Image processing apparatus, image processing method, and storage medium to reduce ink application amount

An image processing method comprising:

• acquiring, with at least one processor, with respect to a pixel of interest, a combination of a plurality of pixel values representing respective ink application amounts of a plurality of color inks including at least one basic color ink and a fluorescent ink containing a dispersion element having a fluorescent property;
• determining with the at least one processor, whether a total value of the plurality of pixel values is larger than a threshold value;
• and
• in a case where it is determined that the total value is larger than the threshold value, reducing, with the at least one processor, a first pixel value for at least one ink of the at least one basic color ink so that an amount by which to reduce a second pixel value for the fluorescent ink becomes smaller than an amount by which to reduce the first pixel value corresponding to at least one ink of the at least one basic color ink and
• applying, with the at least one processor, the plurality of color inks to a recording medium so that an image is recorded on the recording medium.

A non-transitory computer-readable storage medium storing computer-executable instructions that, when executed by a computer, cause the computer to perform an image processing method comprising:

• acquiring, with at least one processor, with respect to a pixel of interest, a combination of a plurality of pixel values representing respective ink application amounts of a plurality of color inks including at least one basic color ink and a fluorescent ink containing a dispersion element having a fluorescent property;
• determining, with the at least one processor, whether a total value of the plurality of pixel values is larger than a threshold value;
• and
• in a case where it is determined that the total value is larger than the threshold value, reducing, with the processor, a first pixel value for at least one ink of the at least one basic color ink so that an amount by which to reduce a second pixel value for the fluorescent ink becomes smaller than an amount by which to reduce the first pixel value corresponding to at least one ink of the at least one basic color ink;
• and
• applying, with the at least one processor, the plurality of color inks to a recording medium so that an image is recorded on the recording medium.

An image processing apparatus comprising at least one processor configured to:

• acquire, with respect to a pixel of interest, a combination of a plurality of pixel values including a first pixel value indicating an application amount of a first ink and a second pixel value indicating an application amount of a second ink higher in angle dependence than the first ink;
• determine whether a total value of the plurality of pixel values is larger than a threshold value;
• in a case where it is determined that the total value is larger than the threshold value, perform reduction so that an amount by which to reduce the second pixel value for the second ink becomes smaller than an amount by which to reduce the first pixel value for the first ink;
• and
• apply the plurality of color inks to a recording medium so that an image is recorded on the recording medium.