A Unified Approach To The Change Of Resolution: Space And Grey Level

Michael Werman; Shmuel Peleg; Hillel Rom

doi:10.1117/12.944709

24 June 1988 A Unified Approach To The Change Of Resolution: Space And Grey Level

Michael Werman, Shmuel Peleg, Hillel Rom

Proceedings Volume 0901, Image Processing, Analysis, Measurement, and Quality; (1988) https://doi.org/10.1117/12.944709
Event: 1988 Los Angeles Symposium: O-E/LASE '88, 1988, Los Angeles, CA, United States

Abstract

Multiple resolution analysis of images is a current trend in computer vision. In most cases, only spatial resolution has been considered. However, image resolution has an additional aspect: grey level, or color, resolution. Color resolution has traditionally been considered in the area of computer graphics. By defining a suitable measure for the comparison of images, changes in resolution can be treated with the same tools as changes in color resolution. A grey tone image, for example, can be compared with a half-tone image having only two colors (black and white), but of higher spatial resolution. An important application can be in pyramids, one of the most commonly used multiple (spatial) resolution schemes, where this approach provides a tool to change the color resolution as well. Increasing color resolution while reducing spatial resolution to retain more image details and prevent aliasing is an example of the possibility to find optimal combinations of resolution reduction, spatial and color, to best fit an application.

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Michael Werman, Shmuel Peleg, and Hillel Rom "A Unified Approach To The Change Of Resolution: Space And Grey Level", Proc. SPIE 0901, Image Processing, Analysis, Measurement, and Quality, (24 June 1988); https://doi.org/10.1117/12.944709

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