Information processing apparatus, information processing method, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorYoshinori Kawai
Life of this patent
Estimating the term…
Abstract
In a predetermined look-up table, in which each of a plurality of grid points that are defined by dividing each axis of RGB color coordinates is associated with a combination of density values respectively corresponding to a plurality of inks to be used by a printing apparatus, the plurality of grid points include a plurality of first grid points, at which a density value of a predetermined ink among the plurality of inks does not correspond to 0, and a second grid point, at which the density value of the predetermined ink corresponds to 0, and the plurality of first grid points do not exist at points adjacent to each other in the plurality of grid points.
Claims14
An information processing apparatus comprising:
- a memory containing instructions;
- and
- one or more processors for executing the instructions to convert image data into density data by use of a predetermined look-up table, in which, in RGB color coordinates, each of a plurality of grid points that are defined by dividing each axis of RGB is associated with a combination of density values respectively corresponding to a plurality of inks to be used by a printing apparatus, the image data being represented by luminance values of RGB, the density data being represented by density values respectively corresponding to the plurality of inks,
- wherein, in the predetermined look-up table, the plurality of grid points include a plurality of first grid points, at which a density value of a predetermined ink among the plurality of inks does not correspond to 0, and a second grid point, at which the density value of the predetermined ink corresponds to 0, and
- wherein the plurality of first grid points do not exist at points adjacent to each other in the plurality of grid points.
An information processing method comprising:
- converting image data into density data by use of a predetermined look-up table, in which, in RGB color coordinates, each of a plurality of grid points that are defined by dividing each axis of RGB is associated with a combination of density values respectively corresponding to a plurality of inks to be used by a printing apparatus, the image data being represented by luminance values of RGB, the density data being represented by density values respectively corresponding to the plurality of inks,
- wherein, in the predetermined look-up table, the plurality of grid points include a plurality of first grid points, at which a density value of a predetermined ink among the plurality of inks dose not correspond to 0, and a second grid point, at which the density value of the predetermined ink corresponds to 0, and
- wherein the plurality of first grid points do not exist at points adjacent to each other in the plurality of grid points.
A non-transitory computer readable storage medium storing a program for causing a computer to function as an information processing apparatus, the information processing apparatus comprising:
- a memory containing instructions;
- and
- one or more processors for executing the instructions to convert image data into density data by use of a predetermined look-up table, in which, in RGB color coordinates, each of a plurality of grid points that are defined by dividing each axis of RGB is associated with a combination of density values respectively corresponding to a plurality of inks to be used by a printing apparatus, the image data being represented by luminance values of RGB, the density data being represented by density values respectively corresponding to the plurality of inks,
- wherein, in the predetermined look-up table, the plurality of grid points include a plurality of first grid points, at which a density value of a predetermined ink among the plurality of inks dose not correspond to 0, and a second grid point, at which the density value of the predetermined ink corresponds to 0, and
- wherein the plurality of first grid points do not exist at points adjacent to each other in the plurality of grid points.
Dependencies are inferred from the claim text.