Verification apparatus, control method thereof, printing system, and storage medium

A verification apparatus configured to perform verification on an image printed on a sheet, the verification apparatus comprising:

• a reading unit including a plurality of imaging units configured to respectively perform reading in read regions different from each other in a predetermined direction orthogonal to a conveyance direction of a sheet, the reading unit being configured to use the plurality of imaging units to read the image on the sheet conveyed, the read regions respectively corresponding to adjacent imaging units partially overlapping with each other;
• an identification unit configured to identify a size of one of a read image obtained by reading the image on the sheet by each of the plurality of imaging units, and a corresponding reference image, having a smaller size in the predetermined direction;
• and
• a verification unit configured to compare the read image corresponding to each of the plurality of imaging units and the corresponding reference image, about a region of the size identified by the identification unit in the predetermined direction, to verify the read image.

A method of controlling a verification apparatus configured to perform verification on an image printed on a sheet, the method comprising:

• using a plurality of imaging units to read an image on a sheet conveyed, the plurality of imaging units being configured to respectively perform reading in read regions different from each other in a predetermined direction orthogonal to a conveyance direction of the sheet, the read regions respectively corresponding to adjacent imaging units partially overlapping with each other;
• performing processing of changing a size, in the predetermined direction, of a larger one of a read image obtained by reading the image on the sheet by each of the plurality of imaging units, and a corresponding reference image, in accordance with a size of a smaller one;
• and
• performing verification by comparing the read image corresponding to each of the plurality of imaging units with the corresponding reference image, after the processing been completed.

A non-transitory computer-readable storage medium storing a computer program for causing a computer to execute a method of controlling a verification apparatus configured to perform verification on an image printed on a sheet, the method comprising:

• using a plurality of imaging units to read an image on a sheet conveyed, the plurality of imaging units being configured to respectively perform reading in read regions different from each other in a predetermined direction orthogonal to a conveyance direction of the sheet, the read regions respectively corresponding to adjacent imaging units partially overlapping with each other;
• performing processing of changing a size, in the predetermined direction, of a larger one of a read image obtained by reading the image on the sheet by each of the plurality of imaging units, and a corresponding reference image, in accordance with a size of a smaller one;
• and
• performing verification by comparing the read image corresponding to each of the plurality of imaging units with the corresponding reference image, after the processing been completed.