S
Sayaka Shiota
Researcher at Tokyo Metropolitan University
Publications - 76
Citations - 826
Sayaka Shiota is an academic researcher from Tokyo Metropolitan University. The author has contributed to research in topics: Computer science & Noise. The author has an hindex of 13, co-authored 66 publications receiving 562 citations. Previous affiliations of Sayaka Shiota include Nagoya Institute of Technology.
Papers
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Journal ArticleDOI
An Encryption-then-Compression System for JPEG/Motion JPEG Standard
Journal ArticleDOI
An Encryption-then-Compression System for Lossless Image Compression Standards
TL;DR: This letter proposes an Encryption-then-Compression system using JPEG XR/JPEG-LS friendly perceptual encryption method, which enables to be conducted prior to the MPEG-4 standard used as an international standard lossless compression method.
Proceedings ArticleDOI
Voice liveness detection algorithms based on pop noise caused by human breath for automatic speaker verification
Sayaka Shiota,Fernando Villavicencio,Junichi Yamagishi,Nobutaka Ono,Isao Echizen,Tomoko Matsui +5 more
TL;DR: Pop noise detection algorithms are proposed and it is shown through an experimental study that they can be used to discriminate live voice signals from artificial ones generated by means of speech synthesis techniques.
Proceedings ArticleDOI
An encryption-then-compression system for JPEG standard
TL;DR: This paper proposes an Encryption-then-Compression system using a JPEG-friendly perceptual encryption method, which enables to be conducted prior to JPEG compression, and can provides approximately the same compression performance as that of JPEG compression without any encryption.
Proceedings ArticleDOI
Super-Resolution Using Convolutional Neural Networks Without Any Checkerboard Artifacts
TL;DR: Wang et al. as discussed by the authors proposed a condition to avoid the checkerboard artifacts in super-resolution methods, which can be applied to CNNs due to the nonlinearity of CNNs.