Image processing apparatus, image processing method, and storage medium storing program

An image processing apparatus comprising:

• an acquisition unit configured to acquire a pixel value from original data of a print target of a print unit, which is formed by a plurality of pages;
• a decision unit configured to decide, based on the pixel value acquired by the acquisition unit and a print color gamut of the print unit, a color mapping method to the print color gamut for at least one of a page included in the plurality of pages and a portion in the page;
• and
• a color conversion unit configured to perform color conversion of the original data by the color mapping method decided by the decision unit,
• wherein a plurality of color mapping methods as a target to be decided by the decision unit include a first color mapping method of compressing a color space in the print color gamut, and a second color mapping method different from the first color mapping method,
• the decision unit decides the color mapping method to the print color gamut based on whether a pixel value outside the print color gamut is included in a plurality of pixel values acquired by the acquisition unit, and
• the decision unit decides the first color mapping method if the pixel value outside the print color gamut is included in the plurality of pixel values acquired by the acquisition unit, and decides the second color mapping method if the pixel value outside the print color gamut is not included in the plurality of pixel values acquired by the acquisition unit.

An image processing method comprising:

• acquiring original data of a print target of a print unit, which is formed by one page or a plurality of pages;
• dividing the original data into a plurality of partial original data including at least a first partial original and a second partial original;
• deciding a first color mapping method to a print color gamut for the first partial original based on a pixel value included in the first partial original and the print color gamut of the print unit;
• deciding a second color mapping method to the print color gamut for the second partial original based on a pixel value included in the second partial original and the print color gamut of the print unit;
• performing color conversion of the first partial original by the first color mapping method;
• performing color conversion of the second partial original by the second color mapping method decided by the decision unit;
• and
• setting a color gamut of a partial original corresponding to the partial original data,
• wherein each of the first color mapping method and the second color mapping method is a color mapping method from the color gamut of the partial original data to the print color gamut, and
• in the setting of a color gamut, the print color gamut is set as a default color gamut, and if a pixel value of the partial original data is outside the print color gamut, the default color gamut is expanded such that the default color gamut includes the pixel value outside the print color gamut, and the expanded color gamut is set as the color gamut of the partial original corresponding to the partial original data.

A non-transitory computer-readable storage medium storing a program configured to cause a computer to function to:

• acquire original data of a print target of a print unit, which is formed by one page or a plurality of pages;
• divide the original data into a plurality of partial original data including at least a first partial original and a second partial original;
• decide a first color mapping method to a print color gamut for the first partial original based on a pixel value included in the first partial original and the print color gamut of the print unit;
• decide a second color mapping method to the print color gamut for the second partial original based on a pixel value included in the second partial original and the print color gamut of the print unit;
• perform color conversion of the first partial original by the first color mapping method;
• perform color conversion of the second partial original by the second color mapping method decided by the decision unit;
• and
• set a color gamut of a partial original corresponding to the partial original data,
• wherein each of the first color mapping method and the second color mapping method is a color mapping method from the color gamut of the partial original data to the print color gamut, and
• in the setting of a color gamut, the print color gamut is set as a default color gamut, and if a pixel value of the partial original data is outside the print color gamut, the default color gamut is expanded such that the default color gamut includes the pixel value outside the print color gamut, and the expanded color gamut is set as the color gamut of the partial original corresponding to the partial original data.

An image processing apparatus comprising:

• an acquisition unit configured to acquire a pixel value from original data of a print target of a print unit, which is formed by a plurality of pages;
• a decision unit configured to decide, based on the pixel value acquired by the acquisition unit and a print color gamut of the print unit, a color mapping method to the print color gamut for at least one of a page included in the plurality of pages and a portion in the page;
• a color conversion unit configured to perform color conversion of the original data by the color mapping method decided by the decision unit;
• and
• a determination unit configured to determine whether a first pixel value and a second pixel value acquired by the acquisition unit are pixel values outside the print color gamut, and to determine whether the first pixel value and the second pixel value satisfy a condition,
• wherein a plurality of color mapping methods as a target to be decided by the decision unit include a first color mapping method of compressing a color space in the print color gamut, and a second color mapping method different from the first color mapping method,
• the decision unit decides the color mapping method to the print color gamut based on whether a pixel value outside the print color gamut is included in a plurality of pixel values acquired by the acquisition unit, and
• if it is determined by the determination unit that the condition is satisfied, the decision unit decides the first color mapping method.

An image processing apparatus comprising:

• an acquisition unit configured to acquire a pixel value from original data of a print target of a print unit, which is formed by a plurality of pages;
• a decision unit configured to decide, based on the pixel value acquired by the acquisition unit and a print color gamut of the print unit, a color mapping method to the print color gamut for at least one of a page included in the plurality of pages and a portion in the page;
• a color conversion unit configured to perform color conversion of the original data by the color mapping method decided by the decision unit;
• and
• a setting unit configured to set a color gamut corresponding to the original data,
• wherein a plurality of color mapping methods as a target to be decided by the decision unit include a first color mapping method of compressing a color space in the print color gamut, and a second color mapping method different from the first color mapping method,
• the decision unit decides the color mapping method to the print color gamut based on whether a pixel value outside the print color gamut is included in a plurality of pixel values acquired by the acquisition unit,
• each of the first color mapping method and the second color mapping method is a color mapping method from the color gamut set by the setting unit to the print color gamut, and
• the setting unit sets the print color gamut as a default color gamut, and if a pixel value acquired by the acquisition unit is outside the print color gamut, the setting unit expands the default color gamut such that the default color gamut includes the pixel value outside the print color gamut, and sets the expanded color gamut as the color gamut corresponding to the original data.

An image processing method comprising:

• acquiring a pixel value from original data of a print target of a print unit, which is formed by a plurality of pages;
• deciding, based on the acquired pixel value and a print color gamut of the print unit, a color mapping method to the print color gamut for at least one of a page included in the plurality of pages and a portion in the page;
• and
• performing color conversion of the original data by the decided color mapping method,
• wherein in the deciding of a color mapping method, a plurality of color mapping methods as a target to be decided include a first color mapping method of compressing a color space in the print color gamut, and a second color mapping method different from the first color mapping method,
• in the deciding of a color mapping method, the color mapping method to the print color gamut is decided based on whether a pixel value outside the print color gamut is included in a plurality of acquired pixel values, and
• in the deciding of a color mapping method, the first color mapping method is decided if the pixel value outside the print color gamut is included in the plurality of acquired pixel values, and the second color mapping method is decided if the pixel value outside the print color gamut is not included in the plurality of acquired pixel values.

An image processing method comprising:

• acquiring a pixel value from original data of a print target of a print unit, which is formed by a plurality of pages;
• deciding, based on the acquired pixel value and a print color gamut of the print unit, a color mapping method to the print color gamut for at least one of a page included in the plurality of pages and a portion in the page;
• performing color conversion of the original data by the decided color mapping method;
• determining whether an acquired first pixel value and an acquired second pixel value are pixel values outside the print color gamut;
• and
• determining whether the first pixel value and the second pixel value satisfy a condition,
• wherein in the deciding of a color mapping method, a plurality of color mapping methods as a target include a first color mapping method of compressing a color space in the print color gamut, and a second color mapping method different from the first color mapping method,
• wherein in the deciding of a color mapping method, the color mapping method to the print color gamut is decided based on whether a pixel value outside the print color gamut is included in a plurality of acquired pixel values, and
• wherein in the deciding of a color mapping method, if it is determined in the determining that the condition is satisfied, the first color mapping method is decided.