Patent ID: 8493614
Filing Date: 2013-07-23
Classification: H04N

Abstract:
1. A method for matching a source profile to a destination profile, comprising: providing a destination test chart and a corresponding first source test chart, each test chart comprising a plurality of corresponding color patches; applying a first transformation to the source profile in response to receiving an input for visually matching an adjustable white color patch of a display of the source test chart to a white color patch of the destination test chart, said first transformation adjusting the source profile to substantially match the destination profile without a color measuring instrument; progressively generating, based on the first transformation that adjusts the source profile, a second source test chart comprising one or more modified color patches compared to color patches of the first source test chart; applying a second transformation to the source profile in response to visually matching an adjustable black color patch of the display of the source test chart to a black color patch of the destination test chart, said second transformation further adjusting the source profile to substantially match the destination profile; progressively generating, based on the second transformation that further adjusts the source profile, a third source test chart comprising a plurality of modified color patches, wherein all color patches except for white color patches are modified compared to the color patches of the second source test chart; visually selecting, from a displayed sequence of gray patches of the third source test chart, a gray patch with a greatest visual mismatch in comparison to a corresponding sequence of gray patches of the destination test chart; selecting a reference gray level that is between the selected displayed gray patch and the corresponding selected gray patch of the destination test chart having the greatest visual mismatch; and progressively generating a fourth source test chart having all color patches, except for white and black, modified compared to the third source test chart based on applying a third transformation to the source profile for values greater than the reference gray level and a fourth transformation for values less than the reference gray level.