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Chinese character image zooming method based on bilinear operator

An image scaling and bilinear technology applied in the field of image processing

Inactive Publication Date: 2015-06-10
EAST CHINA UNIV OF SCI & TECH
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AI Technical Summary

Problems solved by technology

Usually, to obtain high-speed real-time image output, it is necessary to use a relatively simple interpolation algorithm with low computational complexity; to obtain high-precision image processing results, it is necessary to sacrifice speed and use a relatively complex algorithm

Method used

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  • Chinese character image zooming method based on bilinear operator
  • Chinese character image zooming method based on bilinear operator
  • Chinese character image zooming method based on bilinear operator

Examples

Experimental program
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Embodiment Construction

[0024] Step 1, read in the target Chinese character image and convert it to a two-dimensional grayscale space.

[0025] Step 2, quantify the Chinese character image obtained in step 1 to distinguish the area where the Chinese character is located from the background area.

[0026] Analyze each pixel of the Chinese character image obtained in step 1. If its value is greater than the threshold, change the value of the point to 255 and position it as the background of the target Chinese character; otherwise, change its value to 0 to position it is the target Chinese character. The threshold is chosen as 220.

[0027] Step 3, segment the Chinese character image obtained in step 2, and remove the redundant background in the Chinese character image.

[0028] Detect the Chinese character image matrix obtained in step 2 in units of rows and columns from the outside to the inside from the four directions of top, bottom, left, and right, delete the rows and columns whose values ​​are ...

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Abstract

The invention discloses a Chinese character image zooming method based on a bilinear operator. The Chinese character image zooming method based on the bilinear operator uses the bilinear operator to complete zooming of a Chinese character image. The Chinese character image zooming method based on the bilinear operator includes steps of target Chinese character image preprocessing, target Chinese character image cutting and Chinese character image zooming based on the bilinear operator. A large number of experiments show that the Chinese character image zooming method based on the bilinear operator is effective, and can obtain an accurate experiment result.

Description

technical field [0001] The invention mainly relates to image processing technology, and in particular to a Chinese character image scaling method based on a bilinear operator. Background technique [0002] According to research, the image information acquired by eyes accounts for more than 80% of all human sensory information. Compared with voice or text information, images contain more vivid, richer, and more intuitive information content, and have higher use efficiency and wider use. Image processing generally refers to digital image processing. Digital images are stored and transmitted in digital form. Digital image processing has the advantages of high quality, miniaturization, and strong anti-noise ability. The hardware implementation is simple. Therefore, digital image processing technology is an image processing technology. core of the research. In many fields, digital image processing technology has become an effective tool to study visual perception. With the dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/40
Inventor 袁玉波刘赟陈志华张静应方立戴光辉
Owner EAST CHINA UNIV OF SCI & TECH
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