Patent ID: 8537175
Filing Date: 2013-09-17
Classification: G06T

Abstract:
1. A computer-implemented method for enhancing a video comprising: determining scene boundaries in the video; identifying a scene of the video based on the scene boundaries, the identified scene having a plurality of frames bounded by two of the determined scene boundaries; determining a global distribution of luminance values of pixels throughout the plurality of frames in the identified scene; determining a local distribution of luminance values of pixels in a frame within the identified scene; determining a global white level and a global black level from the global distribution of luminance values of pixels throughout the plurality of frames in the identified scene; determining a local white level and a local black level from the local distribution of luminance values of the pixels within the frame; determining a weighted white level from a weighted combination of the local white level and the global white level; determining a weighted black level from a weighted combination of the local black level and the global black level; generating enhanced luminance values of the pixels in the frame of the identified scene using the weighted white level and the weighted black level; and outputting an enhanced video having the enhanced pixel luminance values.