Patent ID: 6229916
Filing Date: 2001-05-08
Classification: H04N

Abstract:
A method of forming a color transformation look-up table, comprising:i) calculating a first correspondence relationship for a first transformation of color signals, which are capable of being reproduced on a non-self-luminous displaying medium, from first colorimetric system signals into second colorimetric system signals,ii) calculating a second correspondence relationship for a second transformation of color signals, which are capable of being reproduced on a self-luminous displaying medium, from the second colorimetric system signals into the first colorimetric system signals,iii) carrying out dynamic range compensation for transforming the dynamic range of the color signals, which are capable of being reproduced on the non-self-luminous displaying medium, into the dynamic range of the color signals, which are capable of being reproduced on the self-luminous displaying medium, in accordance with said first correspondence relationship and said second correspondence relationship, the transforming being carried out for the respective color signals, which are capable of being reproduced on the non-self-luminous displaying medium,iv) carrying out color transformation for transforming the color signals, which are capable of being reproduced on the non-self-luminous displaying medium, into the color signals, which are capable of being reproduced on the self-luminous displaying medium, in accordance with a chromatic adaptation model such that the appearances of perceived colors may become identical between the image displayed on the non-self-luminous displaying medium, andv) storing the color signals, which are capable of being reproduced on the non-self-luminous displaying medium, and the corresponding color signals capable of being reproduced on the self-luminous displaying medium, which have been obtained from said dynamic range compensation and said color transformation.