Image processing device and image processing method

An image processing device and image technology, which are applied in the fields of instrument, calculation, character and pattern recognition, etc., can solve the problems of difficulty in character cutting and increased calculation amount, etc.

CN104137119AInactive Publication Date: 2014-11-05KK TOSHIBA +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2014-11-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

When there is a significant difference in the difference between the number of character pixels having a gray scale level having the largest number of character pixels and the number of character pixels having a gray scale level having the second largest number of character pixels, an image processing device selects, as an output image, character candidate elements obtained after removing non-character elements in the gray scale level having the largest number of character pixels. When there is not a significant difference in the difference between the number of character pixels having the gray scale level having the largest number of character pixels and the number of character pixels having the gray scale level having the second largest number of character pixels, the image processing device selects, as an output image, character candidate elements obtained after removing non-character elements in the gray scale level having the smallest number of edge pixels.
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Description

technical field

[0001] Embodiments of the present invention relate to an image processing device and an image processing method for extracting characters from image data. Background technique

[0002] Conventionally, there is known a technique for extracting characters by removing the trimmed parts when image data includes trimmed characters. As a specific method, there is the following technology: After converting the image data into a binary image, the characters are cut out according to each grayscale, and it is determined whether the cut out characters are normal characters or hollow characters. Image correction for conversion to normal characters, and characters are obtained. In addition, there is also a technique of performing character recognition on image data by referring to a plurality of character recognition dictionaries, calculating the reliability of characters as the respective execution results, and selecting a recognition result with higher reliability. ...

Examples

Embodiment Construction

[0033] Hereinafter, embodiments of the image processing device according to the present invention will be described in detail based on the drawings. In addition, this invention is not limited by this embodiment. figure 1 It is a block diagram showing the configuration of the image processing system 100 including the image processing device 10 of the present embodiment.

[0034] Such as figure 1 As shown, in this image processing system 100 , a scanner 1 , a handwriting input unit 2 , an HDD recorder 3 , and the like are connected to an image processing device 10 as an input device. Image data from these input devices are input to the image processing device 10 .

[0035] The image processing device 10 includes general-purpose hardware such as a CPU, a memory, a hard disk, and an input / output interface. The image processing device 10 includes an image acquisition unit 21 , a storage unit 22 , a division unit 23 , an extraction unit 24 , a removal unit 25 , a pixel measuremen...