分析了用夫朗荷费衍射测量微小尺寸的原理误差，包括夫朗荷费近似误差和极值特征点位置探测误差。
Analyzes the principle errors in measuring small dimensions by Fraunhofer diffraction, including Fraunhofer approximation error and the place detecting error of extreme value characteristic aspect.
利用显微视觉技术对光掩模的特征尺寸进行了测量。
In this paper, micro vision was used to make measurements on the feature size of photomask.
针对组合形状零件几何尺寸测量中的关键问题—轮廓识别，提出了一种基于弧长的轮廓特征点提取的方法。
An approach to extract feature points on the boundary based on length of arc is proposed in view of the key problem of measuring composite-shape parts.
本文阐述测量运动目标的主要特征——外形尺寸与姿态的方法。
A method to measure the main signatures-the contour dimensions and the attitude of a moving target is presented.
轮廓的尺寸量、位置量以及形状误差估计值的不确定度与测量误差、被测轮廓的形状特征以及采样策略等有关。
Sampling strategy, measurement errors and measured contour form features are all related to the uncertainty analysis for dimension, position and form error estimated.
提出了以实体模型、测量要素、定形尺寸、定位尺寸、行为约束为构造成份的特征模型；
The feature model presented here is consisted ot five components: solid model, measure elements, size dimensions, and location dimensions as well as constrains behaviour.
本文利用改进的OTSU阈值方法测量人体空间三维尺寸的带标定框图像，为后续的特征点提取和三维拟合计算打下良好的基础。
The traditional OTSU threshold method has been improved in order to establish a good foundation for feature extraction and the fitting of 3D in image process with calibration plate.
本文利用改进的OTSU阈值方法测量人体空间三维尺寸的带标定框图像，为后续的特征点提取和三维拟合计算打下良好的基础。
The traditional OTSU threshold method has been improved in order to establish a good foundation for feature extraction and the fitting of 3D in image process with calibration plate.
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