2D-3D non-contact type human body measurement method for old people

Abstract

The invention provides a 2D-3D non-contact type human body measurement method for old people, and the method comprises the steps: selecting three-dimensional non-contact type and contact type human body measurement experiment samples, so as to obtain sufficient and comprehensive measurement data; obtaining the size of a feature part based on the experimental sample; carrying out principal component analysis on the size of the feature part to determine a body type classification standard of the elderly; measuring the length and circumference of the main part of the human body based on the bodytype classification standard to obtain a contour curve function and a section curve function; and based on the obtained contour curve function and section curve function, deducing and establishing a 2D-3D size conversion formula, and calculating to obtain size data of each part of the human body of the old people. The body type classification standard suitable for the old people can be expanded, and the 2D-3D non-contact human body measurement method for the old people has the advantages that the cost is low, the operation is simple and convenient, the precision can meet related industrial production requirements, and the method is suitable for market popularization and internet propagation.

Description

technical field [0001] The invention relates to the field of anthropometric measurement, in particular to a 2D-3D non-contact anthropometric method for the elderly. Background technique [0002] Anthropometric systems include methods, techniques, instruments, etc., and are divided into two types: contact and non-contact. The traditional contact method is gradually being replaced by the more cutting-edge non-contact method due to its low efficiency and the vulnerability of the testee to discomfort. Non-contact anthropometric measurement mainly includes three-dimensional body scanning method and two-dimensional direct photography method. [0003] The basic principle of the 3D body scanning method is based on optical measurement, using visual equipment to capture the shape of the object, and then extracting the scanned data through the system software. Its workflow is divided into the following four steps: ① illuminate the scanned object through a mechanically moving light so...

AI Technical Summary

Problems solved by technology

[0007] The objective disadvantages of the existing technology: In terms of measurement systems, the 3D scanning body measurement system has high precision, but the cost and the requirements for the measurement environment are also high, so the market popularity is relatively weak, and most researches tend to "use more advanced scanning devices, further Improvement of measurement accuracy" and "applied research in different fields of scientific research and industrial production"

[0008] In terms of measurement objects, the existing measurement studies for the elderly mostly use time-consuming and labor-intensive contact measurement, or only use the existing measurement system for regional elderly body size data collection and body shape analysis, and seldom involve and take into account the elderly. The physiological and psychological characteristics of this special group of people, so the universality is poor

For example, in terms of physiology, the body shape characteristics and posture of the elderly have changed due to physical aging, long-term labor, etc., and the traditional adult body shape classification methods and standards are no longer applicable. The dimensions of the body and the like need to be paid attention to in detail. If this basis is ignored, and the measurement experiment is carried out randomly by grouping only by age and gender, the universality of the generated anthropometry and its ergonomics database will be greatly reduced, and the reference and applicability will also be greatly reduced. poor

In terms of psychology, most of the elderly are unwilling to be scanned and measured in a closed environment in the state of nude, underwear or tight clothing. Not good at precision

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