US 9,521,297 B2 · Reference color selection device, color correction device, and reference color selection method

Abstract

A reference color selection device includes a determination unit that compares a first and second magnitudes of a first second candidate colors with respect plural wavelengths and determines whether or not there is any wavelength that provides a reverse magnitude relationship between the first and second magnitudes reverse to a magnitude relationship at other wavelengths, the first and second candidate colors being included in a color group of reference colors used in color correction of a target color; and a selection unit that selects the color group as the reference colors when there is not a combination of the first and second candidate colors about which the determination unit determines that there is the wavelength that provides the reverse magnitude relationship in the color group to be the candidates of the reference colors.

Claims20

Dependent claims

A reference color selection device comprising:

a memory;
and
a hardware processor coupled to the memory and configured to
compare a first magnitude of a first candidate color and a second magnitude of a second candidate color with respect to plural wavelengths and determine whether there is a wavelength that provides a reverse magnitude relationship between the first magnitude and the second magnitude reverse to a magnitude relationship at other wavelengths, the first candidate color and the second candidate color being included in a color group to be candidates of plural reference colors that are used in color correction of a target color, the color correction being performed by an interpolation process by using the plural reference colors;
and
select the color group as the reference colors when there is not a combination of the first candidate color and the second candidate color about which it is determined there is the wavelength that provides the reverse magnitude relationship in the color group to be the candidates of the reference colors.

3 more elements

A color correction device comprising:

a memory;
and
a hardware processor coupled to the memory and configured to
compare a first magnitude of a first candidate color and a second magnitude of a second candidate color with respect to plural wavelengths and determine whether there is a wavelength that provides a reverse magnitude relationship between the first magnitude and the second magnitude reverse to a magnitude relationship at other wavelengths, the first candidate color and the second candidate color being included in a color group to be candidates of plural reference colors that are used in color correction of a target color, the color correction being performed by an interpolation process by using the plural reference colors;
and
select the color group as the reference colors when there is not a combination of the first candidate color and the second candidate color about which it is determined that there is the wavelength that provides the reverse magnitude relationship in the color group to be the candidates of the reference colors;
and
perform the color correction to the target color by the interpolation process by using the reference colors that are selected.

5 more elements

A reference color selection method that causes a computer to execute a process comprising:

comparing a first magnitude of a first candidate color and a second magnitude of a second candidate color with respect to plural wavelengths and determining whether or not there is any wavelength that provides a reverse magnitude relationship between the first and second magnitudes reverse to a magnitude relationship at other wavelengths, the first and second candidate colors being included in a color group to be candidates of plural reference colors that are used in color correction of a target color, the color correction being performed by an interpolation process by using the plural reference colors;
and
selecting the color group as the reference colors when there is not a combination of the first candidate color and the second candidate color about which the determininq determines that there is the wavelength that provides the reverse magnitude relationship in the color group to be the candidates of the reference colors.

Dependencies are inferred from the claim text.

Reference color selection device, color correction device, and reference color selection method

Life of this patent

Reference color selection device, color correction device, and reference color selection method

Life of this patent

Abstract

Claims20