@article{oai:ipsj.ixsq.nii.ac.jp:00190487,
 author = {岡田, 光弘 and 佐藤, 拓杜 and 稲田, 圭介 and 谷田部, 祐介 and 伊藤, 浩朗 and 小味, 弘典 and Mitsuhiro, Okada and Takuto, Sato and Keisuke, Inata and Yusuke, Yatabe and Hiroaki, Ito and Hironori, Komi},
 issue = {7},
 journal = {情報処理学会論文誌},
 month = {Jul},
 note = {人間の視野における解像度は視野中心で最も高く，周辺部ほど低下する．この視覚特性に基づき，視野周辺の映像の解像度を削減するFoveated Imaging処理（FI処理）と呼ばれる画像処理技術がある．本論文では，フルHD映像を対象に主観的な解像感を維持したまま伝送ビットレートを削減するために，エンコード前の映像にFI処理を適用した映像圧縮伝送システムを構築する．さらに，このシステムの有効性を評価するために，Degradation Category Rating（DCR）法と呼ばれる主観画質の評価手法を用いて，基準映像に対するFI処理を適用した映像の画質劣化を5段階で評価した．その結果，Degradation Mean Opinion Score（DMOS）の平均値が4.25と画質劣化が気にならないレベルの画質を維持しつつ，9.2～44.7%の伝送ビットレートの削減効果を確認できた．, Resolution of human visual field is the highest at the center of the view field, and it decreases in the visual periphery. There is an image processing technique called Foveated Imaging that reduce the image resolution around the visual periphery to take advantage of human vision properties. In this paper, we develop a video coding transmission system that utilizes Foveated Imaging in order to reduce the video transmission bandwidth while maintaining the image quality perceived by humans. The image quality degradation of proposed videos against reference videos was evaluated on a scale of 1 to 5 using a subjective image quality evaluation method called Degradation Category Rating (DCR) method. The evaluation results indicate the average value of Degradation Mean Opinion Score (DMOS) is 4.25 which suggests little to no effect on image quality, while reducing the video transmission bandwidth by 9.2-44.7%.},
 pages = {1425--1434},
 title = {視覚特性に基づく高効率映像圧縮伝送システム},
 volume = {59},
 year = {2018}
}