Image processing apparatus
First Claim
Patent Images
1. An image processing apparatus for processing color images, comprising:
- a feature amount calculation section for calculating a feature amount with respect to a pixel of interest;
a background sensing section for sensing a background density or a background color with respect to a region surrounding the pixel of interest whose feature amount is calculated by the feature amount calculation section;
a plurality of character determination sections for determining whether the pixel of interest corresponds to a character or a line drawing on the basis of the feature amount calculated by the feature amount calculation section, said plurality of character determination sections using mutually different determination methods; and
a character determination selector section for selecting one of determination results output from the character determination sections in accordance with a sensing result output from the background sensing section.
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Abstract
A number of character string determination sections determine whether a pixel of interest corresponds to a character or a line drawing. The character string determination sections use mutually different determination methods. A character determination selector section selects a determination result output from the character determination section that uses a determination method most suited to a background sensing result obtained by a background sensing section. In this manner, either the character or the line drawing can be determined using an efficient method in accordance with the background state of a color image.
10 Citations
9 Claims
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1. An image processing apparatus for processing color images, comprising:
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a feature amount calculation section for calculating a feature amount with respect to a pixel of interest; a background sensing section for sensing a background density or a background color with respect to a region surrounding the pixel of interest whose feature amount is calculated by the feature amount calculation section; a plurality of character determination sections for determining whether the pixel of interest corresponds to a character or a line drawing on the basis of the feature amount calculated by the feature amount calculation section, said plurality of character determination sections using mutually different determination methods; and a character determination selector section for selecting one of determination results output from the character determination sections in accordance with a sensing result output from the background sensing section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification