Object linear contour detection method

A contour detection and straight line technology, applied in character and pattern recognition, computer components, calculations, etc., to avoid interference and fitting errors, reduce running time and calculation, and improve robustness and accuracy

Pending Publication Date: 2022-03-04
HANGZHOU DIANZI UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The object of the present invention is to provide a method for detecting the linear contour of an object, which solves the problem that it is difficult to obtain robust and accurate object contour detection on the basis of low time complexity and low space complexity in the prior art. The detected linear outline of the object can fit the real situation

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Embodiment Construction

[0048] In order to enable people in the technical field to better understand the purpose, technical solutions and advantages of the present invention, further detailed description will be given below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the described embodiments are only used to explain related inventions, not to limit the inventions. In addition, it should be noted that, for ease of description, detailed descriptions of well-known systems, devices, circuits and methods are omitted, so as not to obscure the description of the present invention with unnecessary details.

[0049] An object linear profile detection method involved in the example of the present invention is mainly applied to object linear profile detection equipment or equipment, and the object linear profile detection equipment or equipment can be devices with data processing functions such as single-chip microcomputers, mobile phones, computers, and ...

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Abstract

The invention discloses an object linear contour detection method. The method comprises the steps that a card image is obtained and preprocessed to obtain a to-be-detected card image; obtaining a corrected multi-scale sampling image through a multi-scale smoothing and preset smoothing module; processing the obtained continuous feature pixel points by using a nearest neighbor operator; and combining a subtraction module and binarization to carry out scale combination to obtain a linear contour diagram of the to-be-measured card image, and thus obtaining a linear contour of the object. The frame of the card is detected in an image edge detection mode, operation time and calculation amount are reduced, misjudgment in the presence of irrelevant complex textures, patterns or noise is avoided, the robustness and precision of object linear contour detection are improved, and the detection accuracy of the object linear contour is improved. And convenience is provided for subsequent object information extraction and other processing.

Description

[0001] technology neighborhood [0002] The invention relates to the application field of image processing, in particular to a method for detecting the linear outline of an object. Background technique [0003] In the context of the current era of rapid development of "+Internet" and digitalization, monitoring, automatic driving and industrial assembly lines often need to identify objects with complex surface features, and industries that borrow information such as social software, third-party payment platforms, and rental platforms are also Users need to use manual input or card recognition to enter information such as ID cards, bank cards, and student ID cards, and card recognition is highly respected by the society for its convenience and efficiency. Most of these objects, such as lanes, ID cards, and products, have a large number of straight-line features, and object recognition is usually performed on the basis of extracting the straight-line outline of the object. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06V10/44G06V10/34
Inventor 陈小雕杨康陈鸿宇潘相会
Owner HANGZHOU DIANZI UNIV
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