TY - RPRT A1 - Richter, Klaus T1 - Standard and Wide Gamut colour code (SGcode and WGcode) compatible with CIELAB, ISO/IEC 15775 and DIS ISO/IEC 19839-1 to 4 for colorimetric colour management and communication N2 - For colorimetric colour management and communication 8bit colour codes in perceptive space (*colour space) are described. Two Standard Gamut Colour codes for Printing (PR) and Television (TV) and one universal Wide Gamut Colour code (WGcode) which includes all real colours of both PR and TV. There are reverse transformations between the two different SGcodes of PR and TV, the universal WGcode and the CIELAB colour coordinates. The SGcodes and the WGcode are compatible with CIELAB, ISO/IEC 15775 and DIS ISO/IEC 19839-1 to 4 which specify image reproduction properties of colour copiers, printers, scanners and monitors. These standards correspond to DIN 33866-1 to 5. The SGcodes and the WGcode can be calculated for all colours of the four ISO/IEC-test charts which are all defined in CIELAB coordinates. Main colour series are equally spaced in CIELAB colour space both in lightness L* and chroma C*. Up to now there are productions of DIN (German Standard Institute) and JBMA (Japan Business Machine Makers Association) according to ISO/IEC 15775 which can be used for all applications. The 8bit SGcode of television is similar compared to the nonlinear 8bit code of the sRGB colour space defined in IEC 61966-2-1:1999-10 which is incompatible to CIELAB and ISO/IEC 15775. KW - Image reproduction KW - ISO/IEC-test charts KW - Colour code KW - Colour space KW - Colour management KW - Colour communication KW - Standard gamut KW - Wide gamut PY - 2001 UR - http://www.ps.bam.de/CISO08.PDF SP - 1 EP - 10 PB - Bundesanstalt für Materialforschung und -prüfung CY - Berlin AN - OPUS4-1373 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - RPRT A1 - Richter, Klaus T1 - Applications of digital and analog ISO/IEC-test charts for specifying image reproduction of copiers, printers, scanners and monitors according to ISO/IEC 15775 and ISO/IEC DIS 19839-1 to 4 N2 - Four ISO/IEC-test charts in different modes (halftone and continuous tone, in reflectance and transmittance mode) have been defined in ISO/IEC 15775 and ISO/IEC DIS 19839-1 to 4 to specify image reproduction properties of colour copiers, printers, scanners and monitors. Corresponding test charts have been defined in DIN 33866-1 to 5. All colours of all test charts are defined in CIELAB coordinates. Main colour series are equally spaced in CIELAB colour space both in lightness L* and chroma C*. Up to now there are productions of DIN and JBMA (Japan Business Machine Makers Association) according to ISO/IEC 15775 which can be used for all applications. KW - Image reproduction KW - ISO/IEC-test charts KW - Copiers KW - Printers KW - Scanners KW - Monitors PY - 2000 UR - http://www.ps.bam.de/CGIP15.PDF SP - 1 EP - 6 PB - Bundesanstalt für Materialforschung und -prüfung CY - Berlin AN - OPUS4-1363 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - RPRT A1 - Richter, Klaus T1 - Comparison of properties of the International Standard series ISO/IEC 15775 or DIS ISO/IEC 19839-1 to -4 and IEC 61966-X in the field of Image Technology N2 - The International Standard series ISO/IEC 15775 and ISO/IEC DIS 19839-1 to 4 of the committee ISO/IEC JTC1/SC28 and IEC 61966-X (e. g. X=2,7) of the committee IEC TC100 TA2 are compared. KW - Image reproduction KW - ISO/IEC-test charts KW - Copiers KW - Printers KW - Scanners KW - Monitors PY - 2000 UR - http://www.ps.bam.de/CIE2A1.PDF SP - 1 EP - 4 PB - Bundesanstalt für Materialforschung und -prüfung CY - Berlin AN - OPUS4-1368 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - RPRT A1 - Richter, Klaus T1 - Definition of extended print colour space cmyolvnw* according to ISO/IEC 15775 or DIS ISO/IEC 19839-1 to 4 and comparison with sRGB and scRGB colour spaces according to IEC 61966-X N2 - The International Standard series ISO/IEC 15775 and DIS ISO/IEC 19839-1 to 4 for specifying image reproduction properties of colour reproduction processes analog-analog (copiers), analog-digital (scanners) and digital-analog (printers, monitors) seem to overlap with the International Standard series IEC 61966-X for scanners, printers and displays. But there are fundamental differences. In the ISO/IEC standards the coding of colours is based on reflective colours (defined for standard offset printing) and in the IEC series on luminous colours (defined for television). Members of the standard groups ISO/IEC JTC1/ SC28 and IEC TC100 TA2 which developed the above standards try at the moment to define extended colour spaces (wide gamut colour spaces) compatible with the present spaces of the standards ISO/IEC 15775:1999-12 and IEC 61966-2-1:1999- 10.The extended spaces should match the requirements of both the users and the industry for the different applications. Important advantages and disadvantages of both solutions based on coding of reflective and luminous colours are presented. KW - Image reproduction KW - ISO/IEC-test charts KW - Copiers KW - Printers KW - Scanners KW - Monitors KW - Coding KW - Extended colour space KW - Wide gamut colour space PY - 2000 UR - http://www.ps.bam.de/CIE2B1.PDF SP - 1 EP - 8 PB - Bundesanstalt für Materialforschung und -prüfung CY - Berlin AN - OPUS4-1369 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -