1.4.3 - Vegetation & Bbox Improvements (2026-06-12)
- IMPROVED: Vegetation segmentation on multispectral imagery (5+
bands) — less shadow and soil bleed in tree and crop masks. Automatic;
no effect on RGB or non-vegetation classes
- FIXED: BBox selections on high-resolution imagery were sometimes
rejected — small boxes now register correctly
- FIXED: Batch mode could freeze the request queue after an error —
now recovers cleanly

1.4.2 - Pro Features & Fixes (2026-06-04)
- NEW: Fill Holes in Filters tab (Pro) — removes interior voids from
segmented polygons with configurable size threshold
- FIXED: SAM3 text prompts now use native concept-prompting — text was
previously ignored
- FIXED: Removed debug print statements from production code
- NEW: Automated test suite added (41 tests covering helpers and mask
pipeline)
- NOTE: Pro users — please connect online once after updating to
v1.4.2

1.4.1 - Code Quality Fix (2026-05-09)
- FIXED: Flake8 E231/E221/E226 whitespace issues in geo_osam_dialog.py
and vegetation_helper.py

1.4.0 - UI Redesign & Workflow Improvements (2026-05-09)
- NEW: 4-tab flat UI (Segment, Detect, Results, Filters) with Settings
as gear overlay
- NEW: Similar from Selection — use any segmented feature as exemplar
- NEW: Vector extent ROI for Entire Raster — restrict Pro tiled
processing to a polygon area
- NEW: Cancel and Undo buttons on Detect tab
- NEW: Find Similar toggleable — click again to exit

1.3.6 - Code Quality & Security Fixes (2026-04-22)
- FIXED: Flake8 code quality issues cleared (unused imports, bare
excepts, ambiguous names, f-strings)
- FIXED: Status label color styles now correctly applied (broken
f-string in stylesheet)

1.3.5 - Security Fix (2026-04-22)
- FIXED: Removed eval from checkpoint download script (flagged by QGIS
plugin repository security scanner)
- FIXED: torch.load now uses weights_only=True (safer checkpoint
loading)
- FIXED: Bandit B310 false positives suppressed on urllib calls using
hardcoded https:// URLs
- FIXED: Removed unused HuggingFace Hub download functions from
build_sam.py (dead code in plugin context)
- FIXED: Excluded dev-only shell scripts and .bat files from plugin
package (pb_tool.cfg)
- FIXED: Removed unused imports flagged by QGIS code quality scanner
(F401, F811)
- FIXED: Ambiguous variable name 'l' renamed (E741)

1.3.4 - Settings Tab, Size & Shape Filters, GSD Support (2026-04-06)
- NEW: Tabbed UI — Segmentation and Settings tabs for cleaner layout
- NEW: GSD / Resolution card with auto-detect from raster metadata and
manual entry
- NEW: Real-world size filtering — min/max diameter (cm) and area (m²)
with live pixel hints
- NEW: Shape filters — min circularity, min compactness, max aspect
ratio
- NEW: Class-level max_size defaults (Vessels: 2000px, Vehicle: 500px)
- NEW: area_m2, diameter_cm, circularity attributes exported per
feature
- NEW: Per-mask progress bar during text/similar mode processing
- IMPROVED: Font sizes increased for laptop-screen readability
- IMPROVED: HTML tooltips with explicit white background (QGIS
compatible)
- IMPROVED: Active filter summary shown inline in status label

1.3.3 - Multi-Point, Export Formats & Fixes (2026-02-07)
- NEW: Multi-point segmentation with Shift+click (add) and Ctrl+click
(subtract) point accumulation
- NEW: Visual +/- markers on map showing accumulated positive/negative
points
- NEW: Multi-format export support (GeoPackage, Shapefile, GeoJSON,
FlatGeobuf)
- NEW: GeoPackage as default export format
- FIXED: License activation connectivity issue
- FIXED: SAM3 multi-point predictions returning separate objects
instead of combined result
- FIXED: "NoneType has no attribute write" crash on Windows when
sys.stderr is None during QGIS startup

1.3.2 - Bug Fix (2026-02-06)
- FIXED: MD5 hash security flag (added usedforsecurity=False)

1.3.1 - Bug Fix (2026-02-06)
- FIXED: Exemplar mask normalization in SAM3 similar object detection
(float masks now correctly scaled to uint8)

1.3.0 - SAM3 Integration & Pro Licensing (2025-12-28)
- NEW: SAM3 auto-segmentation ✅ WORKING (tested 2025-12-26)
- NEW: SAM3 text prompts ✅ WORKING (CLIP tokenizer fixed with runtime
patch!)
- NEW: SAM3 similar object detection ✅ WORKING (CLIP tokenizer fixed!)
- NEW: SAM3 Pro licensing system with device limits and offline
validation
- NEW: Free tier (extent/AOI) + Pro tier (entire raster) for SAM3
text/similar modes
- NEW: Cancel button for tiled operations - abort long-running
processes anytime
- NEW: Scope selector (AOI vs full raster) with tiled processing for
large rasters
- NEW: Model selection dropdown with size variants per hardware
(GPU/CPU)
- NEW: SAM3 download flow with Hugging Face token prompt
- FIXED: CLIP tokenizer bug preventing SAM3 text/exemplar modes
(runtime patch applied)
- FIXED: Similar mode bbox handling and mask result processing
- FIXED: Threaded tiled processing stability and progress reporting
- ENHANCED: Automatic model detection and availability checks
- ENHANCED: Improved UI state updates for model changes

1.2.2 - Threading Configuration Fix
- FIXED: PyTorch threading initialization error when other plugins
pre-configure threads
- FIXED: "cannot set number of interop threads" RuntimeError on plugin
startup
- Enhanced thread configuration with graceful fallback for
pre-initialized environments
- Improved compatibility with other PyTorch-based QGIS plugins

1.2.1 - Online Tile Layer Support
- NEW: Support for online tile services (XYZ, WMS, WMTS)
- NEW: Automatic tile caching with proper georeferencing

1.2.0 - Multi-spectral UAV Support with Comprehensive Object Detection
- NEW: Native multi-spectral UAV/satellite imagery support (5+ bands)
- NEW: Automatic NDVI calculation for vegetation detection using
NIR/Red bands
- NEW: Dual processing path - RGB for SAM2, full spectral for
vegetation analysis

1.2.2 - Threading Configuration Fix
- FIXED: PyTorch threading initialization error when other plugins
pre-configure threads
- FIXED: "cannot set number of interop threads" RuntimeError on plugin
startup
- Enhanced thread configuration with graceful fallback for
pre-initialized environments
- Improved compatibility with other PyTorch-based QGIS plugins

1.2.1 - Online Tile Layer Support
- NEW: Support for online tile services (XYZ, WMS, WMTS)
- NEW: Works with ESRI, Google Satellite, Bing Aerial
- NEW: Automatic tile caching with proper georeferencing

1.2.0 - Multi-spectral UAV Support with Comprehensive Object Detection
- NEW: Native multi-spectral UAV/satellite imagery support (5+ bands)
- NEW: Automatic NDVI calculation for vegetation detection using
NIR/Red bands
- NEW: Enhanced batch processing with up to 100 objects for vegetation
- NEW: Intelligent shape filtering to reject roads/tracks in
vegetation detection
- NEW: Dual processing path - RGB for SAM2, full spectral for
vegetation analysis
- NEW: Specialized detection helpers for Agriculture, Road, Vehicle,
Water, Vessels, and General classes
- NEW: Non-blocking queue system - submit multiple requests without
waiting
- NEW: Class-specific validation and detection algorithms optimized
for each object type
- FIXED: High-resolution reflectance value preservation (0-1 range)
and data type truncation
- FIXED: SAM2 tensor mismatch errors with multi-spectral input
- FIXED: Vessels detection shoreline noise with strict size validation
(>5000px rejection)
- FIXED: Oversized mask validation (rejects masks >10% of image area)
- FIXED: Crash prevention with robust processing state management
- FIXED: Shape attribute renamed from 'class_name' to 'class' for
consistency
- FIXED: Mathematical warnings in texture calculation
- ENHANCED: Vegetation detection with aspect ratio and solidity
filtering
- ENHANCED: Sequential processing with queue status feedback and
position tracking
- ENHANCED: Point and batch mode validation consistency
- IMPROVED: Comprehensive logging for debugging high-resolution
imagery issues
- IMPROVED: User experience with rapid clicking support and clear
status messages

1.1.0 - Major Bug Fixes and GUI Improvements
- FIXED: Multiple raster layer support - segmentation now works with
selected raster layer
- FIXED: Resolved "point is out of raster bounds" exception with
multiple rasters loaded (must be same CRS)
- FIXED: Panel focus management - controls properly lose focus after
use
- FIXED: Space key no longer re-triggers last clicked button
- FIXED: Added close/minimize button to control panel header
- FIXED: Font display issues on Hi-DPI screens
- FIXED: Enabled bounding box selection mode for rectangular area
prompts
- NEW: Refined GUI with improved user interface design
- NEW: Flexible panel width for better screen adaptation
- Enhanced panel layout and control positioning
- Improved keyboard event filtering and focus handling
- Better multi-raster workflow support
- Enhanced user experience with cleaner interface elements
- Improved cross-platform UI compatibility
- General stability and usability improvements

1.0.0 - Major Update with Intelligent Model Selection
- Intelligent model selection: SAM 2.1 for GPU, Ultralytics SAM2.1_B
for CPU
- Exceptional CPU performance: Sub-second segmentation on high-core
systems (24+ cores)
- Enhanced CPU performance with Ultralytics SAM2.1_B integration
(5-30x speedup)
- Automatic device detection (CUDA/Apple Silicon/CPU) with optimal
model selection
- SAM 2.1 support with improved accuracy for small objects and
occlusion handling
- Intelligent threading optimization: High-core CPUs (16+) use 75% of
cores for maximum throughput
- Multi-threaded processing for responsive UI during inference
- Point and BBox segmentation modes with adaptive processing
- 12 pre-defined classes + custom class creation with color coding
- Vehicle and Ship classes for transportation and maritime analysis
- Undo functionality for mistake correction with polygon-level
tracking
- Custom output folder selection with user-configurable paths
- Optional debug mask saving (disabled by default for performance)
- Automatic raster layer re-selection for streamlined workflow
- Professional shapefile export with detailed attributes and metadata
- Performance optimization based on zoom level and hardware
capabilities
- Comprehensive error handling and user feedback system
- Professional workflow features optimized for GIS analysis
- Updated dependencies: torch, torchvision, ultralytics,
opencv-python, rasterio, shapely, hydra-core
- Automatic model downloading: Ultralytics handles SAM2.1_B, plugin
manages SAM 2.1.
- Enhanced memory management and processing efficiency
- Cross-platform compatibility with Windows, macOS, and Linux

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