1 中国科学院光电研究院，北京 100094
2 合肥工业大学 仪器科学与光电工程学院，安徽 合肥 230009
高精度角度测量装置是保证旋转设备精度和性能的关键，广泛应用于测量跟踪仪器中，特别是对于大尺寸坐标测量仪器，测角相比于测距是制约坐标测量精度的瓶颈。在精密一维轴系平台上，采用高精度柱面光栅及四个读数头构建测角装置，对传感器本身、安装及轴系跳动等误差因素对测角精度的影响进行了详细分析。基于角度测量标准器具校准角度测量误差，对误差数据进行谐波分析。基于遗传算法提出了一种参数优化方法，建立误差补偿模型，对测角误差进行了补偿。实验结果显示，补偿后柱面光栅测角误差减少为±0.7″，证明了误差补偿算法的有效性，显著地提高了角度测量精度。
测角 柱面光栅 误差补偿 谐波 遗传算法 angle measurement cylindrical grating error compensation harmonic genetic algorithm
Author Affiliations
Abstract
1 School of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China
2 State Key Laboratory of Fundamental Science on Synthetic Vision, Sichuan University, Chengdu 610065, China
A method to reduce crosstalk in multi-view autostereoscopic three-dimensional (3D) displays based on the lenticular sheet is proposed. Correcting the luminance values of each parallax image displayed on the display screen is employed. We analyze the causes of crosstalk. We deduce the formulas of crosstalk reduction according to the relationship between crosstalk coefficients of each parallax image observed through the lenticular sheet, luminance values of each parallax image displayed on the display screen, and luminance values of each parallax image observed through the lenticular sheet at each viewing position. Experimental results verify the effectiveness of the proposed method.
自由立体显示 柱面光栅 串扰 100.0100 Image processing 100.6890 Three-dimensional image processing Chinese Optics Letters
2011, 9(2): 021001
