High Dynamic Range (HDR) television promises to display higher brightness and deeper black levels and thus more vivid and realistic images. However, home video distribution and video broadcasting were historically designed for what we now call standard dynamic range screens (SDR). In order to display SDR content on an HDR screen, it is explicitly or implicitly converted, in a process called inverse tone mapping (iTMO). This paper's goal is to assess the perceived quality of converted SDR content in comparison to natively graded HDR content. In doing so, this paper aims to enable content creators/distributors to make informed choices between creating/broadcasting HDR content or relying on conversion. To this end, a psychophysical experiment was performed to tests how viewers evaluate the difference between natively graded HDR and a set of SDR
Due to rapid technological progress in High Dynamic Range (HDR) video capture and display, perceived contrast by users of HDR technology is becoming increasingly important in the visual signal processing chain. More specifically, when considering a higher contrast and brightness range in a cinema context, it is essential to understand the limits of visual perception under specific cinema conditions and brightness levels. An experiment (N = 36) was conducted to test the perceivable dynamic range in a cinema environment. We investigated how the perceivable dynamic range evolves with various background levels and different strengths and shapes of local highlights. Results showed a significant effect of image composition and the average picture level on the perceivable near black dynamic range.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.