🧵 Cross Stitch Pattern Generator A simple cross-stitch pattern generator based on uploaded images. The program automatically selects the closest colors from a DMC palette (or custom palette) and creates a pattern with color codes, symbols, and stitch count.

🔍 Main Features Image Upload (JPG, PNG, BMP) Automatic selection of optimal number of colors Color matching using DMC or custom palettes Pattern preview with grid and symbol overlay Export to PNG and PDF formats Custom palette management (import/export CSV)

🖼 Application Interface The app is built with PyQt6 and consists of two main panels:

Left Panel: Image Selection : "Select Image" button Pattern Settings : Width in stitches Number of colors Palette type: DMC or Custom Custom Palette Management : Add/remove DMC color by code Save/load custom palette (CSV) Actions : Preview, Generate Pattern Right Panel: Pattern Preview Area Status Info : size, loading status

⚙️ Technical Details Used Libraries: PyQt6 — GUI interface OpenCV (cv2) — image processing scikit-learn (MiniBatchKMeans) — color clustering matplotlib, PIL, numpy, pandas, skimage Core Algorithm: Load and resize image Reduce to target number of colors via k-means clustering Match clustered colors to nearest DMC color (CIEDE2000) Generate enlarged pattern image with symbols and grid Export pattern and legend to PDF

📦 How to Run Requirements: Python 3.8+ Install dependencies: bash

pip install opencv-python scikit-learn matplotlib numpy pandas PyQt6 pillow

Launch:

python cross_stitch_generator.py

📄 Example Output PDF output includes:

Enlarged pattern with symbols and grid Color legend with DMC codes, names, and stitch counts