Image processing apparatus capable of extracting rule from document image with high precision
AssigneeKonica Minolta Business Technologies, Inc.
InventorKazuya Yago
Life of this patent
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Abstract
An image processing apparatus scans image data along a row in an x direction, and if a series of black pixels having a length equal to or more than a first threshold is detected, the series of black pixels is determined as a rule and erased. Furthermore, if a series of black pixels having a length equal to or more than a second threshold that is connected to the rule and extends in a y direction is detected, the series of black pixels is determined as a rule and erased.
Claims20
An image processing apparatus, comprising:
- an image data obtaining unit for obtaining image data;
- and
- a rule extracting unit for extracting a rule from said image data,
- wherein said rule extracting unit includes:
- a first determining unit for scanning said image data in a first direction and, if a first series of pixels having a length equal to or more than a first threshold is detected, determining said first series of pixels as a first rule;
- and
- a second determining unit for scanning said image data from said first rule in a second direction and, if a second series of pixels having a length equal to or more than a second threshold connected to said first rule is detected, determining said second series of pixels as a second rule, and
- said second threshold is smaller than said first threshold.
An image processing apparatus, comprising:
- an image data obtaining unit for obtaining image data;
- and
- a rule extracting unit for extracting a rule from said image data,
- wherein said rule extracting unit includes:
- a first determining unit for scanning said image data in a first direction and, if a first series of pixels having a length equal to or more than a first threshold is detected, determining said first series of pixels as a first rule;
- and
- a second determining unit for scanning said image data in a second direction which is at an angle equal to or more than 0 degrees and less than 90 degrees with respect to said first direction and, if a second series of pixels having a length equal to or more than a second threshold connected to said first rule is detected, determining said second series of pixels as a second rule.
A rule extracting program product causing a computer to perform rule extraction processing in an image processing apparatus, said rule extraction processing comprising:
- an image data obtaining step of obtaining image data;
- a first extraction step of scanning said image data in a first direction and, if a first series of pixels having a length equal to or more than a first threshold is detected, determining said first series of pixels as a first rule and extracting said first series of pixels;
- and
- a second extraction step of scanning said image data from said first rule in a second direction and, if a second series of pixels having a length equal to or more than a second threshold connected to said first rule is detected, determining said second series of pixels as a second rule and extracting said second series of pixels, said second threshold being smaller than said first threshold.
Dependencies are inferred from the claim text.