Title

Astronomical image manipulation in the discrete wavelet transform domain

Document Type

Article

Publication Date

4-1-2000

Publication Title

Journal of Electronic Imaging

Volume

9

Issue

2

First page number:

101

Last page number:

109

Abstract

Traditionally, processing an image stored in the compressed form requires decompression first. Following manipulations, the processed image is recompressed for storage. Manipulating images in the semicompressed or transform domain appears to be an effective way to reduce processing time. In this paper, new algorithms for image interpolation in the Haar transform domain are proposed. These algorithms perform interpolation by computing a new subband using two different approaches. Experimental results indicate that in addition to running faster in the transform domain, the new algorithms produce images with qualities comparable to those in the spatial domain. Applications are seen in conjunction with Haar-based transforms such as the HCOMPRESS which is commonly used for compression in space science imagery.

Keywords

Computer algorithms; Image analysis; Image compression; Image processing; Imaging systems in astronomy--Computer programs

Disciplines

Engineering | Mechanical Engineering | Other Astrophysics and Astronomy | Signal Processing

Language

English

Permissions

Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

Identifier

DOI: 10.1117/1.482731

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