HOG feature extraction from encrypted images for privacy-preserving machine learning. - Masaki Kitayama; Hitoshi Kiya (CoRR, 2019)

Difficulty in estimating visual information from randomly sampled images. - Masaki Kitayama; Nobutaka Ono; Hitoshi Kiya (GCCE, 2020)

Difficulty in estimating visual information from randomly sampled images. - Masaki Kitayama; Hitoshi Kiya (CoRR, 2020)

Generation of Gradient-Preserving Images allowing HOG Feature Extraction. - Masaki Kitayama; Hitoshi Kiya (ICCE-TW, 2021)