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Featured researches published by Masami Ogata.


international conference on consumer electronics | 2001

Dynamic range compression based on illumination compensation

Masami Ogata; Takashi Tsuchiya; Takeshi Kubozono; Kazuhiko Ueda

This paper presents a new approach for effectively compressing the dynamic range of a visual scene while preserving the local contrast in order to reproduce a high quality image on devices with limited dynamic range. In this method, dynamic range compression is performed through a reduction of the illumination effect, by taking into account the characteristics of the human visual system. To precisely extract the illumination component within a reasonable complexity, a multi-scale nonlinear filtering scheme, referred to here as nonlinear multi-scale retinex (NMR), was developed.


Archive | 2001

Device and method for image processing

Takashi Tsuchiya; Masami Ogata; Kazuhiko Ueda


Archive | 1996

Predictive sub-band video coding and decoding using motion compensation

Masami Ogata; Teruhiko Suzuki; Tak Yen Tong


Archive | 1996

Subband image coding and decoding

Tak Yen Tong; Masami Ogata; Teruhiko Suzuki


Archive | 1996

Recursively splitting the low-frequency band with successively fewer filter taps in methods and apparatuses for sub-band encoding, decoding, and encoding and decoding

Masami Ogata; Teruhiko Suzuki; Tak Yen Tong


Archive | 2001

Image processing circuit and method for processing image

Takashi Tsuchiya; Masami Ogata; Kazuhiko Ueda


Archive | 2001

Data encoding method and apparatus, data decoding method and apparatus and recording medium

Masami Ogata


Archive | 1998

Image processing method, image processing apparatus, noise removing method, and noise removing apparatus

Masami Ogata


Archive | 2002

Method and apparatus for processing image

Masami Ogata; Kazuhiko Ueda


Archive | 1996

Picture encoding device and method thereof, picture decoding device and method thereof, and recording medium

Teruhiko Suzuki; Masami Ogata; Tak Yen Tong

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