Multi-color halftone equipment split modeling method and system oriented to copy object

Abstract

The invention provides a multi-color halftone equipment split modeling method and system oriented to a copy object. The method includes the steps that multi-color halftone equipment is split into multiple four-color models containing black ink in an enumeration mode; a Nigboer primary color step wedge prepared in the ink quantity limited modeling process is used for acquiring color gamut of the four-color models through a convex hull algorithm; a color gamut judgment method is used for acquiring color gamut coverage rates of different four-color model combinations on a to-be-copied image, based on the principle of maximization of the color gamut coverage rates, the four-color model combinations are determined; aiming at the probable condition that multiple sets of combinations meet condition requirements at the same time, a center aberration minimization method is used for determining a final optimal four-color model combination, and equipment split modeling is completed. Aberration samples are prepared in the ink quantity limitation process, under the condition without an additional sample preparation step, the overall modeling process of the multi-color halftone equipment is simplified, and implementation is convenient.

Description

technical field [0001] The invention belongs to the technical field of color reproduction of halftone equipment, and in particular relates to a split modeling method and system for multicolor halftone equipment oriented to reproduction objects. Background technique [0002] Multicolor halftone color reproduction technology is the mainstream technology in the field of image reproduction at present. This technology aims to establish a correlation model between the input control value of the original image data and the output color value of the device (that is, the color characterization model), so as to achieve accurate control of the reproduced color. Compared with traditional four-color (CMYK) reproduction technology, multi-color reproduction technology has the advantages of wide color gamut, rich layers, and clear details. [0003] In the process of building the above-mentioned characteristic model, due to the high ink color dimension of multi-color equipment, if it is bui...

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Problems solved by technology

However, limited by subjective and objective factors such as the level of theoretical methods, the academic and industrial circles have not yet proposed effective solutions to the above problems.

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