METHOD, APPARATUS AND SYSTEM FOR ENCODING VIDEO DATA FOR SELECTED VIEWING CONDITIONS

摘要

A method for encoding video data into a video bitstream using a video capture device having a brightness range limited output determines capture conditions for the capture device, the capture conditions including an ambient capture light level and a measured light level of captured video data. The method adjusts a brightness adaptation model using at least the measured light level and the ambient capture light level, the brightness adaption model defining a temporally variable peak luminance for a viewer of video captured using the capture device, and then determines a tone map such that where the measured light level exceeds a determined maximum light level the tone map is modified to reduce brightness, the maximum light level is determined using the brightness adaptation model. The captured video data is then encoded into the video bitstream using the determined tone map.

主权项

1. A method for encoding video data into a video bitstream using a video capture device having a brightness range limited output, the method comprising:
determining capture conditions for the capture device, the capture conditions including an ambient capture light level and a measured light level of captured video data; adjusting a brightness adaptation model using at least the measured light level and the ambient capture light level, the brightness adaption model defining a temporally variable peak luminance for a viewer of video captured using the capture device; determining a tone map such that where the measured light level exceeds a determined maximum light level the tone map is modified to reduce brightness, the maximum light level is determined using the brightness adaptation model; and encoding captured video data into the video bitstream using the determined tone map.