Bandwidth compression of noisy images
Abstract
The effect of additive noise on Discrete Fourier Transform of pictorial data (2DFT) must be considered in several important problems such as filtering, enhancement and bandwidth compression. This paper investigates the statistical properties of the corrupted 2DFT coefficients, and the error involved in reconstruction when a subset of these coefficients is employed for the purpose. The latter being often the case, the present analysis provides a rational basis for frequency selection and filter specification. Application of an F-test quantifies the reliability of filtering or bandwidth compression.
- Publication:
-
Computers and Electrical Engineering
- Pub Date:
- November 1975
- Bibcode:
- 1975CEE.....2..275A
- Keywords:
-
- Bandwidth;
- Digital Filters;
- Fourier Transformation;
- Image Enhancement;
- Random Noise;
- Signal Processing;
- Computer Techniques;
- Computerized Simulation;
- Photointerpretation;
- Reliability Engineering;
- Statistical Analysis;
- Stochastic Processes;
- Instrumentation and Photography