features and parameters achieve my goal? Ask me what I&#x27;m trying to improve." data-icon="gitbook-assistant">Which features do I need?</button>

***

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-cover data-type="image"></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><h4>Base Enhancement</h4></td><td>Automatic per-image color, brightness, and contrast correction scaled to each image.</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/JvqjGnjGdqsk3kQASBze">/pages/JvqjGnjGdqsk3kQASBze</a></td></tr><tr><td><h4>Global Color Correction</h4></td><td>Remove color casts and restore natural, balanced tones.</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/g1xL8FdKDIGU1p5swvLM">/pages/g1xL8FdKDIGU1p5swvLM</a></td></tr><tr><td><h4>Shadow &#x26; Highlight Recovery</h4></td><td>Recover detail in shadow and highlight regions.</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/PBvD9YH1VU9jKKYWr3Pn">/pages/PBvD9YH1VU9jKKYWr3Pn</a></td></tr><tr><td><h4>Noise Reduction</h4></td><td>Reduce color and luminance grain — automatic profiling or AI denoising.</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/14aIw2hrFF71b869yDL0">/pages/14aIw2hrFF71b869yDL0</a></td></tr><tr><td><h4>Sharpening</h4></td><td>Local sharpening for textured detail; optional AI deblur for slightly out-of-focus shots.</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/Q5YiJE6x8rqvzavC5OKq">/pages/Q5YiJE6x8rqvzavC5OKq</a></td></tr><tr><td><h4>Face Detection</h4></td><td>Detect faces and enable targeted portrait enhancements like red-eye and face reconstruction.</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/zL6tVzIb4U18r0oQBZ2D">/pages/zL6tVzIb4U18r0oQBZ2D</a></td></tr><tr><td><h4>Face Reconstruction</h4></td><td>AI reconstruction of small or compressed facial detail.</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/lIiR838RscSsqGYHEDdn">/pages/lIiR838RscSsqGYHEDdn</a></td></tr><tr><td><h4>Red-Eye Removal</h4></td><td>Detect and remove flash red-eye artifacts.</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/Nt5fpiiAJhxOKjLnl6zV">/pages/Nt5fpiiAJhxOKjLnl6zV</a></td></tr><tr><td><h4>AI Artifact Removal</h4></td><td>AI removal of JPEG compression artifacts, blocking, and ringing.</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/Ns1fAktWQXSySxYvkfKM">/pages/Ns1fAktWQXSySxYvkfKM</a></td></tr><tr><td><h4>AI Super Resolution</h4></td><td>Deep-learning upscaling up to 16× — invents detail beyond traditional interpolation.</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/DcrYBlvmoAS9i01b3Blh">/pages/DcrYBlvmoAS9i01b3Blh</a></td></tr><tr><td><h4>Background Handling</h4></td><td>AI segmentation — remove, replace, or composite portraits and product shots.</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/GqKSz0mDGOrFA8yfHtYa">/pages/GqKSz0mDGOrFA8yfHtYa</a></td></tr><tr><td><h4>Background Blur</h4></td><td>Computational bokeh — blur the background while keeping the subject sharp.</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/YihtRB8SqqViYxKr2hDM">/pages/YihtRB8SqqViYxKr2hDM</a></td></tr><tr><td><h4>Grain Addition</h4></td><td>Add subtle film grain to reduce banding in smooth gradient areas.</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/4vJbdyKDZNCa8fDdJ0Tk">/pages/4vJbdyKDZNCa8fDdJ0Tk</a></td></tr><tr><td><h4>Local Color Correction</h4></td><td>Fine-tune skin, sky, and vegetation zones independently.</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/ZTiMdZuJ6uJsG2Um9ga3">/pages/ZTiMdZuJ6uJsG2Um9ga3</a></td></tr><tr><td><h4>Skin Tone Enhancement</h4></td><td>Keep skin tones natural and fine-tune the skin color zone.</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/XgfZXDGQPgao20OFp9iu">/pages/XgfZXDGQPgao20OFp9iu</a></td></tr><tr><td><h4>Scene-Based Enhancement</h4></td><td>Scene-aware tuning — portrait, landscape, night, beach, snow, sunset, and more.</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/nGGFNJ96jlemzu6AVo7b">/pages/nGGFNJ96jlemzu6AVo7b</a></td></tr><tr><td><h4>HDR Tonemapping</h4></td><td>Extract gainmaps from HDR HEIC/JPEG and tonemap to SDR with seven methods.</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/JHPIX3efhL8sQDBhsChH">/pages/JHPIX3efhL8sQDBhsChH</a></td></tr><tr><td><h4>Portrait Auto Cropping</h4></td><td>Auto-crop portraits based on face position and configurable aspect ratio.</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/lrYFJ4WmOD1ehGaHxCLZ">/pages/lrYFJ4WmOD1ehGaHxCLZ</a></td></tr><tr><td><h4>White Fix</h4></td><td>Remove print-related grey speckling in light and white areas.</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/NaUpE9hNn3Xxwnu3nfWM">/pages/NaUpE9hNn3Xxwnu3nfWM</a></td></tr><tr><td><h4>Adaptive Face Flash</h4></td><td>Subtle fill-flash for underlit or backlit faces.</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/6x3AsIljrmM8rTWn4UEl">/pages/6x3AsIljrmM8rTWn4UEl</a></td></tr><tr><td><h4>ICC Color Management</h4></td><td>Control the ICC color profile assigned to output images.</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/MZlglb3OPKzx601Elttm">/pages/MZlglb3OPKzx601Elttm</a></td></tr><tr><td><h4>Monochrome &#x26; Sepia</h4></td><td>Convert output to black-and-white or toned monochrome (sepia).</td><td><a href="/files/E4JjOos7P7724jjCYkyn">/files/E4JjOos7P7724jjCYkyn</a></td><td><a href="/pages/U0vnlK7fGNiSsxegbvFX">/pages/U0vnlK7fGNiSsxegbvFX</a></td></tr></tbody></table>


---

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