Ldr2Hdr

Allan G. Rempel, Matthew Trentacoste, Helge Seetzen, H. David Young, Wolfgang Heidrich, Lorne Whitehead, Greg Ward
2007 ACM SIGGRAPH 2007 papers on - SIGGRAPH '07  
Figure 1 : Output of our on-the-fly reverse tone mapping algorithm. Left: low dynamic range input image. Center left: a visualization of the brightness enhancement function computed by our method. Center right: two virtual exposures of the resulting HDR image with a contrast of 9300 : 1. Right: the same image shown on an HDR display, using a 10% semi-transparent filter to show details in bright regions. Abstract New generations of display devices promise to provide significantly improved
more » ... 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.
doi:10.1145/1275808.1276426 fatcat:xlxadggdknbedc7vj3y5ux3rwy