Title:
IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD AND PROGRAM
Document Type and Number:
Japanese Patent JP2023065885
Kind Code:
A
Abstract:
To perform a color conversion process efficiently using hardware resources.SOLUTION: Axis setting for deriving a point where a conversion target point ti and one of color components match is performed using a reference table. The output values of points Q1, Q2, Q3, Q4 between grid points where the conversion target point ti and the value in R axis direction are the same, are acquired from the reference table. Linear interpolation in a G axis direction is carried out using the acquired output values of Q1-Q4, and the output values of interpolation points R1, R2 between the points Q1-Q4 where the conversion target point ti and the value in G axis direction are the same are calculated. Linear interpolation in a B axis direction is carried out using the acquired output values of interpolation points R1, R2, and the output value of an interpolation point S between the interpolation points R1, R2 where the conversion target point ti and the value in B axis direction are the same, i.e., the conversion target point ti, is calculated.SELECTED DRAWING: Figure 6
Inventors:
NISHIKAWA NAOYUKI
Application Number:
JP2021176278A
Publication Date:
May 15, 2023
Filing Date:
October 28, 2021
Export Citation:
Assignee:
CANON KK
International Classes:
H04N1/60; B41J2/525; B41J5/30; G06T1/00; H04N1/407
Attorney, Agent or Firm:
Patent Attorney Tani / Abe Patent Office