Feature Pyramid Networks (FPN) Explained
Learn how Feature Pyramid Networks build multi-scale feature representations through top-down pathways and lateral connections for robust object detection.
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10 min read · intermediate
Computer Vision
Object detection, feature pyramids, and visual recognition techniques.
- CV
- 8 concepts
All Computer Vision Concepts
ASFF: Adaptive Spatial Feature Fusion
Learning where to fuse multi-scale features with per-pixel, per-level fusion weights. ASFF challenges FPN's uniform fusion assumption.
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15 min read · intermediate
RoI Pooling, RoI Align & Deformable RoI Pooling
Understanding region-based feature extraction for object detection, from quantized pooling to sub-pixel alignment and adaptive sampling
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12 min read · intermediate
Anchor-Based vs Anchor-Free Object Detection
Compare anchor-based vs anchor-free object detection: Faster R-CNN and RetinaNet anchors vs FCOS and CenterNet point-based methods.
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12 min read · intermediate
NAS-FPN: Learning to Design Feature Pyramid Networks
Understanding how neural architecture search discovers optimal feature pyramid architectures that outperform hand-designed alternatives
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15 min read · advanced
DETR Explained: Object Detection with Transformers
Understanding end-to-end object detection with transformers, from DETR's object queries to bipartite matching and attention-based localization
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15 min read · advanced
NMS & Soft-NMS: Removing Duplicate Detections
Understanding Non-Maximum Suppression algorithms for object detection post-processing, from greedy NMS to soft variants
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12 min read · intermediate
Visual Complexity Analysis for Token Allocation
Learn how visual complexity analysis optimizes vision transformer token allocation using edge detection, FFT, and entropy metrics.
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15 min read · advanced