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Text detection method and device

A text detection, non-text technology, applied in the direction of instruments, character and pattern recognition, computer components, etc., can solve the problems of low resolution noise, low accuracy of text detection, etc., to achieve the effect of improving accuracy and reducing misjudgment

Inactive Publication Date: 2019-07-05
CHINA MOBILEHANGZHOUINFORMATION TECH CO LTD +1
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Problems solved by technology

[0004] However, in the prior art, when the quality of the picture in the natural scene is poor, the resolution is low, or the noise in the environment is large, if the MSER algorithm is used to detect the text area in the natural scene, it will make the text The accuracy of detection is low, for example, the non-text area in the natural scene is misjudged as a text area

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Embodiment Construction

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0043] The invention provides a method for text detection, which can be applied to detect text regions in natural scene images, especially for fuzzy images, images with low resolution or images with small letters, and has a relatively accurate detection rate. Such as figure 1 As shown, the method is as follows:

[0044] Step S11: According to the Maximally Stable Extremal Regions (MSER) ​​algorithm, the image to be detected is processed to obtain the first candidate region.

[0045] The MSER algorithm is based on the concept of watershed: the image is binarized, and the binarization threshold is set to [0,255], so that the binarized image goes through a process from all black to all white (like a bird's-eye view of rising water levels ). In this process, the area of ​​some ...

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Abstract

The invention discloses a text detection method and device, and the method comprises the steps: carrying out the processing of a to-be-detected image according to a maximum stable extreme value regionalgorithm, and obtaining a first candidate region; processing the to-be-detected image according to an edge detection algorithm to obtain a second candidate area; and obtaining a text area in the to-be-detected image according to the first candidate area and the second candidate area. By adopting the method and the device provided by the invention, the text area detection accuracy can be improved.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a text detection method and device. Background technique [0002] Text serves as an important source of information that complements the general vision in the scene. Mining and utilizing the high-level semantics hidden in the text can obtain more accurate and rich context information. The development of modern technology and human society has also put forward an urgent need for text detection and recognition in natural scenes. Perhaps in the near future, driverless cars with text recognition capabilities can accurately find the destination according to the instructions on the road signs. With the help of devices that can automatically read text, you can easily read or go shopping. [0003] Currently, text detection in natural scenes is still an open and challenging problem. In the prior art, a Maximally Stable Extremal Regions (MSER) ​​algorithm is usually used to...

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Application Information

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IPC IPC(8): G06K9/00G06K9/20
CPCG06V30/413G06V10/225G06V10/22
Inventor 夏向兰
Owner CHINA MOBILEHANGZHOUINFORMATION TECH CO LTD
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