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Method and apparatus for text detection

A text detection, text area technology, applied in character and pattern recognition, instrumentation, computing, etc., can solve problems such as component error grouping, error detection results, etc.

Active Publication Date: 2022-05-31
CANON KK
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the case where the layout of the text is complex, or in the case where multiple text lines with different directions are located in a local area, the methods disclosed above can only detect text in a specific direction, making the text in different text lines Components are incorrectly grouped into the same group and lead to false detection results

Method used

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Embodiment Construction

[0039] With reference to the figures listed above, this section describes specific embodiments and their detailed construction and operation. Note that only

[0040] FIG. 1 is a block diagram showing a hardware configuration of a computer system that implements an embodiment of the present invention.

[0041] As shown in FIG. 1, the system includes at least a computer 100, and the computer 100 includes a CPU 101, a RAM 102, a ROM 103,

[0042] The CPU 101 performs overall processing according to programs stored in the RAM 102 or the ROM 103. RAM 102 in CPU 101

[0043] The input device 105 may be an image capture device (eg, a scanner, a digital camera, etc.), or a device that enables a user to

[0044] The output device 106 includes an output peripheral interface, a display device (eg, a monitor, CRT, liquid crystal display, or

[0046] The system bus 104 connects the CPU 101, RAM 102, ROM 103, input device 105, output device 106 and drivers

[0047] Typically, the input to the ...

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Abstract

The present invention provides a method and device for text detection. The invention is used for locating the text area in the natural scene image. The disclosed content relates to a text detection method and device, and a text information extraction method and system. The method for detecting a text region in an image includes: generating components according to an input image; generating a component connection connecting the two components based on the similarity between feature values ​​of any two components; The direction distribution of the connection determines the main direction for each component connected by the component connection as the main direction of each component; based on the difference between the main direction of the component and the direction of the component connection of the connected components, the components connected by the component connection grouping into at least one component group; and generating a text area based on the at least one component group. Compared with the prior art, the present invention can precisely locate the text area in the image, and the detection result can be further used for text recognition.

Description

Method and apparatus for text detection technical field The present invention relates to computer vision, image processing and understanding, relate in particular to a kind of multidirectional text detection method and device. Background technique [0002] Text in natural scene images or video frames carries important information for visual content understanding and retrieval. Extracting textual information or detecting text in images, especially in natural images or video frames, is very important for many computer vision applications (for example, computerized assistance for visually impaired persons or foreigners, automatic retrieval of images or videos, and urban for robot navigation in the environment, etc.) is crucial. However, text retrieval in natural scenes is a difficult problem, The main challenge lies in diverse texts with different fonts, sizes, oblique angles or distortions, etc. like uneven illumination and environmental factors such as reflections...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06V10/22G06V10/50G06V10/764G06V10/74G06V30/19
CPCG06V10/22
Inventor 马彬
Owner CANON KK
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