An automatic hand bone segmentation method based on template

An automatic segmentation and template technology, applied in the field of medical image processing, can solve problems such as large palm contour error, complicated hand bone X-ray image preprocessing, and inaccurate key point positioning, so as to reduce workload and enrich bone development information Effect

Inactive Publication Date: 2019-01-18
HANGZHOU DIANZI UNIV
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Problems solved by technology

[0007] The purpose of the present invention is to solve the problems that the hand bone X-ray film image preprocessing is too complicated in general, the key point positioning is not accurate, the palm outline error is large, and the finger bone boundary is blurred, etc.

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  • An automatic hand bone segmentation method based on template
  • An automatic hand bone segmentation method based on template
  • An automatic hand bone segmentation method based on template

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Embodiment Construction

[0041] The invention aims at the shortcomings of the image preprocessing stage in the current bone age recognition method, and realizes automatic detection and segmentation of hand bones in a new way. Attached below figure 1 , elaborate the implementation details of the scheme, the steps are as follows:

[0042] Step 1. Establish bone age sample library

[0043] First of all, it is necessary to collect bone age samples of various ages, and divide them into three periods (defined as G0, G1, G2) according to the actual situation. The number of samples in each period is 600 as an example (half for men and women).

[0044] For the Gi (i=0,1,2) period: extract the samples of this period from the sample library and divide them into three parts, one part is used as the training set (Trainingset), the other part is used as the verification set (Validationset), and the remaining part is used as Test set (Testset).

[0045] The initial size of these three datasets is Validationset>T...

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Abstract

The invention discloses an automatic hand bone segmentation method based on a template. At first, a bone age sample database is established. Then samples are trained and templates is created, in thesame period of time, templates are createdfor all segments of the bone respectively. Finally, hand bone segmentation is performed based on template. The method extracts intact bone shape features including epiphysis, and more bone development information is contained. At the same time, the method avoids falling into endless tuning parameters; And through the training set update method, the workload of manual annotation is effectively reduced. The invention solves the problem of hand bone segmentation and provides a powerful tool for subsequent bone age assessment.

Description

technical field [0001] The invention relates to the field of medical image processing, in particular to a template-based automatic hand bone segmentation method. Background technique [0002] Bone age is the biological age that reflects the development of the human body, and can more accurately evaluate the maturity of the human body. [0003] Hand bone X-ray film assessment of bone age is currently a bone age detection method commonly used in the industry. According to the differences in the degree of skeletal development of different races, the current domestic evaluation standards such as "CHN method" and "Zhonghua-05 method" are slightly different from foreign evaluation standards such as TW-2, TW-3, and G-P methods in details, but It is the same in principle. [0004] At present, the interpretation of hand bone X-ray films in China is still dominated by medical practitioners. Due to many reasons such as the lack of film sources, strong subjectivity, too complicated sc...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/12G06K9/62
CPCG06T7/12G06T2207/20112G06T2207/20116G06F18/22G06F18/2411G06F18/214
Inventor 何必仕江翔徐哲陈晖朱大荣
Owner HANGZHOU DIANZI UNIV
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