COLOR CONVERSION FOR PROCESSING DIGITAL IMAGE

• Main Authors: WELDY JOHN A, DUPIN MICHAEL W, AXMAN MICHAEL S, PTUCHA RAYMOND W, BUHR JOHN D, GINDELE EDWARD B, RHODA DAVID K
• Format: Patent
• Language: English
• Published: 26.02.2004
• Edition: 7
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

PROBLEM TO BE SOLVED: To provide a method for converting color appearance for a plurality of digital images. SOLUTION: This conversion method is composed of steps at which a plurality of digital images are received from a capturing medium. More precisely, the method has a step for including a plurality of pixel values related to at least three basic colors in each digital image; a step for calculating color compensation conversion using non-linear adjustment which compensates underexposure conditions as a capturing medium function without depending on a digital image, and a linear function relation which depends on basic color pixels and defines exposure level dependency gray evaluation corresponding to photograph reaction of the capturing medium; and a step for converting pixels in a digital image by changing the degree of color compensation as an exposure function using the color compensation conversion to compensate pixels of the plurality of digital images. COPYRIGHT: (C)2004,JPO