XPoint: A Self-Supervised Visual-State-Space based Architecture for Multispectral Image Registration

• URL: http://arxiv.org/abs/2411.07430v1
• Date: Mon, 11 Nov 2024 23:12:08 GMT
• Title: XPoint: A Self-Supervised Visual-State-Space based Architecture for Multispectral Image Registration
• Authors: Ismail Can Yagmur, Hasan F. Ates, Bahadir K. Gunturk,
• Abstract summary: XPoint is a self-supervised, modular image-matching framework for adaptive training and fine-tuning on aligned multispectral datasets. XPoint employs modularity and self-supervision to allow for the adjustment of elements such as the base detector. XPoint consistently outperforms or matches state-ofthe-art methods in feature matching and image registration tasks.
• Score: 2.7036595757881323
• License:
• Abstract: Accurate multispectral image matching presents significant challenges due to non-linear intensity variations across spectral modalities, extreme viewpoint changes, and the scarcity of labeled datasets. Current state-of-the-art methods are typically specialized for a single spectral difference, such as visibleinfrared, and struggle to adapt to other modalities due to their reliance on expensive supervision, such as depth maps or camera poses. To address the need for rapid adaptation across modalities, we introduce XPoint, a self-supervised, modular image-matching framework designed for adaptive training and fine-tuning on aligned multispectral datasets, allowing users to customize key components based on their specific tasks. XPoint employs modularity and self-supervision to allow for the adjustment of elements such as the base detector, which generates pseudoground truth keypoints invariant to viewpoint and spectrum variations. The framework integrates a VMamba encoder, pretrained on segmentation tasks, for robust feature extraction, and includes three joint decoder heads: two are dedicated to interest point and descriptor extraction; and a task-specific homography regression head imposes geometric constraints for superior performance in tasks like image registration. This flexible architecture enables quick adaptation to a wide range of modalities, demonstrated by training on Optical-Thermal data and fine-tuning on settings such as visual-near infrared, visual-infrared, visual-longwave infrared, and visual-synthetic aperture radar. Experimental results show that XPoint consistently outperforms or matches state-ofthe-art methods in feature matching and image registration tasks across five distinct multispectral datasets. Our source code is available at https://github.com/canyagmur/XPoint.

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