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Three-dimensional model creation method and device

A three-dimensional model and three-dimensional technology, applied in the field of security inspection, can solve problems such as lack of information on "objects"

Active Publication Date: 2018-01-30
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing research goal is often the target detection of a specific object, and mainly relies on density and atomic number information, lacking the understanding of "object" information

Method used

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  • Three-dimensional model creation method and device
  • Three-dimensional model creation method and device

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Embodiment Construction

[0017] Specific embodiments of the present invention will be described in detail below, and it should be noted that the embodiments described here are only for illustration, not for limiting the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one of ordinary skill in the art that these specific details need not be employed to practice the present invention. In other instances, well-known structures, materials or methods have not been described in detail in order to avoid obscuring the present invention.

[0018] Throughout this specification, reference to "one embodiment," "an embodiment," "an example," or "example" means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in the present invention. In at least one embodiment. Thus, appearances of the phrases "in ...

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Abstract

A method and apparatus for creating a three-dimensional model of an object are disclosed. The method comprises the steps of: using a CT imaging system to acquire tomographic data of checked luggage; interpolating the tomographic data to generate three-dimensional volume data of checked luggage; performing unsupervised segmentation on the three-dimensional volume data of checked luggage to obtain multiple divided area; perform isosurface extraction on multiple segmented areas to obtain the corresponding isosurface; perform three-dimensional surface segmentation on the isosurface to form a three-dimensional model of each object in the checked luggage. Using the above solution, the three-dimensional model of the object in the checked baggage can be established more accurately, thereby providing a better basis for subsequent shape feature extraction and security inspection, thereby reducing missed inspections.

Description

technical field [0001] The invention relates to a security check on an object, in particular to a method and device for creating a three-dimensional model. Background technique [0002] Perspective imaging is an important means in the field of security inspection. The typical application process is: the device performs perspective scanning and imaging of luggage items, and the map inspector passes through the map, manually marks the suspect area, and makes a semantic description of the area, such as "lighter", "A bottle of wine" and so on. This process relies too much on human factors, and under the influence of factors such as the extremely low probability of real dangerous objects, limited experience of map inspectors, and fatigue, it will lead to missed inspections and serious consequences. [0003] The typical means to solve this problem is mainly based on automatic auxiliary detection, supplemented by increasing the interaction between equipment and security inspectors...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T17/10
CPCG06T2207/10081G06T2207/30112G06T7/11G06T7/187G06V20/653G06V2201/05G01V5/226G06T17/00
Inventor 陈志强张丽赵自然李强顾建平黄清萍
Owner TSINGHUA UNIV
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