Image Quality

Every VIESUS enhancement feature — automatic color, sharpening, face reconstruction, AI upscaling, background handling, and more.

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.

---

Base Enhancement

Automatic per-image color, brightness, and contrast correction scaled to each image.

Global Color Correction

Remove color casts and restore natural, balanced tones.

Shadow & Highlight Recovery

Recover detail in shadow and highlight regions.

Noise Reduction

Reduce color and luminance grain — automatic profiling or AI denoising.

Sharpening

Local sharpening for textured detail; optional AI deblur for slightly out-of-focus shots.

Face Detection

Detect faces and enable targeted portrait enhancements like red-eye and face reconstruction.

Face Reconstruction

AI reconstruction of small or compressed facial detail.

Red-Eye Removal

Detect and remove flash red-eye artifacts.

AI Artifact Removal

AI removal of JPEG compression artifacts, blocking, and ringing.

AI Super Resolution

Deep-learning upscaling up to 16× — invents detail beyond traditional interpolation.

Background Handling

AI segmentation — remove, replace, or composite portraits and product shots.

Background Blur

Computational bokeh — blur the background while keeping the subject sharp.

Grain Addition

Add subtle film grain to reduce banding in smooth gradient areas.

Local Color Correction

Fine-tune skin, sky, and vegetation zones independently.

Skin Tone Enhancement

Keep skin tones natural and fine-tune the skin color zone.

Scene-Based Enhancement

Scene-aware tuning — portrait, landscape, night, beach, snow, sunset, and more.

HDR Tonemapping

Extract gainmaps from HDR HEIC/JPEG and tonemap to SDR with seven methods.

Portrait Auto Cropping

Auto-crop portraits based on face position and configurable aspect ratio.

White Fix

Remove print-related grey speckling in light and white areas.

Adaptive Face Flash

Subtle fill-flash for underlit or backlit faces.

ICC Color Management

Control the ICC color profile assigned to output images.

Monochrome & Sepia

Convert output to black-and-white or toned monochrome (sepia).