Image processing device configured to perform color correction with compressed color correction data and image processing method performing the same

摘要

An image processing device includes a first storage unit, a calculating unit, a second storage unit, and an interpolation calculating unit. The first storage unit is configured to store values at lattice points on a plurality of unit cubes to which a color space made up of the plurality of color components is segmentalized. The calculating unit is configured to calculate a difference between a first lattice-point value stored in the first storage unit and a color component value mapped to color coordinates of the first lattice point for each of the lattice points. The second storage unit is configured to store the calculated difference on a lattice-point-by-lattice-point basis. The interpolation calculating unit is configured to calculate a second image data by reading out the stored differences designated by a first image data and performing interpolation calculation using the read-out second lattice-point values.

主权项

1. An image processing device for performing color correction on first image data represented by a plurality of color components to obtain second image data represented by the same color components as the color components of the first image data, the image processing device comprising:
a processor configured to calculate a second lattice-point value that is a difference between a first lattice-point value and a color component value, the first lattice-point values being values at lattice points on unit cubes that segment a color space made up of the plurality of color components, and the color component values being a value of a lattice point on an axis of a respective color component closest to the first lattice-point value such that, for each color component, the processor selects a closest lattice point from among two lattice points on the axis of the respective color component as the color component value; a memory configured to,
the first lattice-point values, andstore the calculated second lattice-point values on a lattice-point-by-lattice-point basis such that, for each unit cube, the second lattice-point values for each of the color components are stored at a same memory address representing a row of a lookup table, whereinthe processor is configured to calculate the second image data by reading out, from a single one of the rows of the lookup table, the second lattice-point values designated by the first image data and performing interpolation calculation using the read-out second lattice-point values.