IMAGE PROCESSING METHOD, IMAGE PROCESSING APPARATUS, IMAGE FORMING APPARATUS, AND IMAGE READING APPARATUS
First Claim
1. An image processing method for determining presence or absence of write-in in an obtained document image, comprising steps of:
- determining whether the obtained document image is similar to a preliminary reference image;
determining whether write-in is present in the obtained document image when the obtained document image is determined as being similar to the reference image; and
controlling output processing for the obtained document image or the reference image in accordance with the determination result.
2 Assignments
0 Petitions
Accused Products
Abstract
A document matching process section calculates feature points (e.g., the centroid) on the basis of an inputted document image, then selects a plurality of feature points from among the calculated feature points, and then calculates a hash value on the basis of the selected feature points. Then, on the basis of the calculated features, the document matching process section determines whether the document image is similar to a preliminary reference format (reference image). When it is determined as being similar, the document matching process section determines whether write-in is present in the document image, and then outputs a determination signal (a determination result indicating the presence or absence of write-in). In the determination of similarity of the document image, permission or non-permission for processing such as copying is determined more accurately than in the prior art.
17 Citations
18 Claims
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1. An image processing method for determining presence or absence of write-in in an obtained document image, comprising steps of:
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determining whether the obtained document image is similar to a preliminary reference image; determining whether write-in is present in the obtained document image when the obtained document image is determined as being similar to the reference image; and controlling output processing for the obtained document image or the reference image in accordance with the determination result. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An image processing apparatus for determining presence or absence of write-in in an obtained document image, comprising:
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a first determination section which determines whether the obtained document image is similar to a preliminary reference image; a second determination section which, when said first determination section determines that the obtained document image is similar to the reference image, determines whether write-in is present in the obtained document image; and a control section which, in accordance with the determination result of the second determination section, controls output processing for the obtained document image or the reference image. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A computer-readable memory product which stores a computer program for causing a computer to determine presence or absence of write-in in an obtained document image, wherein
the computer program comprises steps of: -
causing the computer to determine whether the obtained document image is similar to a preliminary reference image; and causing the computer to determine whether write-in is present in the obtained document image having been determined as being similar.
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Specification