Management apparatus, management method, and non-transitory computer readable medium
A management apparatus includes a processor configured to cause a camera of an image reading apparatus to capture and read an image of a document bed on which a document is placed, and if a brightness of a read image obtained by reading the document bed differs from a brightness acquired in advance by a threshold value or more, indicate the brightness of the read image in a notification to the image reading apparatus.
1 . A management apparatus comprising:
a processor configured to:
acquire a brightness of a document bed;
cause a camera of an image reading apparatus to capture and read an image of the document bed on which a document is placed;
on the basis of the acquired brightness of the document bed, detect within the read image, a document region corresponding to the document and a background region corresponding to the document bed;
calculate respective brightness values for a plurality of divided regions within the detected document region;
when a difference between a maximum one of the brightness values and a minimum one of the brightness values is greater than or equal to a threshold unevenness value, control the image reading apparatus to perform at least one of: (i) adjusting a reading condition for capturing a subsequent image of the document, and (ii) executing image correction processing on the read image.
2 . The management apparatus according to claim 1 , wherein the processor is configured to cause the camera to capture an image of the document bed on a predetermined interval.
3 . The management apparatus according to claim 2 , wherein the processor is configured to shorten the interval of capturing an image of the document bed in a morning and evening compared to in a daytime.
4 . The management apparatus according to claim 1 , wherein the processor is configured to treat an average of the brightness of multiple portions in the read image as the brightness of the read image.
5 . The management apparatus according to claim 4 , wherein the processor is configured to treat an average of the brightness of portions at four corners of the document bed in the read image as the brightness of the read image.
6 . The management apparatus according to claim 1 , wherein the processor is configured to divide the detected document region into the plurality of divided regions arranged in a uniform grid.
7 . The management apparatus according to claim 1 , wherein the plurality of divided regions comprise regions obtained by dividing the detected document region along both a main scanning direction and a sub-scanning direction.
8 . The management apparatus according to claim 1 , wherein each of the plurality of divided regions has substantially an equal area within the document region.
9 . The management apparatus according to claim 1 , wherein the processor is configured to determine a shape of the document region and divide the document region into the plurality of divided regions conforming to the shape.
10 . The management apparatus according to claim 1 , wherein at least one of the plurality of divided regions is disposed adjacent to an edge portion of the detected document region.
11 . The management apparatus according to claim 1 , wherein the plurality of divided regions comprise a central region and a plurality of peripheral regions surrounding the central region.
12 . The management apparatus according to claim 1 , wherein the plurality of divided regions comprise a set of parallel bands extending in a predetermined direction across the detected document region.
13 . The management apparatus according to claim 1 , wherein the processor is configured to hierarchically divide the detected document region into the plurality of divided regions, each divided region being of progressively smaller size.
14 . The management apparatus according to claim 1 , wherein the detected document region is divided into a predetermined number of the divided regions selected from the group consisting of four regions, nine regions, and sixteen regions.
15 . A management method comprising:
acquiring a brightness of a document bed;
causing a camera of an image reading apparatus to capture and read an image of the document bed on which a document is placed;
on the basis of the acquired brightness of the document bed, detecting within the read image, a document region corresponding to the document and a background region corresponding to the document bed;
calculating respective brightness values for a plurality of divided regions within the detected document region;
when a difference between a maximum one of the brightness values and a minimum one of the brightness values is greater than or equal to a threshold unevenness value, controlling the image reading apparatus to perform at least one of: (i) adjusting a reading condition for capturing a subsequent image of the document, and (ii) executing image correction processing on the read image.
16 . A non-transitory computer readable medium storing a program causing a computer to execute a process for management, the process comprising:
acquiring a brightness of a document bed;
causing a camera of an image reading apparatus to capture and read an image of the document bed on which a document is placed;
on the basis of the acquired brightness of the document bed, detecting within the read image, a document region corresponding to the document and a background region corresponding to the document bed;
calculating respective brightness values for a plurality of divided regions within the detected document region;
when a difference between a maximum one of the brightness values and a minimum one of the brightness values is greater than or equal to a threshold unevenness value controlling the image reading apparatus to perform at least one of: (i) adjusting a reading condition for capturing a subsequent image of the document, and (ii) executing image correction processing on the read image.