20 August 1979 Spatial Filtering Using 3 X 3 Kernel Convolutions
Author Affiliations +
Proceedings Volume 0178, Smart Sensors; (1979); doi: 10.1117/12.957276
Event: Technical Symposium East, 1979, Washington, D.C., United States
The equivalence of 3 x 3 linear discrete convolution filtering to spatial frequency domain multiplication is reviewed in this paper. DPCM (Differential Pulse Code Modulation) is simply a low pass filter in the frequency domain. More complex 3 x 3 filters allow the choice of a band stop locus in the frequency domain in order to reduce unwanted spatial frequency components. This real time spatial filtering is readily implemented using a multitapped CCD delay line coefficients on-chip with a CCD imager.
© (1979) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. T. Carlo, J. E. Hall, "Spatial Filtering Using 3 X 3 Kernel Convolutions", Proc. SPIE 0178, Smart Sensors, (20 August 1979); doi: 10.1117/12.957276; https://doi.org/10.1117/12.957276


Spatial frequencies

Linear filtering

Charge-coupled devices

Spatial filters

Imaging systems

Image filtering


The Binomial Window
Proceedings of SPIE (December 23 1980)
Scalable architectures for image processing
Proceedings of SPIE (August 06 1993)
Symmetric edge enhancement in error diffusion
Proceedings of SPIE (December 21 1999)
A Relaxation Based Adaptive Filtering Algorithm
Proceedings of SPIE (December 04 1984)

Back to Top