Electronic Detection and Concealment of Film Dirt

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPTE
Volume: 94, No. 6, pp. 642–647
Abstract: Film, as an image source for television, has several inherent imperfections, all of which can, at least in theory, be minimized electronically. Specialized equipment is already available to minimize color errors and film grain. This article describes a method of detecting and concealing dirt. The equipment can detect the majority of dirt particles in typical 16mm film with negligible motion impairment, missing only the largest. An alternative choice of operating parameters allows detection of all dirt sizes, but with occasional motion impairment during rapid motion. Concealment is achieved by substituting a simple interpolation from the two adjacent frames. The equipment is currently being field tested by the BBC.
Publication Date: 1985-06-01
DOI: 10.5594/J07936
ISSN: Print: 0036-1682
Link: https://doi.org/10.5594/J07936
Author(s): Richard StoreyBritish Broadcasting Corp., Surrey, England
Copyright: © 1985 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1. Drewery J. O. Storey R. Tanton N. E. , “Video Noise Reduction,” Bbc Research Dept. , Report No. 1984/7, 1984 . EXTERNAL
2. Childs I. Sanders J. R. , “New Capabilities for Line-Array Ccd Telecines” Smpte J. , 86 : 1294 – 1301 , Dec. 1983 . EXTERNAL
3. Storey R. , “Electronic Detection and Concealment of Film Dirt,” Bbc Research Dept. , Report No. 1985/4, 1985 . EXTERNAL
4. Storey R. Childs I. , “Unsteadiness Quantifier for Television Pictures Taken from Film,” British Patent Specification No. 2 139 037. EXTERNAL
5. Storey R. , “Electronic Film Dirt Detection,” British Patent Specification No. 2 139 039. EXTERNAL

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Richard Storey; Electronic Detection and Concealment of Film Dirt, SMPTE Journal ( Volume: 94, Issue: 6, June 1985); SMPTE, 1985. Available at https://doi.org/10.5594/J07936

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Richard Storey; Electronic Detection and Concealment of Film Dirt, SMPTE Journal ( Volume: 94, Issue: 6, June 1985); SMPTE, 1985. Available at https://doi.org/10.5594/J07936

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Richard Storey; Electronic Detection and Concealment of Film Dirt, SMPTE Journal ( Volume: 94, Issue: 6, June 1985); SMPTE, 1985. Available at https://doi.org/10.5594/J07936

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<span class="citation">Richard Storey; <cite>Electronic Detection and Concealment of Film Dirt</cite>, SMPTE Journal ( Volume: 94, Issue: 6, June 1985); SMPTE, 1985. Available at <a href="https://doi.org/10.5594/J07936" target="_blank" rel="noopener">https://doi.org/10.5594/J07936</a></span>

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Richard Storey; Electronic Detection and Concealment of Film Dirt, SMPTE Journal ( Volume: 94, Issue: 6, June 1985); SMPTE, 1985
doi: 10.5594/J07936
url: https://doi.org/10.5594/J07936

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<li>
Richard Storey; <cite id="bib-10-5594-j07936">Electronic Detection and Concealment of Film Dirt</cite>, SMPTE Journal ( Volume: 94, Issue: 6, June 1985); SMPTE, 1985
<span class="doi">10.5594/J07936</span>
</li>