| タイトル | Bayes Code for 2-dimensional Auto-regressive Hidden Markov Model and Its Application to Lossless Image Compression |
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| 著者 | 中原 悠太 、松嶋 敏泰 |
| 年度 | 2019 |
| 形式 | 国際学会 |
| 分野 | 情報源符号化 |
| 掲載雑誌名 | Proceedings of 2020 International Workshop on Advanced Image Technology (IWAIT 2020) |
| 掲載号・ページ | |
| 掲載年 | 2020 |
| 掲載月 | 1 |
| アブスト （日本語） |
2020 International Workshop on Advanced Image Technology (IWAIT 2020) 2020年1月5日～7日 Yogyakarta, Indonesia 査読有 DOI:10.1117/12.2566943 https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11515/2566943/Bayes-code-for-two-dimensional-auto-regressive-hidden-Markov-model/10.1117/12.2566943.short |
| アブスト （英語） |
For general lossless data compression in information theory, researchers have repeated expansion of stochastic models to express target data and design of codes for the expanded models. In this paper, we apply this approach to lossless image compression. We expand an auto-regressive hidden Markov model to a 2-dimensional model to express images containing single diagonal edge. Then, we design a Bayes code with an approximative parameter estimation by variational Bayesian methods. Experimental results for synthetic images show that the proposed model is sufficiently flexible for the target images and the parameter estimation is accurate enough. We also confirm the behavior of the proposed method on real images. |
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