IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD

摘要

An image processing apparatus includes a signal input converter, a color gamut converter, a blend coefficient setter, and a color synthesizer. The signal input converter converts input signals having a first color gamut representing image data to first image signals that are at least substantially linear. The color gamut converter converts the first image signals to second image signals having a second color gamut narrower than the first color gamut. The blend coefficient setter sets a blend coefficient corresponding to a synthesis ratio of the first and second image signals based on saturation obtained from the input signals. The color synthesizer generates synthesized image signals obtained by synthesizing the first and second image signals at a ratio according to the set blend coefficient.

主权项

1. An image processing apparatus, comprising:
a signal input converter to convert input signals having a first color gamut representing image data to first image signals that are at least substantially linear; a color gamut converter to convert the first image signals to second image signals having a second color gamut narrower than the first color gamut, the image signals having the second color gamut to be displayed; a blend coefficient setter to set a blend coefficient corresponding to a synthesis ratio of the first image signals and the second image signals based on saturation obtained from the input signals; and a color synthesizer to generate synthesized image signals obtained by synthesizing the first image signals and the second image signals at a ratio according to the set blend coefficient, wherein: the blend coefficient setter is to set an upper bound of saturation based on a color difference between a boundary of the first color gamut and a boundary of the second color gamut and based on a chroma component of the boundary of the first color gamut, and the blend coefficient setter is to set the upper bound of saturation when the boundary of the first color gamut and the boundary of the second color gamut are converted into an L*a*b space, the upper bound of saturation corresponding to when synthesized image signals generated by the color synthesizer based on the blend coefficient become the second image signals.