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Standardization processing method based on three-dimensional head and face curved surface modeling

A standardized processing and surface modeling technology, applied in 3D modeling, image data processing, electrical/magnetic contour/curvature measurement, etc., can solve problems such as complex implicit surfaces, unsatisfactory effects, and unstructured data

Inactive Publication Date: 2009-01-14
THE QUARTERMASTER EQUIPMENT RESEARCH INSTITUTE OF THE GENERAL LOGISITIC DEPARTME
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Problems solved by technology

[0002] At present, the known optical non-contact measurement method cannot avoid the influence of hair and the shaking of the head during the measurement process, and the amount of data is huge, and the data is generally not structured, so it is not suitable for modeling and analysis of three-dimensional head shape and normalization between multiple headforms
[0003] In addition, the known three-dimensional surface modeling methods of the human body generally use spherical harmonic function series, super quadratic ellipsoid, B-spline surface, finite element, conic surface of rotation, etc. to parameterize and fit the limbs, while fitting the head shape The effect is not ideal, either there are too many control parameters, or the implicit surface is too complex, or the accuracy is poor, and more importantly, its modeling theory fails to take into account the facial features, and its parameters are in multiple heads. After standardization between the head types, the facial features of the standard head type will be seriously lost
[0004] Due to the limitations of the theoretical flaws in 3D head shape modeling, the known head and face size standards (GB / T2428) all use one-dimensional data such as head circumference and head length for standardized processing, and there is no one based on 3D head and face surface modeling. Standardized processing method

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  • Standardization processing method based on three-dimensional head and face curved surface modeling
  • Standardization processing method based on three-dimensional head and face curved surface modeling
  • Standardization processing method based on three-dimensional head and face curved surface modeling

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Embodiment 1

[0051] Three-dimensional surface measurement, modeling and standardization of the head and face of 1161 active male soldiers. And there are 558 people who belong to the round height head shape, and the scale factor distribution of the round height standard head shape and the round height head shape is generated by using this as the grouping sample size. Among them, a representative sample, Yang, male, 19 years old, weighs 62 kilograms, and is 1.72 meters tall.

[0052] The flow chart of the standardized processing method based on three-dimensional head and face surface modeling is shown in figure 1 , mainly including the following steps.

[0053] 1. Use the CT technology of layer-by-slice scanning method to directly obtain head slices from the vertex of the head down to the submental point of each sample, such as Yang, which is parallel to the plane of the eyes and ears when lying flat. The internal structure is densely measured.

[0054] 2. to figure 2 Take the original DI...

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Abstract

The invention relates to a standardized processing method which is based on three-dimensional head face surface modeling, the steps comprise a CT or MRI-based DICOM image measurement method, a modeling method which is based on stratified 12-order Fourier series fitting under a cylindrical coordinate with the forward pole point, a normalization algorithm which has continuity of the measurement method and the modeling method and is based on face feature points and a standardized processing method of the distribution of head size scale factors and head height length index-head width length index two-dimensional distributed head face three-dimensional surface. The standardized processing method of the invention overcomes that the general non-contact measurement methods are affected by hair and shaking when in measurement of head, overcomes the shortcomings of the general three-dimensional head modeling methods on parameter control, precision and face feature reflection aspects and proposes the head face three-dimensional surface standardized processing method.

Description

technical field [0001] The invention relates to a standardized processing method for curved surfaces of the head and face, in particular to a standardized processing method based on modeling of three-dimensional curved surfaces of the head and face. Background technique [0002] At present, the known optical non-contact measurement method cannot avoid the influence of hair and the shaking of the head during the measurement process, and the amount of data is huge, and the data is generally not structured, so it is not suitable for modeling and analysis of three-dimensional head shape and normalization across multiple headtypes. [0003] In addition, the known three-dimensional surface modeling methods of the human body generally use spherical harmonic function series, super quadratic ellipsoid, B-spline surface, finite element, conic surface of rotation, etc. to parameterize and fit the limbs, while fitting the head shape The effect is not ideal, either there are too many co...

Claims

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Application Information

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IPC IPC(8): G01B7/28G06T17/00
Inventor 陈晓周宏祖媛媛蒋毅施楣梧
Owner THE QUARTERMASTER EQUIPMENT RESEARCH INSTITUTE OF THE GENERAL LOGISITIC DEPARTME
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