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4 March 2008 Appearance of images
Karen K. De Valois, Tatsuto Takeuchi, Thomas D. Wickens
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Proceedings Volume 6806, Human Vision and Electronic Imaging XIII; 680605 (2008) https://doi.org/10.1117/12.784143
Event: Electronic Imaging, 2008, San Jose, California, United States
Abstract
What makes an image appear to be a veridical representation of a real scene? Knowing what is necessary to produce a "good" image also aids in the design of more efficient compression algorithms. We review our earlier work on video compression and demonstrate the substantial savings and excellent image quality produced by spatial low-pass filtering of most (but not all) of the individual frames. Currently, we work with still images. An example will show that simple filtering can produce unexpected changes in the perceptual interpretation of a complex scene. I will describe and demonstrate a new compression method we are developing based on the assumption that the fine structure in the amplitude domain (and perhaps in phase, as well) can be of minimal importance in conveying the essence of a scene. We find that a complex image can be reproduced surprisingly well by compressing the entire spatial frequency amplitude spectrum to a very small number of terms.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Karen K. De Valois, Tatsuto Takeuchi, and Thomas D. Wickens "Appearance of images", Proc. SPIE 6806, Human Vision and Electronic Imaging XIII, 680605 (4 March 2008); https://doi.org/10.1117/12.784143
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Cited by 2 scholarly publications.
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KEYWORDS
Spatial frequencies
Image filtering
Linear filtering
Spatial filters
Image segmentation
Image compression
Photography
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