Decolorization : Is rgb2gray ( ) Out?

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review

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Detail(s)

Original languageEnglish
Title of host publicationSIGGRAPH Asia 2013 Technical Briefs, SA 2013
PublisherACM 
ISBN (Print)978-1-4503-2629-2
Publication statusPublished - Nov 2013

Conference

TitleSIGGRAPH Asia 2013 Technical Briefs, SA 2013
PlaceHong Kong
CityHong Kong
Period19 - 22 November 2013

Abstract

Decolorization problems originate from the fact that the luminance channel may fail to represent iso-luminant regions in the original color image. Currently all the existing methods suffer from the same weakness - robustness: failure cases can be easily found for each of the methods. This prevents all these methods from being practical for real-world applications. In fact, the luminance conversion (i.e, rgb2gray( ) function in Matlab) performs rather well in practice only with exceptions for failure cases like the iso-luminant regions. Thus a thought-provoking question is naturally raised: can we reach a robust solution by simply modifying the rgb2gray( ) to avoid failures in iso-luminant regions? Instead of assigning fixed channel weights for all images, a more flexible strategy would be choosing channel weights depending on specific images to avoid indiscrimination in iso-luminant regions. Following this strategy, by considering multi-scale contrast preservation, we design an algorithm that can consistently produce "good" results for each color image, among which the "best" one preferred by users can be selected by further involving perceptual contrasts preferences. The results are verified through user study. Copyright © ACM.

Research Area(s)

  • Bilateral filter, Decolorization, Visual perception

Bibliographic Note

Full text of this publication does not contain sufficient affiliation information. With consent from the author(s) concerned, the Research Unit(s) information for this record is based on the existing academic department affiliation of the author(s).

Citation Format(s)

Decolorization : Is rgb2gray ( ) Out? / Song, Yibing; Bao, Linchao; Xu, Xiaobin; Yang, Qingxiong.

SIGGRAPH Asia 2013 Technical Briefs, SA 2013. ACM , 2013. 15.

Research output: Chapters, Conference Papers, Creative and Literary Works (RGC: 12, 32, 41, 45)32_Refereed conference paper (with ISBN/ISSN)peer-review