非接触式人体测量系统中图像几何畸变的校正

Rectification of geometry distortion of the image in non-contacting body measurement system

针对非接触式人体测量系统中广泛采用CCD摄影获取人体数学图像光学成像过程中存在几何畸变的问题,指出在利用数字图像信息进行人体尺寸计算时必须加以校正.本文分析了导致几何畸变的原因,并根据光学成像原理和实验提出了校正的数学模型和方法.经实验验证,该研究成果能够有效地减少光学成像误差.

In the noncontacting body measurement system, a CCD camera is widely used in taking digital images, thereby the body measurement can be gained. There are several kinds of geometry distortion in the course of imaging, it must be rectified when we calculate the body by the digital image information.This paper analyzes the cause of the geometry distortion and raises the rectifying methods and the mathematic model according the principle of optical imaging and experiment. The geometry distortion can be minished effectively by rectification. The result of research gives references to the noncontacting body measurement system.