arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2603.01535cs.CV

通过外观和几何属性编辑评估语义分割模型

Benchmarking Semantic Segmentation Models via Appearance and Geometry Attribute Editing

Zijin Yin, Bing Li, Kongming Liang, Hao Sun, Zhongjiang He, Zhanyu Ma, Jun Guo

AI总结:

本文提出Gen4Seg数据生成管道,通过生成具有不同属性变化的挑战样本来评估语义分割模型,构建了Pascal-EA和COCO-EA两个新基准,发现开放词汇模型在几何变化下不比封闭集方法更鲁棒,数据增强技术在提升外观变化鲁棒性上有限。

摘要:

语义分割在自动驾驶和医学图像分析等应用中起关键作用。在实际部署分割模型时,需提前测试其在复杂场景中的行为。本文构造了自动数据生成管道Gen4Seg,通过生成具有不同属性变化的挑战样本来压力测试语义分割模型。除了以往仅关注全局天气和风格迁移的评估范式外,我们还研究了在对象和图像层面的外观和几何属性变化。这些包括对象颜色、材质、大小、位置,以及图像层面的天气和风格变化。为此,我们提出通过扩散模型对现有真实图像的视觉属性进行精确控制,从而利用现有的分割标签来重新使用编辑后的图像,大大降低了劳动成本。使用我们的管道,我们构建了两个新的基准,Pascal-EA和COCO-EA。我们评估了多种语义分割模型,从封闭集模型到开放词汇大模型。我们有几项关键发现:1)先进的开放词汇模型在几何变化下并不比封闭集方法更鲁鲁;2)数据增强技术如CutOut和CutMix在增强对抗外观变化的鲁棒性上有限;3)我们的管道也可以作为数据增强工具,提高在分布内和分布外的性能。我们的工作表明生成模型作为自动分析分割模型的有效工具的潜力,我们希望我们的发现能帮助从业者和研究人员开发更鲁棒和可靠的分割模型。

英文摘要:

Semantic segmentation takes pivotal roles in various applications such as autonomous driving and medical image analysis. When deploying segmentation models in practice, it is critical to test their behaviors in varied and complex scenes in advance. In this paper, we construct an automatic data generation pipeline Gen4Seg to stress-test semantic segmentation models by generating various challenging samples with different attribute changes. Beyond previous evaluation paradigms focusing solely on global weather and style transfer, we investigate variations in both appearance and geometry attributes at the object and image level. These include object color, material, size, position, as well as image-level variations such as weather and style. To achieve this, we propose to edit visual attributes of existing real images with precise control of structural information, empowered by diffusion models. In this way, the existing segmentation labels can be reused for the edited images, which greatly reduces the labor costs. Using our pipeline, we construct two new benchmarks, Pascal-EA and COCO-EA. We benchmark a wide variety of semantic segmentation models, spanning from closed-set models to open-vocabulary large models. We have several key findings: 1) advanced open-vocabulary models do not exhibit greater robustness compared to closed-set methods under geometric variations; 2) data augmentation techniques, such as CutOut and CutMix, are limited in enhancing robustness against appearance variations; 3) our pipeline can also be employed as a data augmentation tool and improve both in-distribution and out-of-distribution performances. Our work suggests the potential of generative models as effective tools for automatically analyzing segmentation models, and we hope our findings will assist practitioners and researchers in developing more robust and reliable segmentation models.

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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