arXiv Computer Vision By Bavesh Balaji, Letian Jiang, Alexander Wong, David Clausi, Sirisha Rambhatla

MaskMerge: Structure-aware Token Merging for Efficient Instance Segmentation

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MaskMerge introduces a structure-aware token merging strategy for Vision Transformers that leverages coarse mask predictions to guide token fusion, preventing cross-instance token merging that plagues existing methods. In high inter-instance similarity settings such as PanNuke and iSAID, MaskMerge boosts mAP from 30.1 to 32.1 and 33.1 to 36.2 respectively, while cutting FLOPs and speeding up inference. The approach also matches state‑of‑the‑art performance on Cityscapes with fewer computations and transfers well to MAE‑pretrained backbones.

Machine-generated by The Flow from the publisher's headline and feed description — not written or checked by a human. The full article lives at arXiv Computer Vision.

arXiv Computer Vision
Sep 17

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The paper studies Graph-Guided Token Merging (G2TM), a module that reduces token count in Vision Transformers. It evaluates G2TM across multiple segmentation frameworks and decoder types, finding that its performance gains are tied to the encoder rather than the decoder. The authors report consistent reductions in GFLOPs (22‑47%) and throughput improvements (up to 74%) on ADE20K, with optimal hyperparameters depending mainly on backbone pre‑training and target dataset.

By Victor Bercy, Martyna Poreba, Michal Szczepanski, Samia Bouchafa
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Do All Visual Tokens Matter Equally? Object-Evidence Preserving Token Merging for Vision-Language Retrieval

Multi-vector vision-language retrieval preserves fine-grained visual evidence through maximum-similarity late interaction, but dense image-side tokens make storage and scoring expensive. Existing token compression methods reduce this cost, yet they can remove or collapse object- and region-level evidence that future query tokens may need to select.

arXiv Computer Vision
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SCMerge: Spatial-Consistency-Aware Token Pair Merging for Efficient Semantic Segmentation

SCMerge is a training‑free token merging technique for Vision Transformers that jointly considers feature similarity and spatial consistency when pairing tokens. The merged tokens are processed within the encoder and later reconstructed onto the original patch grid during decoding. Experiments on ADE20K, Pascal Context, and Cityscapes demonstrate that SCMerge improves the balance between segmentation accuracy and computational efficiency compared to existing methods.

By Junfeng Ren (Southern University of Science and Technology), Yi Gong (Southern University of Science and Technology), Yuan Zeng (Shenzhen Technology University)