Signal conversion method and apparatus, program, and print system

摘要

Provided are a signal conversion method and apparatus, a recording medium storing non-transitory program, and a print system which can prevent a color reproduction gamut from being excessively narrowed while avoiding a print failure caused by excess color material. A signal conversion method for limiting the total amount of color materials used in a printing device that forms an image on a recording medium using a plurality of color materials includes determining a final output vector after the total amount of color materials used is limited for an input vector, on the basis of a plurality of input/output signal conversion processes based on different limit values of the total amount of color materials used and weight definition information in which weights applied to the conversion results of the plurality of input/output signal conversion processes are determined according to the input vector.

主权项

1. A signal conversion method for converting an image signal in order to limit a total amount of color materials used in a printing device that forms an image on a recording medium using a plurality of color materials, comprising:
preparing a plurality of input/output signal conversion processes based on different limit values such that a plurality of results of conversion from an input vector to a vector in which the total amount of color materials used is limited to a value equal to or less than the limit value are generated; and determining a final output vector after the total amount of color materials used is limited for the input vector, on the basis of the plurality of input/output signal conversion processes and weight definition information in which weights applied to the conversion results of the plurality of input/output signal conversion processes are determined according to the input vector; and further comprising:
a step of applying the plurality of input/output signal conversion processes to the input vector to generate a plurality of output vectors for each limit value in which the total amount of color materials used is limited to a value that is equal to or less than each limit value;a step of calculating a weighted sum of the plurality of output vectors for each limit value, using the weights determined from the weight definition information, and determining the output vectors; anda step of outputting a converted image signal based on the final output vector, the converted image signal being usable, by a printing device, to form an image on a recording medium.