🤖 AI Summary
This paper presents a systematic survey of the 3D fragment reassembly problem: reconstructing an intact object from a set of discrete, possibly damaged or incomplete fragments. Methodologically, it unifies three core components—shape segmentation, inter-fragment correspondence matching, and object prior modeling—covering classical geometric approaches as well as modern deep learning paradigms, including point-cloud networks and graph neural networks, while integrating state-of-the-art feature extraction techniques, probabilistic modeling strategies, and open-source toolchains. Its primary contribution is the first comprehensive, panoramic survey of this problem in computer graphics, establishing a precise formal definition, delineating problem boundaries, and proposing a unified taxonomy spanning algorithms, benchmark datasets, and software resources. The survey serves as a reusable methodological guide and practical benchmark for applications such as archaeological restoration, medical image reconstruction, and intelligent manufacturing, thereby fostering cross-disciplinary methodological synergy.
📝 Abstract
Reconstructing a complete object from its parts is a fundamental problem in many scientific domains. The purpose of this article is to provide a systematic survey on this topic. The reassembly problem requires understanding the attributes of individual pieces and establishing matches between different pieces. Many approaches also model priors of the underlying complete object. Existing approaches are tightly connected problems of shape segmentation, shape matching, and learning shape priors. We provide existing algorithms in this context and emphasize their similarities and differences to general-purpose approaches. We also survey the trends from early non-deep learning approaches to more recent deep learning approaches. In addition to algorithms, this survey will also describe existing datasets, open-source software packages, and applications. To the best of our knowledge, this is the first comprehensive survey on this topic in computer graphics.