Image-processing apparatus which has an image region distinction processing capability, and an image region distinction processing method

An image region distinction processing method of an image-processing apparatus, comprising:

• an image data generation step of generating first image data from information read from an original document;
• a first region distinction processing step of generating a character determination signal and edge feature amount image data by making a distinction between a character and a non-character based on a previously set threshold value on the first image data generated by the image data generation step;
• a step of making a distinction between a character and a non-character based on the threshold value on the edge feature amount image data, and generating and displaying sub-region images obtained by division into a plurality of parts according to a distinction result and an adjustment bar for discrimination strengths of the sub-region images;
• a correction parameter acquisition step of making a discrimination strength adjustment by the adjustment bar and acquiring a correction parameter of the edge feature amount image data by adjustment;
• a second region distinction processing step of causing the correction parameter to be reflected in the distinction between the character and the non-character on second image data generated from information re-read from the original document by the image data generation step and making the distinction;
• and
• an output step of performing an image correction different for each type of distinction image regions of the character and the non-character distinguished by the second region distinction processing step and making an output.

An image region distinction processing method of an image-processing apparatus, comprising:

• an image data generation step of generating first image data from information read from an original document;
• an image storage step of storing the first image data;
• a first region distinction processing step of generating a character determination signal and edge feature amount image data by making a distinction between a character and a non-character based on a previously set threshold value on the first image data;
• a step of making a distinction between a character and a non-character based on the threshold value on the edge feature amount image data, and generating and displaying sub-region images obtained by division into a plurality of parts according to a distinction result and an adjustment bar for discrimination strengths of the sub-region images;
• a correction parameter acquisition step of making a discrimination strength adjustment by the adjustment bar and acquiring a correction parameter of the edge feature amount image data by adjustment;
• read again from the original document by the image data generation step
• a second region distinction processing step of reading the first image data stored at the image storage step, causing the correction parameter to be reflected in the distinction between the character and the non-character on the first image data and making the distinction;
• and
• an output step of performing an image correction different for each type of distinction image regions of the character and the non-character distinguished by the second region distinction processing step and making an output.