Hdr Video Coding Based On A Temporally Constrained Tone Mapping Operator

Given its potential for more realistic rendering and enhaneed user experienee, High Dynamic Range (HDR) imaging is raising a lot of interest both in industry and academia. In this context, efficient representation and coding teehniques are needed, as HDR video entails signifieantly higher raw data rate. In this paper, we present a tempo rally constrained cotent-adaptive Tone Mapping Operator (TMO) in order to convert the input HDR video into a redueed bit depth video sequenee which is then eneoded using High Efficieney Video Coding (HEVC). As the proposed TMO simultaneously takes into account the statistical charaeteristics of the input frame while better preserving temporal coherenee of the tone mapped video sequenee, it leads to improved coding efficieney. Experimental results show that the proposed teehnique compares favorably with existing methods in terms of rate-distortion when using the HDR-VDP-2.2.1 quality metric.