Image correction method and image correction system
AssigneeCanon Kabushiki Kaisha
InventorTakeshi Murase
Life of this patent
Estimating the term…
Abstract
A patch is printed on a printing medium, and ink discharge amount information is acquired from a colorimetric value that is acquired by measuring a printed patch. According to the information, color correction is performed on image data to be processed for printing, using a correction table that corresponds to a designated type of printing media.
Claims22
An image processing method for printing by a print head which discharges an ink droplet, the method comprising the steps of:
- acquiring amount information on an amount of ink droplet discharged by the print head, based on a measurement value by measuring a test pattern printed by the print head and information corresponding to a print medium on which the test pattern is printed among a plurality of kinds of information corresponding to a plurality of kinds of print media, wherein each of the plurality of kinds of information associates the amount information with a predetermined measurement value;
- and
- determining a correction table corresponding to a print medium on which an image is to be printed, based on the acquired amount information.
An image processing apparatus for printing by a print head which discharges an ink droplet, the apparatus comprising:
- a storage unit configured to store a plurality of kinds of information, wherein the plurality of kinds of information correspond to a plurality of types of printing media, and wherein each of the plurality of kinds of information associates amount information on an amount of ink droplet discharged by the print head with a predetermined measurement value by measuring a test pattern printed by the print head;
- a acquisition unit configured to acquire amount information on an amount of ink droplet discharged by the print head, based on a measurement value by measuring a test pattern printed by the print head and information corresponding to a print medium on which the test pattern is printed among a plurality of kinds of information corresponding to a plurality of kinds of print media, wherein each of the plurality of kinds of information associates the amount information with the predetermined measurement value;
- and
- a determination unit configured to determine a correction table corresponding to a print medium on which an image is to be printed, based on the acquired amount information.
A computer-readable storage medium storing a program which causes a computer to execute an image processing method for printing by a print head which discharges an ink droplet, the method comprising the steps of:
- acquiring amount information on an amount of ink droplet discharged by the print head, based on a measurement value by measuring a test pattern printed by the print head and information corresponding to a print medium on which the test pattern is printed among a plurality of kinds of information corresponding to a plurality of kinds of print media, wherein each of the plurality of kinds of information associates the amount information with a predetermined measurement value;
- and
- determining a correction table corresponding to a print medium on which an image is to be printed, based on the acquired amount information.
Dependencies are inferred from the claim text.