Paper
1 September 1990 Statistical dependence between orientation filter outputs used in a human-vision-based image code
Bernhard Wegmann, Christoph Zetzsche
Author Affiliations +
Proceedings Volume 1360, Visual Communications and Image Processing '90: Fifth in a Series; (1990) https://doi.org/10.1117/12.24279
Event: Visual Communications and Image Processing '90, 1990, Lausanne, Switzerland
Abstract
We present an image coding scheme based on the properties of the early stages of the human visual system. The image signal is decomposed via even and odd symmetric, frequency and orientation selective band-pass filters in analogy to the quadrature phase simple cell pairs in the visual cortex. The resulting analytic signal is transformed into a local amplitude and local phase representation in order to achieve a better match to its signal statistics. Both intra filter dependencies of the analytic signal and inter filter dependencies between different orientation filters are exploited by a suitable vector quantization scheme. Inter orientation filter dependencies are demonstrated by means of a statistical evaluation of the multidimensional probability density function. The results can be seen as an empirical confirmation of the suitability of vector quantization in subband coding. Instead of generating a code book by use of an conventional design-algorithm, we suggest a feature specific partitioning of the multidimensional signal space matched to the properties of human vision. Using this coding scheme satisfactory image quality can be obtained with about 0.78 bit/pixel.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Bernhard Wegmann and Christoph Zetzsche "Statistical dependence between orientation filter outputs used in a human-vision-based image code", Proc. SPIE 1360, Visual Communications and Image Processing '90: Fifth in a Series, (1 September 1990); https://doi.org/10.1117/12.24279
Lens.org Logo
CITATIONS
Cited by 33 scholarly publications.
Advertisement
Advertisement
RIGHTS & PERMISSIONS
Get copyright permission  Get copyright permission on Copyright Marketplace
KEYWORDS
Quantization

Image filtering

Image processing

Statistical analysis

Vector spaces

Human vision and color perception

Visual communications

RELATED CONTENT

New technique of linear phase QMF filter design for subband...
Proceedings of SPIE (September 01 1990)
Some fundamental experiments in subband coding of images
Proceedings of SPIE (November 01 1991)
Source coding of HDTV with compatibility to TV
Proceedings of SPIE (September 01 1990)
Two Channel Image Coding Scheme
Proceedings of SPIE (November 01 1989)
A Low-Rate Video Coding Based on DCT/VQ
Proceedings of SPIE (November 01 1989)

Back to Top