- Added `resize_mode` option to `preprocess_node` for handling image resizing strategies: stretch, keep ratio, and letterbox.
- Implemented `BuildLetterbox` function to create letterbox resized frames while maintaining aspect ratio.
- Introduced `FrameTransformMeta` structure to store transformation metadata for frames, including scaling and padding information.
- Updated detection coordinate calculations in `ai_yolo_node` to utilize transformation metadata for accurate bounding box adjustments.
- Enhanced bounding box mapping in `osd_node` to account for potential discrepancies between detection and frame sizes.
- Refactored image processing logic to support new resizing modes and ensure compatibility with existing formats.
sladro
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