Oblique character determination method in image identification

An image recognition and image-based technology, applied in the field of image recognition, can solve problems such as difficulty in satisfying real-time recognition and large amount of calculation, and achieve the effect of simple and feasible judgment method, small amount of calculation, and good real-time performance

Active Publication Date: 2016-05-18
成都数联铭品科技有限公司
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AI Technical Summary

Problems solved by technology

At present, there is a method of using Hough transform to obtain the angle of inclination, and then correct the text, but the calculation amount of this method is extremely large, and it is difficult to meet the real-time requirements of recognition.

Method used

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  • Oblique character determination method in image identification
  • Oblique character determination method in image identification
  • Oblique character determination method in image identification

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Embodiment 1

[0091] In this embodiment, the Chinese character "大中" is used as an example to illustrate the determination process of image text inclination: Figure 6 As shown, the leftmost and rightmost intersection points where a row vector is selected to intersect each stroke of the image text are: the first left intersection point A, the first right intersection point B, the second left intersection point C, the second Right intersection point D, third left intersection point E, third right intersection point F, fourth left intersection point G, and fourth right intersection point H.

[0092] Such as Figure 7 As shown, starting from the first left intersection point A, the second left intersection point C, the third left intersection point E, and the fourth left intersection point G respectively, the edge of the corresponding stroke is traced to the upper left, and the first left end point AEND is less than Threshold Q, to remove the impact of the corresponding inclination angle on th...

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Abstract

The present invention relates to the field of image identification, especially to an oblique character determination method in image identification. In the image character identification, the coordinate points of intersection points crossed with character strokes at left and right sides of a row vector are extracted through selection of the row vector; the intersection points at the left and right sides are taken as origins to respectively track the edge points of corresponding character strokes in the upper left and upper right directions, and the tracking results are respectively stored in a Vector1 and a Vector2; and the oblique direction of characters is determined through comparing the number of two types of elements, and the minimum oblique angle in the larger type is taken as the oblique angle of characters. According to the invention, the calculated amount of oblique angle determination is small, the accuracy of a determination result is high, and the timeliness is good. On the basis of determination of the character oblique direction and angle, the oblique character determination method in image identification solves the problem of character cutting and has a wide application prospect in the image character identification through rectification of oblique characters in an image by an affine transformation.

Description

technical field [0001] The invention relates to the field of image recognition, in particular to a method for judging inclined characters in image recognition. Background technique [0002] With the development of society and the progress of science and technology, a wide variety of audio-visual equipment has enriched people's daily life; electronic equipment with camera and video functions can be seen everywhere, and with the popularization of smart phones, it gradually penetrates into everyone's daily life. A large number of audio-visual equipment has produced a huge number of images and videos, which are rapidly disseminated along with the development of the network and the sharing of social platforms; while a large number of images are disseminated, people's demand for image recognition and image search technologies is also growing rapidly. It can be said that image recognition and image search will become the development direction of search technology. [0003] Among t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/32
CPCG06V10/243
Inventor 陈炳章何宏靖刘世林吴雨浓
Owner 成都数联铭品科技有限公司
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