Illumination Watermarking Technique Using Orthogonal Transforms. - Yasunori Ishikawa; Kazutake Uehira; Kazuhisa Yanaka (IAS, 2009)

Optical watermarking robust to object with low-reflectance. - Kazutake Uehira; Yasunori Ishikawa; Kazuhisa Yanaka (ICME, 2009)

Optical watermarking technique robust to geometrical distortion in image. - Yasunori Ishikawa; Kazutake Uehira; Kazuhisa Yanaka (ISSPIT, 2010)

Robust optical watermarking technique by optimizing the size of pixel blocks of orthogonal transform. - Yasunori Ishikawa; Kazutake Uehira; Kazuhisa Yanaka (IAS, 2011)

Protection of 3D Objects against Illegal Photography using Optical Watermarking Technique with Spatially Modulated Illumination. - Yasunori Ishikawa; Kazutake Uehira; Kazuhisa Yanaka (IMAGAPP/IVAPP, 2011)

A technique of time domain sequential data embedding into real object image using spatially modulated illumination. - Yasunori Ishikawa; Kazutake Uehira; Kazuhisa Yanaka (ISSPIT, 2011)

Robustness against defocusing of images in optical watermarking technique. - Yasunori Ishikawa; Kazutake Uehira; Kazuhisa Yanaka (IAS, 2012)