3-DIMENSIONAL LOOK-UP TABLE-BASED COLOR MASKING TECHNIQUE

摘要

A method for correcting colors in an image commences by first defining a set of Red-Green-Blue (RGB) color triplets corresponding to user-selected colors defining a designated are of interest in the image to undergo color correction. The set of RGB color triplets are mapped into in a color space defined by cylindrical coordinates to create a three-dimensional look-up table (3D-LUT) that represents a first color range for the designated area of interest. The 3D-LUT undergoes adjustment to establish a second color range. Thereafter, the image is rendered using the 3D-LUT to replace colors in the designated area of interest with colors in the second color range.

主权项

1. A method for correcting colors in an image, comprising the steps of:
defining a set of Red-Green-Blue (RGB) color triplets corresponding to user-selected colors defining a designated area of interest in the image to undergo color correction; mapping the set of RGB color triplets in a color space defined by cylindrical coordinates to create a three-dimensional look-up table (3D-LUT) that represents a first color range for the designated area of interest; adjusting the 3D-LUT to establish a second color range; and rendering the image using the adjusted 3D-LUT to replace colors in the designated area of interest with colors in the second color range.