Space-Frequency Distributions in the Analysis and Modeling of Early Vision

TitleSpace-Frequency Distributions in the Analysis and Modeling of Early Vision
Publication TypeTechnical Report
Year of Publication1990
AuthorsCristobal, G.
Other Numbers610

The use of the joint space-spatial frequency representations has recently received considerable attention; especially in those areas of science and engineering where nonstationary signals appear. In that case, local energy distribution representations based in the local spectra computation would be more appropriate. The Wigner Distribution (WD) which gives a joint representation in the space and spatial frequency domain entails a rigorous mathematical framework in the study of these local representations. In this paper, texture recognition is performed through the extraction of features from the WD and a comparative study with other methods is presented. A review of the state-of-the-art of the joint representations in different areas of research namely signal, speech and vision processing is presented. Afterward, the importance of these distributions in the modeling of early vision processes is considered, and a brief review about the physiological findings is presented in order to have a quantitative measure of the degree of biological plausibility.

Bibliographic Notes

ICSI Technical Report TR-90-046

Abbreviated Authors

G. Cristobal

ICSI Publication Type

Technical Report