Image detection method and apparatus, and apparatus used for image detection

An image detection and image technology, which is applied in the field of image processing, can solve the problems of unclear document boundaries and infeasibility of finding document boundaries, etc., and achieve the effects of improving image clarity, reducing computation load, and improving accuracy

Inactive Publication Date: 2016-12-21
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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Problems solved by technology

However, because the gradient difference between the text inside the document and the background (usually white paper) is too obvious and dense, and the boundary of the document is not obvious, it is basically impossible to directly find the boundary of the document

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  • Image detection method and apparatus, and apparatus used for image detection
  • Image detection method and apparatus, and apparatus used for image detection
  • Image detection method and apparatus, and apparatus used for image detection

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[0051]Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0052] figure 1 is a flow chart of an image detection method shown according to an exemplary embodiment, such as figure 1 As shown, the method is used in a terminal such as a mobile terminal, a personal computer (Personal Computer, PC) or a server, and includes the following steps.

[0053] Step S11, performing binarization processing on the image to be detected to obtain a processed ...

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Abstract

The invention relates to an image detection method and apparatus, and an apparatus used for image detection. The method comprises the following steps: performing binary processing on images to be detected so as to obtain processed images; performing edge detection on the processed images so as to obtain images after edge detection; searching the images after the edge detection for a connected domain; and determining a connected domain where a character portion is disposed in the connected domain. The method can detect the character portion in the images so that document boundaries in the images can be conveniently positioned in an area beside the character portion.

Description

technical field [0001] The present disclosure relates to the technical field of image processing, and in particular to an image detection method, device and device for image detection. Background technique [0002] Automatic document detection is a relatively popular technology in the field of image processing today. The general process is to use straight line detection combined with filtering to obtain the four sides of the document, and then use the transformation matrix to restore the paper to a rectangle for subsequent processing. [0003] In the related art, when detecting the boundary of a whiteboard (identity card, credit card, ppt, blackboard, whiteboard), the boundary detection can be directly performed. However, because the gradient difference between the text inside the document and the background (usually white paper) is too obvious and dense, and the boundary of the document is not obvious, it is basically impossible to directly find the boundary of the document...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/38G06K9/46
CPCG06V30/414G06V10/28G06V10/44
Inventor 龙飞陈志军杨松
Owner BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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