Zone-based tone mapping

摘要

A method of tone mapping high dynamic range images for display on low dynamic range displays wherein a high dynamic range image is first accessed. The high dynamic range image is segmented into different regions such that each region is represented by a matrix, where each element of the matrix is a weight or probability of a pixel. An exposure of each region is determined or calculated and the exposure values are applied to the regions responsive to the weight or probability. The different regions are then fused together to obtain a final tone mapped image.

主权项

1. A method of tone mapping high dynamic range images for display on low dynamic range displays comprising:
accessing a high dynamic range image; segmenting the high dynamic range image into different regions such that each region is represented by a matrix, where each element of the matrix is a weight of a pixel; determining exposure of each region according to a zone system that assigns one of a fixed set of discrete exposure values to each region; applying exposure values to the regions responsive to the weight; fusing the different regions together to obtain a final tone mapped image; and providing a user interface for the user to adjust a zone for individual regions.