Video Compression and Noise Reduction using Transform/Subband Coding and Adaptive Amplitude Modulation
This paper presents in a unifying and tutorial manner, the basic ideas behind transform and sub-band representations of a signal. Although transform and subband representations appear to be different, we discuss how, in fact, they are equivalent. This theoretical relationship gives useful insights into the design of video processing and compression systems. An application of this result to the design of an adaptive amplitude modulation/demodulation (AM/DM) system for noise reduction of images is then described. We discuss the AM noise reduction technique for additive noise, and then present a method to reduce the AM side information by exploiting the transform representation of an image.
- Published
- 1991-02
- Content type
- Original Research
- DOI
- 10.5594/M00910
- ISBN
- 978-1-61482-919-5
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