Creation of a color profile of an image

摘要

Techniques for accurate color representation of images stored within a social networking system. In an embodiment, an error metric and a target error threshold are determined. A binary search algorithm and a simulated annealing algorithm are performed. A color profile for transforming an image in a first color space to a second color space is created based on the binary search algorithm, the simulated annealing algorithm, the error metric, and the target error threshold. Determination of the error metric may comprise determining a frequency with which a color occurs in the image, assigning a weight to the color based on the frequency, and calculating the error metric based on the weight. Determination of the error metric may comprise dividing the image into a plurality of sections, assigning a plurality of importance values to the plurality of sections, and calculating the error metric based on the plurality of importance values.

主权项

1. A method comprising:
by one or more computing devices, receiving an image that corresponds to a first color space; and by one or more computing devices, creating, based on an approximation function, a color profile for transforming the image from the first color space to a second color space, wherein:
the approximation function is determined by a polyline;the polyline comprises a number of line segments;each of the line segments has one or more control points;the number of line segments is determined by a binary search algorithm;the control points for the line segments are determined by a simulated annealing algorithm; andthe polyline as determined by the binary search algorithm and the simulated annealing algorithm is separated from an ideal function curve for transforming the image by an error value that is within a pre-determined threshold.