Image analysis – Image compression or coding – Transform coding
Patent
1996-09-06
1999-06-22
Coles, Edward L.
Image analysis
Image compression or coding
Transform coding
382174, 382232, 382233, 358426, 358427, 358433, 358448, 358453, G06K 936, H04N 141, H04N 1415, H04N 140
Patent
active
059150467
ABSTRACT:
An encoding method is provided with which users can select picture quality and a quantity of data in multiple stages and with which an image of higher picture quality can be regenerated by scalable selection, i.e., by further adding data to compressed data that can be decoded. Image data is compressed using: means (62) for segmenting an original image into a plurality of object regions where each region pixels all correlate with one another and for determining a hierarchical structure of the object regions; means (63) for approximating each of the object regions with at least one polygonal surface so that errors of a intensity of luminance and chrominances in each the pixel are less than a predetermined threshold value; means (64) for obtaining residual images by subtracting the approximated image from the original image or by subtracting a decompressed image of a compressed nth-order residual image from the original nth-order residual image; means (65) for compressing the nth-order residual image (n.gtoreq.1) by encoding; means (66) for storing the approximated image and the coded nth-order residual image; and means (67) for decompressing the compressed nth-order residual image from the nth-order residual image.
REFERENCES:
patent: 3905045 (1975-09-01), Nickel
patent: 4947447 (1990-08-01), Miyaoka et al.
patent: 5282255 (1994-01-01), Bovik et al.
patent: 5363107 (1994-11-01), Gertz et al.
Echigo Tomio
Hong Jung-Kook
Ioka Mikihiro
Maeda Junji
Coles Edward L.
Drumheller Ronald L.
International Business Machines - Corporation
Wallerson Mark
LandOfFree
System for and method of processing digital images does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System for and method of processing digital images, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for and method of processing digital images will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1713718