Block-Matching Multi-pedestrian Tracking

Target association is an extremely important problem in the field of multi-object tracking, especially for pedestrian scenes with high similarity in appearance and dense distribution. The traditional approach of combining IOU and ReID techniques with the Hungarian algorithm only partially addresses these challenges. To improve the model's matching ability, this paper proposes a block-matching model that extracts local features using a Block Matching Module (BMM) based on the Transformer model. The BMM extracts features by dividing them into blocks and mines effective features of the target to complete target similarity evaluation. Additionally, a Euclidean Distance Module (EDM) based on the Euclidean distance association matching strategy is introduced to further enhance the model's association ability. By integrating BMM and EDM into the same multi-object tracking model, this paper establishes a novel model called BWTrack that achieves excellent performance on MOT16, MOT17, and MOT20 while maintaining high performance at 7 FPS on a single GPU.