Ldr2Hdr: On-the-fly reverse tone mapping of legacy video and photographs

Allan G. Rempel*, Matthew Trentacoste, Helge Seetzen, H. David Young, Wolfgang Heidrich, Lorne Whitehead, Greg Ward

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

141 Scopus citations


New generations of display devices promise to provide significantly improved dynamic range over conventional display technology. In the long run, evolving camera technology and file formats will provide high fidelity content for these display devices. In the near term, however, the vast majority of images and video will only be available in low dynamic range formats. In this paper we describe a method for boosting the dynamic range of legacy video and photographs for viewing on high dynamic range displays. Our emphasis is on real-time processing of video streams, such as web streams or the signal from a DVD player. We place particular emphasis on robustness of the method, and its ability to deal with a wide range of content without user adjusted parameters or visible artifacts. The method can be implemented on both graphics hardware and on signal processors that are directly integrated in the HDR displays.

Original languageEnglish (US)
Article number1276426
JournalACM transactions on graphics
Issue number3
StatePublished - Jul 29 2007
Externally publishedYes


  • Image and video processing - high dynamic range/tone mapping
  • Methods and applications - signal processing

ASJC Scopus subject areas

  • Computer Graphics and Computer-Aided Design


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