Bias errors in subpixel displacement estimation for optical correlation-based measurement techniques

Frederik Blumrich

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Bias errors in subpixel displacement estimation for optical correlation-based measurement techniques

机译：基于光学相关的测量技术的亚像素位移估计中的偏差误差

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The systematic error introduced when using 1-D peak detection algorithms to decompose elliptically shaped correlation peaks is investigated. First, an analytical description of this error is derived, and it is shown that this error can lead to a systematic influence of more than one pixel. Additionally, a general linear 2-D Gaussian algorithm based on least squares estimation is presented to allow correlation peak detection of elliptically shaped peaks without any significant bias error. Finally, the performance of the presented algorithms for subpixel displacement estimation, as well as algorithms provided by commercial software packages, is tested with artificial image pairs of random dot patterns.

机译：研究了使用一维峰检测算法分解椭圆形相关峰时引入的系统误差。首先，得出对该误差的分析描述，结果表明该误差可导致一个以上像素的系统影响。此外，提出了一种基于最小二乘估计的通用线性二维高斯算法，可以对椭圆形峰进行相关峰检测，而不会产生任何明显的偏差。最后，使用随机点图案的人工图像对测试了所提出的亚像素位移估计算法以及商用软件包提供的算法的性能。

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来源
《Optical engineering》 |2010年第6期|p.067004.1-067004.11|共11页
作者
Frederik Blumrich;
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作者单位

German Aerospace Center Linder Hoene 51147 Cologne, Germany;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
cross-correlation; subpixel; peak detection algorithm; displace-ment estimation; particle image velocimetry; digital image correlation; projected; pattern correlation.;

机译：互相关亚像素峰值检测算法;位移估计粒子图像测速数字图像相关;投射模式相关。;

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专利

1. Bias errors in subpixel displacement estimation for optical correlation-based measurement techniques [J] . Frederik Blumrich Optical Engineering . 2010,第6期

机译：基于光学相关的测量技术的亚像素位移估计中的偏差误差
2. A digital mask technique for reducing the bias error of the correlation-based PIV interrogation algorithm [J] . Gui L., Fei R., Merzkirch W. Experiments in Fluids: Experimental Methods and Their Applications to Fluid Flow . 2000,第1期

机译：一种用于减少基于相关的PIV询问算法的偏差误差的数字掩码技术
3. Real-Time Optical Measurement of Displacements Using Subpixel Image Registration [J] . Antos J., Nezerka V., Somr M. Experimental Techniques . 2019,第3期

机译：使用子像素图像配准的位移的实时光学测量
4. Analysis and estimation of errors occurring during fiber optic link attenuation measurements by the optical time domain reflectometry technique [C] . Vladimir S. Baskakov, Anton V. Bourdine, Alevtina L. Kosova, Conference on Optical Technologies for Telecommunications . 2006

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5. A correlation-based technique for the high-precision measurement of camera scale-factor. [D] . Minwalla, Cyrus. 2010

机译：基于相关技术的相机比例因子的高精度测量。
6. Potential errors in conventional DOT measurement techniques in shake flasks and verification using a rotating flexitube optical sensor [O] . Sven Hansen, Frank Kensy, Andreas Käser, 2011

机译：摇瓶中常规DOT测量技术中的潜在错误以及使用旋转flexitube光学传感器的验证
7. Implications of bias evolution on measurements of the integrated Sachs-Wolfe effect: errors and biases in parameter estimation [O] . Schaefer, Bjoern Malte, Douspis, Marian, Aghanim, Nabila 2009

机译：偏差演化对集成系统测量的影响 sachs-Wolfe效应：参数估计中的误差和偏差
8. Estimation of Bias Errors in Angle-of-Arrival Measurements Using Platform Motion [R] . Grindlay, A. 1981

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Bias errors in subpixel displacement estimation for optical correlation-based measurement techniques

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