Title:
IMAGE COMPRESSION DEVICE
Document Type and Number:
Japanese Patent JP2011254257
Kind Code:
A
Abstract:
To provide an image compression device capable of improving compressibility while suppressing deterioration of image quality.
An input unit 1 divides input image data into a plurality of blocks so as to have overlapped portions between adjacent blocks. An orthogonal conversion unit 2 orthogonally converts each block divided by the input unit 1. A quantization coefficient setting unit 4 sets a quantization coefficient to each piece of frequency data of each block, and a quantization unit 3 quantizes the frequency data of each block by use of the quantization coefficient.
Inventors:
KOBASHI ATSUSHI
Application Number:
JP2010126186A
Publication Date:
December 15, 2011
Filing Date:
June 01, 2010
Export Citation:
Assignee:
OLYMPUS CORP
International Classes:
H04N1/41; H03M7/30; H04N19/126; H04N19/167; H04N19/176; H04N19/196; H04N19/60; H04N19/91; H04N19/93
Attorney, Agent or Firm:
Kurata Masatoshi
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Katsumura Hiro
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Takuzo Ichihara
Yamashita Gen
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Katsumura Hiro
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Takuzo Ichihara
Yamashita Gen
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