Broken bone model coarse registration method and system and broken bone model registration method

A coarse registration and bone-breaking technology, applied in the field of image processing, can solve problems such as differences in bone size, wrong matching results, affecting the accuracy of matching, etc., and achieve the effect of avoiding use, wide application, and easy implementation.

Active Publication Date: 2019-09-27
UNIV OF JINAN
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Problems solved by technology

When applied to bone model matching, since human bones are similar in shape, other people's bones can be used as sample bones for matching, and certain results can be achieved. However, when faced with size differenc

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  • Broken bone model coarse registration method and system and broken bone model registration method
  • Broken bone model coarse registration method and system and broken bone model registration method

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[0054] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0055] Key terms appearing in the present invention are explained below.

[0056] figure 1 and figure 2 is a schematic flow chart of a rough registration method for a broken bone model according to an embodiment of the present invention.

[0057] see figure 1 and figure 2 , a rough registration method for a broken bone model desc...

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Abstract

The invention provides a broken bone model coarse registration method, a broken bone model coarse registration system and a broken bone model registration method. The broken bone model coarse registration method comprises the following steps: reconstructing a CT image of a fractured bone to obtain a group of broken bone models; correspondingly extracting point cloud data on each broken bone model, and respectively converting each broken bone model into a corresponding broken bone point cloud model; correspondingly calculating a rotation matrix and a displacement matrix between each broken bone point cloud model and the sample bone point cloud model; and performing displacement rotation on each broken bone point cloud model according to the respective corresponding rotation matrix and displacement matrix to obtain a broken bone point cloud model of each broken bone point cloud model after displacement rotation, and completing coarse registration. The broken bone model registration method and device are used for realizing registration of broken bone models which cannot provide axes and realizing registration of broken bone models in a one-to-many manner, thereby facilitating improvement of registration precision.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a rough registration method and system for a broken bone model and a registration method for a broken bone model. Background technique [0002] In recent years, computer-aided orthopedic technology has become a popular research. It extracts information about the bone from the CT image of the patient's fractured bone for three-dimensional reconstruction, obtains the patient's broken bone model, and then registers the patient's broken bone model. Thus, the complete bone model corresponding to the fracture bone is obtained. [0003] In the actual registration process, the broken bone model needs to be preprocessed, that is, coarse registration. At present, there are mainly two coarse registration methods, one is to use the bone axis to align the bones, and the other is to use the local model to match the overall model. For the method of aligning bones using the axis of th...

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Application Information

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IPC IPC(8): G06T7/33G06T19/20
CPCG06T7/344G06T19/20G06T2219/2016G06T2219/2004G06T2200/04G06T2207/10028G06T2207/30008
Inventor 赵秀阳刘俊凯
Owner UNIV OF JINAN
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