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PlainMamba: Improving Non-Hierarchical Mamba in Visual Recognition

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arxiv 2403.17695 v2 pith:26PIX5J4 submitted 2024-03-26 cs.CV cs.LG

PlainMamba: Improving Non-Hierarchical Mamba in Visual Recognition

classification cs.CV cs.LG
keywords plainmambamodelvisualmambanon-hierarchicalrecognitionscanningtokens
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present PlainMamba: a simple non-hierarchical state space model (SSM) designed for general visual recognition. The recent Mamba model has shown how SSMs can be highly competitive with other architectures on sequential data and initial attempts have been made to apply it to images. In this paper, we further adapt the selective scanning process of Mamba to the visual domain, enhancing its ability to learn features from two-dimensional images by (i) a continuous 2D scanning process that improves spatial continuity by ensuring adjacency of tokens in the scanning sequence, and (ii) direction-aware updating which enables the model to discern the spatial relations of tokens by encoding directional information. Our architecture is designed to be easy to use and easy to scale, formed by stacking identical PlainMamba blocks, resulting in a model with constant width throughout all layers. The architecture is further simplified by removing the need for special tokens. We evaluate PlainMamba on a variety of visual recognition tasks, achieving performance gains over previous non-hierarchical models and is competitive with hierarchical alternatives. For tasks requiring high-resolution inputs, in particular, PlainMamba requires much less computing while maintaining high performance. Code and models are available at: https://github.com/ChenhongyiYang/PlainMamba .

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Forward citations

Cited by 18 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

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    cs.CV 2025-05 unverdicted novelty 7.0

    FractalMamba++ scales Vision Mamba across resolutions by using Hilbert fractal serialization, hierarchy-based skip connections, and fractal-aware 2D rotary position encoding.

  2. Mamba-Based Graph Convolutional Networks: Tackling Over-smoothing with Selective State Space

    cs.LG 2025-01 unverdicted novelty 7.0

    MbaGCN combines message aggregation, selective state space transitions, and node state prediction to create a more scalable deep graph convolutional network.

  3. Liquid Fusion of Heterogeneous Representations Towards General Salient Object Detection

    cs.CV 2026-06 unverdicted novelty 6.0

    LFNet fuses complementary representations from state space and convolutional backbones using liquid fusion and saliency-guided upsampling to reach state-of-the-art performance on five salient object detection tasks.

  4. Spatial-Aware Reduction Framework: Towards Efficient and Faithful Visual State Space Models

    cs.CV 2026-06 unverdicted novelty 6.0

    STORM is a training-free spatial-aware token reduction framework that reformulates compression on spatial units to preserve grid topology and neighborhood coherence in visual state space models.

  5. Scaling Parallel Sequence Models to Foundation-Scale Vision Encoders

    cs.CV 2026-05 unverdicted novelty 6.0

    C-GSPN scales 2D spatial propagation to foundation vision encoders via a fast CUDA kernel, compressed blocks, and two-stage distillation, matching ViT performance with 15% fewer parameters and 4x block speedup at 2K r...

  6. Deformba: Vision State Space Model with Adaptive State Fusion

    cs.CV 2026-05 unverdicted novelty 6.0

    Deformba introduces context-adaptive state fusion to vision SSMs for better spatial augmentation and cross-stream interactions, showing strong results on 2D classification/detection/segmentation and 3D BEV perception ...

  7. HAMSA: Scanning-Free Vision State Space Models via SpectralPulseNet

    cs.CV 2026-04 unverdicted novelty 6.0

    HAMSA achieves 85.7% ImageNet-1K top-1 accuracy as a spectral-domain SSM with 2.2x faster inference and lower memory than transformers or scanning-based SSMs.

  8. Partial Ring Scan: Revisiting Scan Order in Vision State Space Models

    cs.CV 2026-02 conditional novelty 6.0

    Ring-based scanning with selective channel routing improves accuracy, speed, and rotation robustness of vision state-space models.

  9. ParVL: Parallel Scaling and Expandable Compute Allocation for Multimodal LLMs

    cs.CV 2026-08 conditional novelty 5.0

    ParVL scales MLLM computation by running multiple prefix-conditioned ViT and LLM branches over a shared backbone, improving average benchmark scores by 0.3 to 0.9 points and showing task-dependent vision-language allocation.

  10. SCRWKV: Ultra-Compact Structure-Calibrated Vision-RWKV for Topological Crack Segmentation

    cs.CV 2026-05 unverdicted novelty 5.0

    SCRWKV is a 1.22M-parameter Vision-RWKV model using Structure-Field Encoder with AMCM and SCIU modules plus CSHF decoder that reports F1 0.8428 and mIoU 0.8512 on TUT crack dataset while claiming to outperform prior SOTA.

  11. TopoMamba: Topology-Aware Scanning and Fusion for Segmenting Heterogeneous Medical Visual Media

    cs.CV 2026-04 unverdicted novelty 5.0

    TopoMamba improves medical image segmentation by combining topology-aware diagonal scans with standard cross-scans and a HSIC Gate for efficient fusion, yielding gains on thin and curved targets like the pancreas.

  12. Correcting Prompt Dependence in LLM Benchmarks: A Bayesian Hierarchical Model with Embedding-Space Clustering

    cs.CR 2025-10 conditional novelty 5.0

    A Bayesian model that groups similar LLM test prompts into clusters gives better predictive scores than a no-clustering baseline but does not prove that it truly corrects prompt dependence.

  13. MambaADv2: Evolving Duality-enhanced State Space Model for Unsupervised Anomaly Detection

    cs.CV 2026-06 unverdicted novelty 4.0

    MambaADv2 evolves Mamba state space models with hybrid blocks, frequency convolutions, and adaptive scanning for improved unsupervised anomaly detection.

  14. Can Visual Mamba Improve AI-Generated Image Detection? An In-Depth Investigation

    cs.CV 2026-05 unverdicted novelty 4.0

    Benchmarks Vision Mamba variants for AI-generated image detection against CNN, ViT, and VLM detectors on diverse datasets and synthetic sources, reporting promise alongside limitations.

  15. Beyond ZOH: Advanced Discretization Strategies for Vision Mamba

    cs.CV 2026-04 unverdicted novelty 4.0

    Bilinear discretization improves Vision Mamba accuracy over zero-order hold on classification, segmentation, and detection benchmarks with only modest extra training cost.

  16. Beyond Mamba: Enhancing State-space Models with Deformable Dilated Convolutions for Multi-scale Traffic Object Detection

    cs.CV 2026-04 unverdicted novelty 4.0

    MDDCNet combines Mamba blocks with deformable dilated convolutions, enhanced feed-forward networks, and an attention-aggregating feature pyramid to achieve better multi-scale traffic object detection than prior detectors.

  17. VCMamba: Bridging Convolutions with Multi-Directional Mamba for Efficient Visual Representation

    cs.CV 2025-09 conditional novelty 4.0

    VCMamba reports that using convolutional feed-forward blocks for the first three stages followed by multi-directional Mamba blocks in the final stage yields 82.6% ImageNet-1K and 47.1 ADE20K mIoU at 31.5M parameters, ...

  18. A Survey of Mamba

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