Apparatus, method and medium outputting wide gamut space image

An apparatus outputting a wide gamut image, the apparatus comprising:

• a feature extraction module to extract one or more feature differences between a standard gamut and a wide gamut of an image;
• a color range setting module to set a hue range according to the extracted feature differences and one or more experimentally determined parameters;
• and
• a conversion module to convert the image, from the wide gamut to the standard gamut, according to the extracted feature differences, the experimentally determined parameters, and the hue range, wherein the experimentally determined parameters comprise at least one of:
• hue angle variations that are needed to map, to the wide gamut, hue of a primary color that results in a larger hue discrepancy between the standard gamut and the wide gamut than a first predefined threshold;
• and
• chroma variations that are needed to map, to the wide gamut, chroma of a primary color that results in a larger chroma discrepancy between the standard gamut and the wide gamut than a second predefined threshold.

A method of outputting a wide gamut image implemented by an apparatus outputting a wide gamut image, the method comprising:

• extracting, by way of the apparatus, one or more feature differences between a standard gamut and a wide gamut of an image, the extracted feature differences being feature differences which result in a discrepancy larger than a predetermined threshold;
• setting a hue range according to the extracted feature differences and one or more experimentally determined parameters;
• and
• converting the image, from the wide gamut to the standard gamut, according to the extracted feature differences, the experimentally determined parameters, and the hue range,
• wherein the experimentally determined parameters are determined by an experiment
• conducted by inputting a wide gamut image, generated by a wide gamut imaging device, to a monitor and the wide gamut image output by the monitor is viewed by a plurality of viewers,
• wherein predetermined parameters are applied to the wide gamut image and the results of the application are printed, the predetermined parameters being based on the feature differences which result in the discrepancy larger than the predetermined threshold,
• wherein the plurality of viewers choose one or more printed images that are similar to the wide gamut image output by the monitor, from among the printed images, and one or more parameters corresponding to the chosen one or more images is determined to be the experimentally determined parameters based on the one or more images chosen by the plurality of viewers.

A method of outputting a wide gamut image implemented by an apparatus outputting a wide gamut image, the method comprising:

• setting a hue range, by way of the apparatus, based on one or more extracted feature differences between a standard gamut and a wide gamut of an image and one or more experimentally determined parameters, the extracted feature differences being feature differences which result in a discrepancy larger than a predetermined threshold;
• and
• converting the image, from the wide gamut to the standard gamut, based on the extracted feature differences, the experimentally determined parameters and the set hue range,
• wherein the experimentally determined parameters are determined by an experiment
• conducted by inputting a side gamut image, generated by a wide gamut imaging device, to a monitor and the wide gamut image output by the monitor is viewed by a plurality of viewers,
• wherein predetermined parameters are applied to the wide gamut image and the results of the application are printed, the predetermined parameters being based on the feature differences which result in the discrepancy larger than the predetermined threshold,
• wherein the plurality of viewers choose one or more images that are similar to the wide gamut image output by the monitor from among the printed images and one or more parameters corresponding to the chosen one or more images is determined to be the experimentally determined parameters based on the one or more images chosen by the plurality of viewers.