Image scanning device and method, image reading apparatus, and non-transitory computer readable medium that set a scanning area based on a detected location of a code image

An image scanning device comprising:

• a processor that acts as:
• a detector that scans an image in units of pages, and detects a code image included in the image in units of pages;
• and
• a setter that sets, when the detector detects the code image on one page, a scanning area for scanning the code image on a subsequent page following the one page in accordance with a position at which the code image is detected,
• wherein, when the code image is detected on the one page, the processor acting as the setter sets an area that includes the position at which the code image is detected and that is smaller than a whole page as a scanning area on the subsequent page, and
• wherein the processor acting as the setter additionally sets an area that includes a position different from a code image detection position, the code image detection position being the position at which the code image is detected, and that is symmetric about a page center with the code image detection position as the scanning area.

An image scanning method comprising:

• scanning an image in units of pages, and detecting a code image included in the image in units of pages;
• and
• when the code image is detected on one page and then on another page, setting a scanning area on a subsequent page following the other page in accordance with a position of the code image detected on the one page and a position of the code image detected on the other page,
• wherein, when the position of the code image detected on the one page matches the position of the code image detected on the other page or when an amount of misalignment between the position of the code image detected on the one page and the position of the code image detected on the other page is less than a predetermined amount of misalignment, setting an area that includes the position of the code image detected on the one page and the position of the code image detected on the other page and that is smaller than a whole page as a scanning area on the subsequent page.

A non-transitory computer readable medium storing a program causing a computer to execute a process, the process comprising:

• scanning an image in units of pages, and detecting a code image included in the image in units of pages;
• and
• when the code image is detected on one page and then on another page, setting a scanning area on a subsequent page following the other page in accordance with a position of the code image detected on the one page and a position of the code image detected on the other page,
• wherein, when the position of the code image detected on the one page matches the position of the code image detected on the other page or when an amount of misalignment between the position of the code image detected on the one page and the position of the code image detected on the other page is less than a predetermined amount of misalignment, setting an area that includes the position of the code image detected on the one page and the position of the code image detected on the other page and that is smaller than a whole page as a scanning area on the subsequent page.

A non-transitory computer readable medium storing a program causing a computer to execute a process, the process comprising:

• scanning an image in units of pages, and detecting a code image included in the image in units of pages;
• and
• when the code image is detected on one page, setting a scanning area for scanning the code image on a subsequent page following the one page in accordance with a position at which the code image is detected,
• wherein, when the code image is detected on the one page, setting an area that includes the position at which the code image is detected and that is smaller than a whole page as a scanning area on the subsequent page, and
• additionally setting an area that includes a position different from a code image detection position, the code image detection position being the position at which the code image is detected, and that is symmetric about a page center with the code image detection position as the scanning area.