Image processing apparatus, control method therefor, and storage medium storing control program therefor

A control method for an image processing apparatus, the control method comprising:

• a setting step of setting, from among a plurality of halftone patterns, a halftone pattern to be used in a halftone process to be performed for an image with which a coding pattern is visually synthesized;
• a determination step of determining whether the coding pattern can be uniformly kept after the halftone process is performed using the halftone pattern set in the setting step;
• and
• a changing step of changing the halftone pattern used in the halftone process to another halftone pattern capable of uniformly keeping the coding pattern in a case where it is determined in the determination step that the coding pattern cannot be uniformly kept.

A non-transitory computer-readable storage medium storing a control program causing a computer to execute a control method for an image processing apparatus, the control method comprising:

• a setting step of setting, from among a plurality of halftone patterns, a halftone pattern to be used in a halftone process to be performed for an image with which a coding pattern is visually synthesized;
• a determination step of determining whether the coding pattern can be uniformly kept after the halftone process is performed using the halftone pattern set in the setting step;
• and
• a changing step of changing the halftone pattern used in the halftone process to another halftone pattern capable of uniformly keeping the coding pattern in a case where it is determined in the determination step that the coding pattern cannot be uniformly kept.