Hello, We are in the process of implementing HDR rendering support in the Weston display compositor [1] (HDR discussion here [2]). When HDR and SDR surfaces like a video buffer and a subtitle buffer are presented together, the composition would take place as follows: - If the display does not support HDR metadata: in-coming HDR surfaces would be tone mapped using opengl to SDR and blended with the other SDR surfaces. We are currently using the Hable operator for tone mapping. - If the display supports setting HDR metadata: SDR surfaces would be tone mapped to HDR and blended with HDR surfaces.
The literature available for SDR->HDR tone mapping varies from simple linear expansion of luminance to CNN based approaches. We wanted to know your recommendations for an acceptable algorithm for SDR->HDR tone mapping. Any help is greatly appreciated! [1] https://gitlab.freedesktop.org/wayland/weston [2] https://lists.freedesktop.org/archives/wayland-devel/2019-January/039809.html Thank you Regards Harish Krupo _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel