Image processing apparatus, image processing method, and computer-readable recording medium storing image processing program
AssigneeRicoh Company, Ltd.
InventorTakanori Ito
Life of this patent
Estimating the term…
Abstract
An image processing apparatus is disclosed. In the image processing apparatus, a vector converting section converts image data output from a color scanner into vector coefficients, and a color mapping section converts the image data, which are converted into the vector coefficients, into L kinds of record image data corresponding to color materials which are used by a color printer, by referring to an M-dimensional LUT (lookup table). In the M-dimensional LUT, record image data optimal under plural observing light sources have been stored corresponding to the image data converted into the vector coefficients.
Claims20
An image processing apparatus, comprising:
- an input unit which inputs image data of a manuscript image by reading the manuscript image with use of N (N≧4) kinds of spectral sensitivity characteristics;
- a converting unit which converts the image data into record image data formed of L (L≧4) kinds of components;
- an output unit which outputs a record image based on the record image data;
- a light source determining unit which determines a plurality of light sources under which the manuscript image and the record image are observed;
- and
- a control unit which converts the image data into optimal record image data based on color differences between the manuscript image and the record image under the determined plural light sources under which the manuscript image and the record image are observed.
An image processing method, comprising:
- an input step which inputs image data of a manuscript image by reading the manuscript image with use of N (N≧4) kinds of spectral sensitivity characteristics;
- a converting step which converts the image data into record image data formed of L (L≧4) kinds of components;
- an output step which outputs a record image based on the record image data;
- a light source determining step which determines a plurality of light sources under which the manuscript image and the record image are observed;
- and
- a control step which converts the image data into optimal record image data based on color differences between the manuscript image and the record image under the determined plural light sources under which the manuscript image and the record image are observed.
A computer-readable recording medium storing an image processing program, wherein:
- the image processing program includes
- an input step which inputs image data of a manuscript image by reading the manuscript image with use of N (N≧4) kinds of spectral sensitivity characteristics;
- a converting step which converts the image data into record image data formed of L (L≧4) kinds of components;
- an output step which outputs a record image based on the record image data;
- a light source determining step which determines a plurality of light sources under which the manuscript image and the record image are observed;
- and
- a control step which converts the image data into an optimal record image data based on color differences between the manuscript image and the record image under the determined plural light sources under which the manuscript image and the record image are observed.
Dependencies are inferred from the claim text.