Release v0.4.0

AutoLineDigitizer v0.4.0

New Features

• Line Model selection: Switch between General and Battery (fine-tuned) models via dropdown in sidebar
• Axis Model dropdown: Axis detection model (ChartDete) shown as dropdown in sidebar for future extensibility
• Manual model import: Import Models button with file picker for proxy/firewall environments where auto-download fails
• SHA256 hash verification: Validates imported model files to prevent loading corrupted/wrong files

Improvements

• EasyOCR models bundled: OCR models included in the app — no network access needed for axis label reading
• Proxy/SSL support: Robust fallback for corporate proxy environments (manual browser download + import)
• UI reorganization: Model loading status moved to sidebar under each model dropdown; extraction status shown in main panel
• Text wrapping: Status messages and download help UI wrap properly within sidebar width
• Button simplification: "Open Image (or Cmd+V)" merged into a single button

Bug Fixes

• Fix init_cfg pretrained weight download in both LineFormer and ChartDete configs (caused SSL errors behind proxies)
• Fix model loading crash when using parallel threads (mmcv.Config.fromfile thread-safety issue)
• Fix download help UI accumulation on repeated model switches
• Fix EasyOCR model download failure in bundled app

Download

• macOS (Apple Silicon): AutoLineDigitizer-macOS.zip
• Windows: AutoLineDigitizer-Windows.zip

Installation

macOS

1. Download and unzip AutoLineDigitizer-macOS.zip
2. Move AutoLineDigitizer.app to Applications
3. Right-click > "Open" (required for first launch)
4. Models will be downloaded automatically on first launch

Windows

1. Download and unzip AutoLineDigitizer-Windows.zip
2. Run AutoLineDigitizer\AutoLineDigitizer.exe
3. Models will be downloaded automatically on first launch

See Manual Model Download for proxy environments.

Release v0.3.1

AutoLineDigitizer v0.3.1

What's Changed (since v0.3.0)

Bug Fix

• Fixed SSL certificate error: Model downloads from HuggingFace now work correctly in the bundled app (previously failed with SSL EOF error)

New

• Version display: App version is now shown at the bottom of the Settings panel

Full Changelog (since v0.2.0)

Line Model Selection

• Multiple line extraction models: Choose between General and Battery-specialized models from the Settings panel
• Battery (iter_5000): Best for accurate line counting with fewer false positives (recommended for charge/discharge curves)
• Battery (best_segm): Best for precise mask segmentation boundaries
• Auto-download from HuggingFace: Fine-tuned models are downloaded automatically on first use with progress bar

Improved Point Extraction

• Replaced the old extraction algorithm with a median-based centerline algorithm
• More accurate point placement along detected lines

UX Improvements

• Immediate results: Extracted points are displayed right after line extraction
• Faster model switching: Axis detection results are preserved when switching line models
• Paste hint: "or Cmd+V to paste" text shown next to Open Image button

Download

• macOS (Apple Silicon): AutoLineDigitizer-macOS.zip
• Windows: AutoLineDigitizer-Windows.zip

Installation

macOS

1. Download and unzip AutoLineDigitizer-macOS.zip
2. Move AutoLineDigitizer.app to Applications
3. On first launch, macOS will show a warning: "AutoLineDigitizer.app cannot be opened because the developer cannot be verified."
   • Click Cancel (not "Move to Trash")
   • Go to System Settings → Privacy & Security → scroll down and click "Open Anyway"
   • Or: Right-click the app → Open → click Open in the dialog
4. Models will be downloaded automatically on first launch

Windows

1. Download and unzip AutoLineDigitizer-Windows.zip
2. Run AutoLineDigitizer\AutoLineDigitizer.exe
3. Models will be downloaded automatically on first launch

Release v0.3.0

AutoLineDigitizer v0.3.0

What's New

Line Model Selection

• Multiple line extraction models: Choose between General and Battery-specialized models from the Settings panel
• Battery (iter_5000): Best for accurate line counting with fewer false positives (recommended for charge/discharge curves)
• Battery (best_segm): Best for precise mask segmentation boundaries
• Auto-download from HuggingFace: Fine-tuned models are downloaded automatically on first use with progress bar

Improved Point Extraction

• Replaced the old extraction algorithm (fixed-interval sampling + component analysis + linear interpolation) with a median-based centerline algorithm
• More accurate point placement along detected lines
• No more missing points at thick or branching regions of the mask

UX Improvements

• Immediate results: Extracted points are displayed right after line extraction, without waiting for axis detection
• Faster model switching: Axis detection results are preserved when switching line models (no re-detection needed)
• Paste hint: "or Cmd+V to paste" text shown next to Open Image button

README

• Replaced Streamlit setup instructions with desktop app download guide
• Added macOS Gatekeeper warning workaround instructions
• Added Intel Mac compatibility note (Apple Silicon only for now)

Download

• macOS (Apple Silicon): AutoLineDigitizer-macOS.zip
• Windows: AutoLineDigitizer-Windows.zip

Installation

macOS

1. Download and unzip AutoLineDigitizer-macOS.zip
2. Move AutoLineDigitizer.app to Applications
3. On first launch, macOS will show a warning: "AutoLineDigitizer.app cannot be opened because the developer cannot be verified."
   • Click Cancel (not "Move to Trash")
   • Go to System Settings → Privacy & Security → scroll down and click "Open Anyway"
   • Or: Right-click the app → Open → click Open in the dialog
4. Models will be downloaded automatically on first launch

Windows

1. Download and unzip AutoLineDigitizer-Windows.zip
2. Run AutoLineDigitizer\AutoLineDigitizer.exe
3. Models will be downloaded automatically on first launch

Release v0.2.0

AutoLineDigitizer v0.2.0

What's New

New Features

• Clipboard paste support: Load images directly with Cmd+V (macOS) / Ctrl+V (Windows)
• Auto-extraction on image load: Automatically runs line extraction when a new image is loaded (including 2nd+ images)
• Instant downsampling: Inference results are cached, allowing real-time parameter adjustments without re-running the model
• Auto-reload on settings change: Changing downsampling method, max points, or sort order instantly updates results
• Responsive image display: Images now fill the available width for better visibility
• Digitizer tool export: Export extracted data directly to StarryDigitizer (.zip) and WebPlotDigitizer (.tar) for fine-tuning
• External links: Quick-access buttons to open StarryDigitizer and WebPlotDigitizer

UI Improvements

• Simplified sort dropdown labels (e.g. "Detection Order" instead of "Original (Detection Order)")
• Removed unnecessary "Show visualization" checkbox
• Moved status indicators (Models loaded, Axis detection) to main panel
• Default sort changed to "Mean Y (High → Low)"
• Max Points slider now displays current value (default: 20, max: 100)
• Top-aligned image layout instead of vertical centering
• Redesigned export section with "Adjust in Digitizer" heading, grouped by tool

Build & CI

• Cross-platform build support (macOS Apple Silicon + Windows)
• GitHub Actions release workflow with bundled EasyOCR models
• Auto-download models on first launch
• Pinned flet 0.24.1 and mmcv-full 1.7.2 for stable builds
• Fixed mmcv build issues (setuptools compatibility, --no-build-isolation)
• Fixed ChartDete mmcv 2.x version check compatibility

Documentation

• Added demo video to README
• Updated model weights section with links to source repositories

---

Download

• macOS (Apple Silicon): AutoLineDigitizer-macOS.zip
• Windows: AutoLineDigitizer-Windows.zip

Installation

macOS

1. Download and unzip AutoLineDigitizer-macOS.zip
2. Move AutoLineDigitizer.app to Applications
3. Right-click > "Open" (required for first launch)
4. Models will be downloaded automatically on first launch

Windows

1. Download and unzip AutoLineDigitizer-Windows.zip
2. Run AutoLineDigitizer\AutoLineDigitizer.exe
3. Models will be downloaded automatically on first launch

v0.1.0 - Initial Release

AutoLineDigitizer

Automatic line extraction from chart images.

Features

• LineFormer for line extraction
• ChartDete + EasyOCR for automatic axis detection
• Export to StarryDigitizer and WebPlotDigitizer formats

Demo

See the attached video for a demonstration of the Streamlit app.

Requirements

• Python 3.8+
• PyTorch
• mmcv-full, mmdet
• See requirements.txt for full list

Model Weights (CI)

Model weights for AutoLineDigitizer builds. Do not delete - required by CI and app auto-download.