Performance of region-based Markov random field with XY spins

Naoki Wada, Masaichiro Mizumaki, Yoshiki Seno, Yuta Kimura, Koji Amezawa, Masato Okada, Ichiro Akai, Toru Aonishi

研究成果: Article査読


Markov Random Field (MRF) models have become increasingly necessary especially in data-driven science. There are two kinds of MRF model applicable to image segmentation: edge-based and region-based. The region-based model is more easily implemented and is more robust to noise than the edge-based model. However, the region-based model often becomes trapped in a local minimum, which is sensitive to initial conditions. To overcome the issue of local minima, Okada proposed a region-based model with hidden variables formed by XY spins. This model has attracted attention regarding neuromorphic hardware implementations, but the efficacy of this model has not been thoroughly evaluated. In this paper, we verify the performance of the region-based model with XY spins, in comparison with that of the region-based model with Ising spins. To achieve this purpose, we construct variational Bayes algorithms and Markov chain Monte Carlo algorithms for both region-based models and evaluate their performances using synthetic data and real lithium-ion-battery imaging data.

ジャーナルjournal of the physical society of japan
出版ステータスPublished - 2021 4 15

ASJC Scopus subject areas

  • 物理学および天文学(全般)


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