| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique that applies local multiscale tone mapping to images of a relatively high dynamic range.SOLUTION: A global ratio operator may be applied to luminance values derived from an input high dynamic range (HDR) image so as to generate a high resolution gray scale ratio image having luminance ratio values. A local multiscale gray scale ratio image may be generated that has a weighted bonding of at least two different gray scale ratio images. Each of the at least two different gray ratio images may be of a different spatial resolution level. Ratio values in the local multiscale gray scale ratio image may be used together with the luminance values derived from the input HDR image so as to generate a tone-mapped gray scale image. |
