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Text detection method and device, and text information extraction method and system

A text detection and text information technology, applied in character and pattern recognition, instruments, computer parts, etc., can solve problems such as inability to adapt to scene changes, and achieve the effect of improving performance

Active Publication Date: 2018-05-18
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Another problem with this method is that the context information is extracted from a margin region with a fixed size, which cannot adapt to scene changes

Method used

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  • Text detection method and device, and text information extraction method and system
  • Text detection method and device, and text information extraction method and system
  • Text detection method and device, and text information extraction method and system

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Embodiment Construction

[0033] Embodiments of the present invention will be described below with reference to the drawings.

[0034] Note that similar reference numbers and letters refer to similar items in the figures, so that once an item is defined in one figure, it need not be discussed in subsequent figures.

[0035] Please also note that in the present invention, the terms "first", "second", etc. are only used to distinguish elements or steps, and are not intended to indicate chronological order, preference or importance.

[0036] figure 2 is a block diagram showing a hardware configuration of a computer system 1000 capable of implementing an embodiment of the present invention.

[0037] Such as figure 2 As shown in , the computer system includes a computer 1110 . For example, computer 1110 may be a digital camera or a smart phone. Computer 1100 includes processing unit 1120 connected via system bus 1121, system memory 1130, fixed nonvolatile memory interface 1140, removable nonvolatile m...

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Abstract

The present disclosure relates to a text detection method and device, and a text information extraction method and system. A method for detecting text regions in an image comprising at least one Connected Component (CC) is provided. The method comprises: a text background region (TBR) detection step for detecting at least one TBR from the image; a CC filtering step for filtering the at least one CC based on the detected TBR to retain at least one candidate text CC; and a CC combining step, combining the at least one candidate text CC to obtain a text region. The method according to the invention can quickly and / or precisely point out the text position in the image, thereby improving the performance of text detection.

Description

technical field [0001] The present disclosure relates to text detection, and more specifically, the present disclosure relates to a text detection method and device, and a text information extraction method and system. Background technique [0002] Detecting text in images, especially in natural images, is essential for some computer vision applications such as computer assistance for the visually impaired and foreigners, automatic retrieval of images and videos, and machine navigation in urban environments. important. [0003] However, text detection in natural scenes is a difficult topic. Unlike the scanning of printed pages, faxes, business cards, the main challenge lies in the variety of texts: fonts, font sizes, bevels, distortion due to slanting, etc. Environmental factors such as uneven lighting and reflections, poor lighting conditions, and complex backgrounds add further complications. [0004] In the related literature, text detection methods for detecting text ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00
Inventor 麻文华罗兆海
Owner CANON KK
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