Image processing method, image processing apparatus, and storage medium for determining an area in a read image
First Claim
1. An image processing method, comprising:
- acquiring an image read by a reading apparatus, wherein the image is of a predetermined area of a platen that is covered by a platen cover and includes one original or plural originals;
extracting, from the acquired image, each object area corresponding to at least one original in the acquired image;
obtaining a first feature quantity corresponding to the platen cover;
determining, in a case where a plurality of object areas are extracted from the acquired image, a second feature quantity of an image area that is within a first area containing the extracted plurality of object areas and is outside of each of the extracted plurality of object areas; and
determining whether the acquired image includes one original or plural originals,wherein, in a case where a difference between the obtained first feature quantity corresponding to the platen cover and the second feature quantity of the image area that is outside of the extracted plurality of object areas is equal to or smaller than a predetermined threshold value, determining includes determining that the acquired image includes plural originals and that each extracted object area corresponds to one original from the plural originals.
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Accused Products
Abstract
There is provided an image processing method which determines the area of a document from an image read on a transparent platen, the image processing method also determines a single object area or a plurality of object areas from the image on the transparent platen, and when the luminance of the area in which the object area is removed from the image on the transparent platen is detected to determine the document area, the image processing method detects whether or not an image of a shadow exists around the periphery of the object area on the image of the transparent platen, and the threshold value used for determining the document area is different depending on whether a shadow is detected.
20 Citations
18 Claims
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1. An image processing method, comprising:
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acquiring an image read by a reading apparatus, wherein the image is of a predetermined area of a platen that is covered by a platen cover and includes one original or plural originals; extracting, from the acquired image, each object area corresponding to at least one original in the acquired image; obtaining a first feature quantity corresponding to the platen cover; determining, in a case where a plurality of object areas are extracted from the acquired image, a second feature quantity of an image area that is within a first area containing the extracted plurality of object areas and is outside of each of the extracted plurality of object areas; and determining whether the acquired image includes one original or plural originals, wherein, in a case where a difference between the obtained first feature quantity corresponding to the platen cover and the second feature quantity of the image area that is outside of the extracted plurality of object areas is equal to or smaller than a predetermined threshold value, determining includes determining that the acquired image includes plural originals and that each extracted object area corresponds to one original from the plural originals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A non-transitory storage medium which can be read by an information processing apparatus connected to an image reading apparatus and to which a program code executed by the information processing apparatus is stored, the program code comprising:
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acquiring an image read by a reading apparatus, wherein the image is of a predetermined area of a platen that is covered by a platen cover and includes one original or plural originals; extracting, from the acquired image, each object area corresponding to at least one original in the acquired image, obtaining a first feature quantity corresponding to the platen cover; determining, in a case where a plurality of object areas are extracted from the acquired image, a second feature quantity of an image area that is within a first area containing the extracted plurality of object areas and is outside of each of the extracted plurality of object areas; and determining whether the acquired image includes one original or plural originals, wherein, in a case where a difference between the obtained first feature quantity corresponding to the platen cover and the second feature quantity of the image area that is outside of the extracted plurality of object areas is equal to or smaller than a predetermined threshold value, determining includes determining that the acquired image includes plural originals and that each extracted object area corresponds to one original from the plural originals.
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12. An image processing apparatus comprising:
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an acquiring unit configured to acquire an image read by a reading apparatus, wherein the image is of a predetermined area of a platen that is covered by a platen cover and includes one original or plural originals; an extracting unit configured to extract, from the acquired image, each object area corresponding to at least one original in the acquired image; an obtaining unit configured to obtain a first feature quantity corresponding to the platen cover; a determining unit configured to, in a case where a plurality of object areas are extracted from the acquired image, determine a second feature quantity of an image area that is within a first area containing the extracted plurality of object areas and is outside of each of the extracted plurality of object areas, and determine whether the acquired image includes one original or plural originals, wherein, in a case where a difference between the first feature quantity corresponding to the platen cover obtained by the obtaining unit and the second feature quantity of the image area that is outside of the extracted plurality of object areas is equal to or smaller than a predetermined threshold value, the determining unit determines that the acquired image includes plural originals and that each extracted object area corresponds to one original from the plural originals. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification