1 January 1996 Digital filtering of images using the discrete sine or cosine transform
Author Affiliations +
Optical Engineering, 35(1), (1996). doi:10.1117/1.600882
The discrete sine and cosine transforms (DSTS and DCTS) are powerful tools for image compression. They would be even more useful if they could be used to perform convolution. As we have recently shown, these transforms do possess a convolution-multiplication property and therefore can be used to perform digital filtering. The convolution is a special type, called symmetric corrvo/ution. This paper reviews the concepts of symmetric convolution and then elaborates on how to use the operation, and thereby DSTS and DCTS, to implement digital filters for images. An indication of how to compute the transforms and what is the complexity of their use is also given.
Stephen A. Martucci, "Digital filtering of images using the discrete sine or cosine transform," Optical Engineering 35(1), (1 January 1996). http://dx.doi.org/10.1117/1.600882


Surface plasmons

Optical filters

Digital filtering

Image filtering

Finite impulse response filters

Image processing


X-pinch source size measurements
Proceedings of SPIE (January 07 2004)
A Tactile Sensing Finger Tip for a Dextrous Hand
Proceedings of SPIE (March 27 1987)
Graphical Operations In A Hierarchical Parallel Computer
Proceedings of SPIE (January 17 1985)

Back to Top