A Digital Noise Reducer for Encoded NTSC Signals

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: Until recently, most of the random noise problems that have long plagued television engineers could only be attacked at the source. The recent advent of practical digital television technology, however, now makes it possible to process a television signal on an element-by-element basis. The noise reduction system described in this paper uses a digital frame store operating as an adaptive recursive filter, under the control of a motion detector employing comb filtering and signal modification. Using these techniques, an improvement of 15 dB can readily be achieved without introducing objectionable artifacts into the picture. Among the many areas of application of the digital noise reducer are: improvement of ENG material (both live and taped, especially at low light levels); processing of multigeneration 1-in or 2-in videotape; microwave reception; CATV satellite reception; telecine film-grain reduction (monochrome and color); and off-air reception.
Publication Date: 1978-03-01
DOI: 10.5594/J17406
Link: https://doi.org/10.5594/J17406
Author(s): R. H. McMann, S. Kreinik, J. K. Moore, A. Kaiser, J. Rossi

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R. H. McMann, S. Kreinik, J. K. Moore, A. Kaiser, and J. Rossi; A Digital Noise Reducer for Encoded NTSC Signals, SMPTE Journal ( Volume: 87, Issue: 3, March 1978); SMPTE, 1978. Available at https://doi.org/10.5594/J17406

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R. H. McMann, S. Kreinik, J. K. Moore, A. Kaiser, and J. Rossi; A Digital Noise Reducer for Encoded NTSC Signals, SMPTE Journal ( Volume: 87, Issue: 3, March 1978); SMPTE, 1978. Available at https://doi.org/10.5594/J17406

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<span class="citation">R. H. McMann, S. Kreinik, J. K. Moore, A. Kaiser, and J. Rossi; <cite>A Digital Noise Reducer for Encoded NTSC Signals</cite>, SMPTE Journal ( Volume: 87, Issue: 3, March 1978); SMPTE, 1978. Available at <a href="https://doi.org/10.5594/J17406" target="_blank" rel="noopener">https://doi.org/10.5594/J17406</a></span>

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R. H. McMann, S. Kreinik, J. K. Moore, A. Kaiser, and J. Rossi; A Digital Noise Reducer for Encoded NTSC Signals, SMPTE Journal ( Volume: 87, Issue: 3, March 1978); SMPTE, 1978
doi: 10.5594/J17406
url: https://doi.org/10.5594/J17406

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<li>
R. H. McMann, S. Kreinik, J. K. Moore, A. Kaiser, and J. Rossi; <cite id="bib-10-5594-j17406">A Digital Noise Reducer for Encoded NTSC Signals</cite>, SMPTE Journal ( Volume: 87, Issue: 3, March 1978); SMPTE, 1978
<span class="doi">10.5594/J17406</span>
</li>