REVERSIBLE IMAGE COMPRESSION.

Format:

Book

Thesis/Dissertation

Author/Creator:

GRIM, LARRY BERNARD.

Contributor:

University of Pennsylvania.

Subjects (All):

Computer science.

0984.

Local Subjects:

0984.

Physical Description:

180 pages

Contained In:

Dissertation Abstracts International 41-03B.

System Details:

Mode of access: World Wide Web.

text file

Summary:

The area of image storage is becoming a major problem as higher resolution image devices come into use and as increased use is made of time sequences of images. Additionally, computer processing of images require that the original image be available.

This dissertation examines algorithms which are reversible and can be used to encode images for storage. These algorithms make use of spatial redundancy found in the original in both the X and Y direction and also temporal redundancy between images in a sequence. It deviates from the standard approach to encoding in that it uses only computer length words and half words for the basic unit of storage and not the bit as was done by previous techniques.

The images are first mapped into bit planes. The compression is then done on the individual bit planes. The use of bit planes provides significant advantage over compressing the original pixels.

Notes:

Source: Dissertation Abstracts International, Volume: 41-03, Section: B, page: 1022.

Thesis (Ph.D.)--University of Pennsylvania, 1980.

Local Notes:

School code: 0175.

Access Restriction:

Restricted for use by site license.