Viewpoint Integration and Registration with Vision Language Foundation Model for Image Change Understanding

• URL: http://arxiv.org/abs/2309.08585v1
• Date: Fri, 15 Sep 2023 17:41:29 GMT
• Title: Viewpoint Integration and Registration with Vision Language Foundation Model for Image Change Understanding
• Authors: Xiaonan Lu, Jianlong Yuan, Ruigang Niu, Yuan Hu, Fan Wang
• Abstract summary: We show that existing vision language foundation models (VLFMs) perform poorly when applied directly to image change understanding (ICU) ICU requires models to capture actual changes between multiple images and describe them in language. We propose a Viewpoint Integration and Registration method to address these problems.
• Score: 15.392243642628387
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Recently, the development of pre-trained vision language foundation models (VLFMs) has led to remarkable performance in many tasks. However, these models tend to have strong single-image understanding capability but lack the ability to understand multiple images. Therefore, they cannot be directly applied to cope with image change understanding (ICU), which requires models to capture actual changes between multiple images and describe them in language. In this paper, we discover that existing VLFMs perform poorly when applied directly to ICU because of the following problems: (1) VLFMs generally learn the global representation of a single image, while ICU requires capturing nuances between multiple images. (2) The ICU performance of VLFMs is significantly affected by viewpoint variations, which is caused by the altered relationships between objects when viewpoint changes. To address these problems, we propose a Viewpoint Integration and Registration method. Concretely, we introduce a fused adapter image encoder that fine-tunes pre-trained encoders by inserting designed trainable adapters and fused adapters, to effectively capture nuances between image pairs. Additionally, a viewpoint registration flow and a semantic emphasizing module are designed to reduce the performance degradation caused by viewpoint variations in the visual and semantic space, respectively. Experimental results on CLEVR-Change and Spot-the-Diff demonstrate that our method achieves state-of-the-art performance in all metrics.

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