Abstract
Gain map is a set of techniques that provide a consistent high dynamic range (HDR) appearance of visual content across devices based on an adaptation of the content to the capabilities of the display. When gain maps are applied to video, the reconstructed video frames require two decodes, one for the base frame and another for the gain-map frame, thereby doubling processing requirements. This disclosure describes techniques that reduce the number of decodes in gain-mapped video by scaling down the resolution of the gain-map frames and by packing them together into one frame. Gain map decodes that are conventionally performed once per frame are performed once for the number of packed gain-map frames, thereby substantially reducing the number of decodes per second and reducing the computational complexity of gain-mapped video.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Recommended Citation
NA, "Computationally Efficient HDR Video Using a Packed Video Gain Map", Technical Disclosure Commons, (September 26, 2024)
https://www.tdcommons.org/dpubs_series/7380