# Korken Mosaic (Flutter MVP)

Prototype Flutter app for generating bottle-cap mosaics from imported images.

## Features

- Import target image from gallery (`image_picker`)
- Resolution controls:
  - explicit grid width/height
  - or auto grid by approximate cap size in source image pixels
- Cap palette management:
  - list caps with name + color
  - add color via picker and/or manual hex
  - **Deckel fotografieren**: capture a cap with camera and auto-detect its color from a robust center-circle sample (reduced background contamination)
  - review detected color preview, edit name + hex, then save as a normal palette entry
  - remove caps
- Mosaic preview + bill of materials counts per cap color

## Style controls (new)

User-facing controls are integrated directly in the main screen:

- **Fidelity ↔ Structure** slider
  - fidelity side keeps direct color faithfulness
  - structure side applies edge-aware smoothing for cleaner large forms
- **Dithering strength** slider
  - scales Floyd–Steinberg error diffusion
- **Edge emphasis** slider
  - boosts edge readability during color assignment
- **Color tolerance / variation** slider
  - allows controlled variation among similar cap colors in flatter regions

## Presets

Three presets are provided and selectable via segmented buttons:

- **Realistisch**
- **Ausgewogen**
- **Künstlerisch**

Selecting a preset sets all four style controls at once.

## Pipeline notes

The generation pipeline still uses fast CIELAB (`DeltaE CIE76`) nearest-color matching,
with precomputed palette LAB values, LAB caching, and low-cost edge-aware processing to keep performance responsive.

## Build (arm64 split debug)

```bash
cd /home/yadciel/.openclaw/workspace/korken_mosaic
flutter pub get
flutter build apk --debug --split-per-abi
```

Expected arm64 artifact:

`build/app/outputs/flutter-apk/app-arm64-v8a-debug.apk`

## Main files

- `lib/main.dart` – UI + mosaic logic
- `README.md` – overview and build instructions