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US 8,477,988 B2Granted
Image processing apparatus, image forming apparatus and computer readable medium
AssigneeFuji Xerox Co., Ltd.
InventorAtsushi Itoh
Life of this patent
Estimating the term…
Abstract
An image processing apparatus has a read image acquisition section and a specific image region extraction section. The read image acquisition section acquires read image data which is obtained by reading a front face and a rear face of a document. The specific image region extraction section extracts, as a specific image region, from among local regions existing at corresponding positions of the front face and the rear face of the read image data, a local region in which an amount of difference of at least one of hue degree, brightness degree or saturation degree between the front face and the rear face is within a predetermined range.
Claims18
An image processing apparatus comprising:
- a read image acquisition section that acquires read image data which is obtained by reading a front face and a rear face of a document;
- a specific image region extraction section that extracts, as a specific image region, from among local regions which exist at corresponding positions of the front face and the rear face of the read image data, a local region in which an amount of difference of at least one of hue degree, brightness degree or saturation degree between the front face and the rear face is within a predetermined range;
- and
- an image region correction section that corrects the specific image region by carrying out image processing in which a region having an area which is equal to or less than a predetermined area is excluded and a region having an area which is more than the predetermined area is retained, with respect to the specific image region extracted by the specific image region extraction section.
1 more element
An image forming apparatus comprising:
- a read image acquisition section that acquires read image data which is obtained by reading a front face and a rear face of a document;
- a specific image region extraction section that extracts, as a specific image region, from among local regions which exist at corresponding positions of the front face and the rear face of the read image data, a local region in which an amount of difference of at least one of hue degree, brightness degree or saturation degree between the front face and the rear face is within a predetermined range;
- a determination section that determines a surface in which exists an image that has generated an offset, on the basis of at least one of the brightness degree in the specific image region of each of the front face and the rear face, the saturation degree in the specific image region of each of the front face and the rear face, or an area of at least one of a foreground color region or a background color region when each of the specific image region of the front face and the specific image region of the rear face is divided into a foreground color region including a foreground color and a background color region including a background color;
- a collation section that collates an image of a specific image region extracted from the surface determined by the determination section, with a predetermined image;
- an image forming section that forms an image on the basis of the read image data;
- and
- a controller that controls image formation by the image forming section on the basis of results of collation performed by the collation section. and
- an image region correction section that corrects the specific image region by carrying out image processing in which a region having an area which is equal to or less than a predetermined area is excluded and a region having an area which is more than the predetermined area is retained, with respect to the specific image region extracted by the specific image region extraction section.
5 more elements
A non-transitory computer readable medium storing a program causing a computer to execute an imaging processing, the processing comprising:
- acquiring read image data which is obtained by reading a front face and a rear face of a document;
- and extracting, as a specific image region, from among local regions which exist at corresponding positions of the front face and the rear face of the read image data, a local region in which an amount of difference of at least one of hue degree, brightness degree or saturation degree between the front face and the rear face is within a predetermined range;
- and
- correcting the specific image region by carrying out image processing in which a region having an area which is equal to or less than a predetermined area is excluded and a region having an area which is more than the predetermined area is retained, with respect to the specific image region extracted by the specific image region extraction section.
1 more element
Dependencies are inferred from the claim text.