Color Look-Up Tables

About

Color Look-Up Tables with Lossless Compression Brief Description: This image processing technology provides data compression for the color transformation tables which are embedded in printer firmware for optimal color printing. Applications: The concept is to be used in digital printing devices, such as color ink jet and color laser printers. Color look-up tables provide transformation between various color spaces, such as device independent color spaces (CIELAB) and device-dependent color spaces (CMYK), which can depend on print media and artistic preferences. These color look-up tables are embedded in printer hardware, typically on expensive flash memory. Advantages: The technique provides color look-up tables in a compressed form, with no compromise in quality. The compression ratio achieved is 3.45. Technology Status: There has been one publication: S. R. A. Balaji, G. Sharma, M. Q. Shaw, and R. Guay, “Hierarchical compression of color look up tables ,” in Proc. IS&T/SID Fifteenth Color Imaging Conference: Color Science and Engineering: Systems, Technologies, Applications, Albuquerque, NM, 5-9 Nov. 2007, pp. 261-266. Patent Information: Title Country Patent No. Issued Date Pre-Processing Methods for Improved Lossless Compression of Color Look-Up Tables United States 8,294,953 10/23/2012