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arXiv 2604.02252cs.CV

SPAR:单次通过任意分辨率ViT用于开放词汇分割

SPAR: Single-Pass Any-Resolution ViT for Open-vocabulary Segmentation

Naomi Kombol, Ivan Martinović, Siniša Šegvić, Giorgos Tolias

AI总结:

SPAR通过单次通过任意分辨率ViT实现高效高分辨率推理,提升开放词汇分割的mIoU性能,无需架构改动或像素级监督。

摘要:

基础视觉Transformer(ViTs)在需要细粒度空间理解的任务中效果有限,由于其固定的预训练分辨率和本质上粗糙的块级表示。这些挑战在密集预测场景中尤为明显,例如基于ViT的视觉-语言模型的开放词汇分割,其中高分辨率输入对于准确的像素级推理至关重要。现有方法通常在预训练分辨率上使用滑动窗口策略处理大分辨率图像。虽然这通过更细的步长提高了精度,但带来了显著的计算成本。我们引入SPAR:单次通过任意分辨率ViT,一种用于高效高分辨率推理的密集特征提取器。我们通过特征回归损失将精细步长滑动窗口教师的时空推理能力蒸馏到一个学生中,无需架构改动或像素级监督。应用于开放词汇分割时,SPAR将单次通过基线提升高达10.5 mIoU,甚至超越教师,证明了在高效高分辨率推理中的有效性。代码:https://github.com/naomikombol/SPAR

英文摘要:

Foundational Vision Transformers (ViTs) have limited effectiveness in tasks requiring fine-grained spatial understanding, due to their fixed pre-training resolution and inherently coarse patch-level representations. These challenges are especially pronounced in dense prediction scenarios, such as open-vocabulary segmentation with ViT-based vision-language models, where high-resolution inputs are essential for accurate pixel-level reasoning. Existing approaches typically process large-resolution images using a sliding-window strategy at the pre-training resolution. While this improves accuracy through finer strides, it comes at a significant computational cost. We introduce SPAR: Single-Pass Any-Resolution ViT, a resolution-agnostic dense feature extractor designed for efficient high-resolution inference. We distill the spatial reasoning capabilities of a finely-strided, sliding-window teacher into a single-pass student using a feature regression loss, without requiring architectural changes or pixel-level supervision. Applied to open-vocabulary segmentation, SPAR improves single-pass baselines by up to 10.5 mIoU and even surpasses the teacher, demonstrating effectiveness in efficient, high-resolution reasoning. Code: https://github.com/naomikombol/SPAR

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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