Medical tag recognition and positioning method based on template matching algorithm and edge features

An edge feature and template matching technology, applied in the field of image processing and pattern recognition, can solve the problems of increasing the complexity of recognition and the impact of processing results, and achieve the effect of improving the speed of the algorithm, improving the speed of the algorithm, and optimizing the search position.

Active Publication Date: 2017-09-01
北京联合众为科技发展有限公司
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Problems solved by technology

Injury tickets are often embedded in the chaotic background during the recognition process, and the shaking of the lens itself will also affect the processing results, further increasing the complexity of recognition

Method used

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  • Medical tag recognition and positioning method based on template matching algorithm and edge features
  • Medical tag recognition and positioning method based on template matching algorithm and edge features
  • Medical tag recognition and positioning method based on template matching algorithm and edge features

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Embodiment Construction

[0039] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0040] The invention provides a method for identifying and locating wounded tickets based on a template matching algorithm and edge features. First, the rough positioning of the wounded ticket is carried out through template matching method, and then the geometric features of the edge of the wounded ticket are precisely positioned by using the mathematical morphology method , and verify the matching degree with the template image.

[0041] Specifically include the following steps:

[0042] Step 1. Use the correlation coefficient matching method to roughly locate the injured ticket——determine the ROI (interesting) area

[0043] First, the template image of the injury ticket template is established, and the similarity between the template image and the injury ticket collection image is judged through correlation. Assuming that the template image in the two...

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Abstract

The invention discloses a medical tag recognition and positioning method based on a template matching algorithm and edge features. With the method adopted, a medical tag can be accurately recognized and positioned in an image, and a basis can be provided for automatic detection and recognition. According to the method, a medical tag is recognized through using a template matching method, a region of interest is obtained, so that the rough positioning of the medical tag is realized; the problem of shadow and light on the image is solved through using an adaptive threshold segmentation algorithm, and the coordinates of four corner points of each of three sign blocks are determined through using an edge geometric feature method, and the coordinates of the vertexes of the medical tag are obtained through using the coordinates of the four corner points of each of the three sign blocks, and the precise positioning of the medical tag is realized; and therefore, a basis is provided for the automatic detection and recognition of the medical tag. The matching degree of the medical tag positioned by the using the method of the invention and a template is larger than 80% and the positioning error of the method is smaller than 3 pixels.

Description

technical field [0001] The invention relates to the technical fields of image processing and pattern recognition, in particular to a method for identifying and locating damaged tickets based on a template matching algorithm and edge features. Background technique [0002] Injury tickets are the carrier for medical units to record and count the disease and treatment process, the main basis for statistical medical treatment in health institutions, and also important information and data for logistics support work experience summary and medical research. With the continuous rise of the wave of militarization reform and the innovation of the logistics support system, the use of electronic means to store and circulate injury tickets, make full use of the wounded and sick information and treatment information contained in the injury tickets, and provide efficient logistics support services is an informatization Construction trends. Electronic management of injury tickets plays a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G07D7/202
CPCG07D7/2033
Inventor 蒋昭颖曾伟范珊
Owner 北京联合众为科技发展有限公司
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