Dr. Hiromasa Yamashita Profile

Dr. Hiromasa Yamashita

at AIR WATER INC.

SPIE Involvement:

Conference Program Committee | Author

Proceedings Article | 13 March 2024 Presentation + Paper

Needle-sized rigid endoscope using graded-index plastic optical fiber

Hiromasa Yamashita, Yasuhiro Koike, Masaya Nakamura

Proceedings Volume 12909, 129090H (2024) https://doi.org/10.1117/12.3008924

KEYWORDS: Endoscopes, Polymer optical fibers, Cameras, Glasses, Refractive index, Prototyping, Light sources and illumination, Surgery, Optical fibers, Relays

Read Abstract +

Proceedings Article | 14 March 2023 Presentation + Paper

8K-UHD medical image remote transmission with low latency encoding and decoding

Hiromasa Yamashita, Yasushi Hara, Shigehiro Fuseya, Yasuhisa Kato, Mina Yamazaki, Takashi Kodama, Satoru Furuyama, Hironori Sakou

Proceedings Volume 12444, 124440A (2023) https://doi.org/10.1117/12.2655686

KEYWORDS: Endoscopes, Image transmission, Surgery, Cameras, Image compression, Medical imaging, Endoscopy, Image processing, Video, Image resolution

Read Abstract +

Proceedings Article | 4 March 2022 Presentation + Paper

8K-UHD medical expansion with development of an 8K-UHD encoding recorder

Hiromasa Yamashita, Junichi Maruyama

Proceedings Volume 12025, 1202503 (2022) https://doi.org/10.1117/12.2613348

KEYWORDS: Video, Surgery, Video compression, Video coding, Image quality, Medical imaging, Endoscopes

Read Abstract +

Proceedings Article | 21 February 2020 Presentation + Paper

8K ultra-high definition medical application: development of new endoscope and microscope

Hiromasa Yamashita

Proceedings Volume 11305, 113050T (2020) https://doi.org/10.1117/12.2552163

KEYWORDS: Surgery, Cameras, Endoscopy, Endoscopes, Microscopes, Video, Eye, Imaging systems, Head, Image resolution

Read Abstract +

SPIE Journal Paper | 11 July 2018 Open Access

55-in. 8K4K IPS-LCDs with wide viewing angle, high frame frequency, wide color gamut, and stereoscopic

Ryutaro Oke, Junichi Maruyama, Tomohiro Murakoso, Masahiro Ishii, Ikuo Hiyama, Yoshihisa Kato, Hiromasa Yamashita, Kenkichi Tanioka, Toshio Chiba

OE, Vol. 57, Issue 07, 075102, (July 2018) https://doi.org/10.1117/12.10.1117/1.OE.57.7.075102

KEYWORDS: LCDs, Semiconductor lasers, Surgery, 3D displays, Avalanche photodetectors, Transmittance, Optical engineering, Light sources, Amorphous silicon, Image quality

Read Abstract +

DOWNLOAD PAPER