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1. (WO2001039511) IMAGE COMPRESSING DEVICE AND IMAGE DECOMPRESSING DEVICE, AND COMPUTER-READABLE RECORDED MEDIUM ON WHICH PROGRAM FOR ALLOWING COMPUTER TO EXECUTE IMAGE COMPRESSING METHOD AND IMAGE DECOMPRESSING METHOD

Pub. No.:    WO/2001/039511    International Application No.:    PCT/JP2000/008060
Publication Date: Fri Jun 01 01:59:59 CEST 2001 International Filing Date: Thu Nov 16 00:59:59 CET 2000
IPC: G06T 9/00
H04N 1/387
H04N 1/41
H04N 1/46
H04N 1/60
H04N 1/64
H04N 11/04
H04N 19/00
H04N 19/103
H04N 19/136
H04N 19/14
H04N 19/176
H04N 19/186
H04N 19/196
H04N 19/80
H04N 19/85
H04N 19/90
H04N 19/91
Applicants: SHARP KABUSHIKI KAISHA

KAGECHI, Kensaku

SAIGA, Hisashi

IWASAKI, Keisuke

Inventors: KAGECHI, Kensaku

SAIGA, Hisashi

IWASAKI, Keisuke

Title: IMAGE COMPRESSING DEVICE AND IMAGE DECOMPRESSING DEVICE, AND COMPUTER-READABLE RECORDED MEDIUM ON WHICH PROGRAM FOR ALLOWING COMPUTER TO EXECUTE IMAGE COMPRESSING METHOD AND IMAGE DECOMPRESSING METHOD
Abstract:
An image compressing device for encoding an image efficiently without causing apparent color misregistration compresses blocks of luminance component image data and blocks of color difference component data, comprising a resolution determining section (38, 142) which adaptively determines the resolution for each reduced block of the data according to a predetermined criteria and generates resolution information, a data generating section (44) which is connected to the resolution determining section (38, 142) and generates data on each reduced block based on the resolution information, and an encoding section (42, 48A, 48B) which is connected to the resolution determining section (38, 142) and the data generating section (44) and encodes the resolution information and the outputs of the data generating section (44).