Filtering in a High Dynamic Range (HDR) Context

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Publisher: SMPTE — White Plains, NY
Doc Type: Conference Paper
Content Type: Original Research
Volume: 2013, No. 10, pp. 1–34
Abstract: Many image processing steps involve filters or filter-like constructs (such as wavelets). Filters are used for displacement, such as flowfield displacement or block displacement within codecs. Filters are used for re-sizing, and for detail-band-splitting in resolution hierarchies. Wavelets also are applied in a manner similar to filters, and can be used for detail-band-splitting in some constructions. The Discrete Cosine Transform similarly represents image spatial frequencies in an array of coefficients for such frequencies. When applying filters to pixels, theoretical underpinnings of filter theory often require that the pixels be represented in linear light (gamma 1.0). When extending filter and wavelet techniques to High Dynamic Range (HDR), the general assumptions about acceptability of filtering errors in many common filter uses must be revised to consider very large increases in brightness value differences. Filter errors, especially from negative filter lobes, are often greatly magnified within the intended viewing range. This paper explores filtering practices that improve filter, wavelet, DCT, and other common filtering elements when applied to HDR. Further, we examine the precision necessary to distribute HDR, and we consider quality metrics that might be appropriate for HDR systems.
Publication Date: 2013-10-01
DOI: 10.5594/M001509
Link: https://doi.org/10.5594/M001509
Author(s): Gary DemosImage Essence, LLC, Perris, CA
Keyword(s): HDR
Copyright: © 2013 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

Miller Scott Nezamabadi Mahdi Daly Scott , “Perceptual Signal Coding for More Efficient Usage of Bit Codes” , SMPTE Motion Imaging Journal , Vol 122 Number 4 (May-June 2013 );. EXTERNAL
Demos Gary , “Layered Motion Compensation for Moving Image Compression” , SMPTE Motion Imaging Journal , (January-February 2009 );. EXTERNAL

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Gary Demos; Filtering in a High Dynamic Range (HDR) Context, SMPTE Meetings and Conferences ( October 2013); SMPTE, 2013. Available at https://doi.org/10.5594/M001509

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Gary Demos; Filtering in a High Dynamic Range (HDR) Context, SMPTE Meetings and Conferences ( October 2013); SMPTE, 2013. Available at https://doi.org/10.5594/M001509

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<span class="citation">Gary Demos; <cite>Filtering in a High Dynamic Range (HDR) Context</cite>, SMPTE Meetings and Conferences ( October 2013); SMPTE, 2013. Available at <a href="https://doi.org/10.5594/M001509" target="_blank" rel="noopener">https://doi.org/10.5594/M001509</a></span>

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Gary Demos; Filtering in a High Dynamic Range (HDR) Context, SMPTE Meetings and Conferences ( October 2013); SMPTE, 2013
doi: 10.5594/M001509
url: https://doi.org/10.5594/M001509

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Gary Demos; <cite id="bib-10-5594-m001509">Filtering in a High Dynamic Range (HDR) Context</cite>, SMPTE Meetings and Conferences ( October 2013); SMPTE, 2013
<span class="doi">10.5594/M001509</span>
</li>