Converting a colorimetric transform from an input color space to an output color space

摘要

A method, apparatus and system for transforming a calorimetric adjustment of a sequence of images from an input color space into an output color space includes a color adjustment device for determining a transformation table for converting the input color space of the sequence of images to an output color space, for applying a first order approximation to at least one subset of the sequence of images, the subsets of the sequence of images defined by the transformation table, and if the sequence of images has not reached convergence, for applying a second order approximation to at least one subset of the sequence of images. In one embodiment, the color components of the output color space are defined by a combination of intermediate terms, where the number of the intermediate terms corresponds to the number of input color space components. The transform is configured to survive a video distribution workflow.

主权项

1. A method for transforming a colorimetric adjustment of a sequence of images from an input color space into an output color space comprising:
determining a transformation table for converting the input color space of said sequence of images to a desired output color space; applying a first order approximation to at least one subset of said sequence of images, the subsets of said sequence of images defined by said transformation table; and determining if convergence between at least two of the subsets of said sequence of images has been reached and if not, applying a second order approximation to at least one of the subsets of said sequence of images; wherein the determining and applying steps are performed by at least a processor.