|
|
Study on Improved Sierra Dithering Algorithm for Micro-defocusing Projector Three-dimensional Profile Measurement Technology |
WEI Xiao-hua1,XU Wen-jun1,XU Xue-ya2 |
1. School of Mechanical and Electrical Engineering, Quzhou College of Technology, Quzhou, Zhejiang 324000, China
2. School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou, Zhejiang 310018, China |
|
|
Abstract The traditional frequency modulation of the phase profile measurement techniqueis is analyzed. Combining with the micro-defocusing projection, the improved Sierra dithering algorithm is proposed using these quentially scanning to reduce binarization of sinusoidal grating quantization error and inhibition of asymmetric texture, this method can greatly improve the sinusoidality of the defocused fringe the pattern. The defocus grating is generated using the improved algorithm for three-dimension alprofile measurement technology, comparing with the Bayer ordered dithering algorithm, the Sierra dithering algorithm and the Floyd-steinberg error diffusion dithering algorithm, the experimental results show that the improved Sierra dithering algorithm has better adaptability, it can greatly reduce the phase error and faster calculation speed, accurate generated grating, and phase quality have then improved greatly, it is suitable for high precision three-dimensional profile measurement technology.
|
Received: 22 August 2018
Published: 08 June 2020
|
|
|
|
|
[1]吴乙万, 任志英, 高诚辉, 等. 超精密光学镜片三维表面形貌参数评定方法研究 [J]. 计量学报, 2017, 38(4): 410-415.
Wu Y W, Ren Z Y, Gao C H, et al. Study on 3D Surface Parameter Evaluation Method of Ultra Precision Optical Lenses [J]. Acta Metrologica Sinica, 2017, 38(4): 410-415.
[2]杨华晖, 刘福, 冯伟利. 基于EMD算法的光栅莫尔条纹信号去噪方法研究 [J]. 计量学报, 2016, 37(5): 467-471.
Yang H H, Liu F, Feng W L. Study of de-noising Based on EMD Algorithm in Grating Moiré Fringe Signal [J]. Acta Metrologica Sinica, 2016, 37(5): 467-471.
[3]高旭, 万秋华, 卢新然, 等. 光栅条纹光电信号正弦性偏差的自动补偿 [J]. 光学学报, 2013, 33(7): 187-192.
Gao X, Wan Q H, Lu X R, et al. Automatic Compensation of Sine Deviation for Grating Fringe Photoelectric Signal [J]. Acta Optica Sinica, 2013, 33(7): 187-192.
[4]高鹏, 李勇, 涂颜帅, 等. 离焦条纹投影三维测量中正弦光栅的二值化方法研究 [J]. 光子学报, 2014, 43(5): 162-168.
Gao P, Li Y, Tu Y S, et al. Binarization Methods of Sinusoidal Grating in 3D Measurement Base on Defocused Fringe Projection [J]. Acta Photonica Sinica, 2014, 43(5): 162-168.
[5]赵立伟, 达飞鹏, 郑东亮. 离焦投影三维测量的二值光栅生成方法 [J]. 光学学报, 2016, 36(8): 135-146.
Zhao L W, Da F P, Zheng D L. Method for Binary Grating Generation Using Defocused Projection for Three-Dimensional Measurement [J]. Acta Optica Sinica, 2016, 36(8): 135-146.
[6]李平平, 张启灿. 产生正弦光栅的二值化面积编码新方法 [J]. 光学与光电技术, 2011, 9(1): 36-41.
Li P P, Zhang Q C. New Method of Sinusoidal Grating Generation Based on Area Encoding [J]. Optics& Optoelectronic Technology, 2011, 9(1): 36-41.
[7]田紫霞, 陈文静, 苏显渝. 采用二元编码的正弦光栅提高PMP测量速度和精度的方法 [J]. 激光与光电子学进展, 2014, 51(12): 125-134.
Tian Z X, Chen W J, Su X Y. Method for Improving Accuracy and Measurement Speed of PMP Using Error Diffusion Binary Encoded Sinusoidal Grating [J]. Laser & Optoelectronics Progress, 2014, 51(12): 125-134.
[8]Ayubi G A, Ayubi J A, Di Martino J M, et al. Pulse-width Modulation in Defocused Three-dimensional Fringe Projection [J]. Optics Letters, 2010, 35(21): 3682-3684.
[9]Wang Y, Zhang S. Three-dimensional Shape Measurement with Binary Dithered Patterns [J]. Applied Optics, 2012, 51(27): 6631-6636.
[10]Dai J F, Zhang S. Phase-optimized Dithering Technique for High-quality 3D Shape Measurement [J]. Optics and Lasers in Engineering, 2013, 51(6): 790-795.
[11]Harm W, Roider C, Bernet S, et al. Tilt-effect of Holograms and Images Displayed on a Spatial Light Modulator [J]. Optics Express, 2015, 23(23): 30497-30511.
[12]Wang Y J, Laughner J I, Efimov I R, et al. 3D Absolute Shape Measurement of Live Rabbit Hearts with a Superfast Two-frequency Phase-shifting Technique [J]. Optics Express, 2013, 21(5): 5822-5832.
[13]Ghorayeb S R, Bracero L A, Blitz M J, et al. Quantitative Ultrasound Texture Analysis for Differentiating Preterm From Term Fetal Lungs. [J]. Journal of Ultrasound in Medicine, 2017, 36(7): 1437-1443.
[14]徐建亮, 周明安, 方晓汾. 一种两步相移任意步距相位轮廓测量技术研究 [J]. 计量学报, 2016, 37(5): 472-475.
Xu J L, Zhou M A, Fang X F, et al. Study on an Two Phase-shifting Profilometry with an Arbitrary Steps Algorithm [J]. Acta Metrologica Sinica, 2016, 37(5): 472-475.
[15]周明安, 徐建亮, 方晓汾. 基于改进测量系统的非定步距相位轮廓测量技术研究 [J]. 计量学报, 2016, 37(2): 128-132.
Zhou M A, Xu J L, Fang X F. Study on Undecided Steps Technique of the Improved Measurement System for Phase-shifting Profilometry [J]. Acta Metrologica Sinica, 2016, 37(2): 128-132.
[16]唐苏明. 三维曲面测量的编码结构光技术研究[D]. 上海:上海大学, 2015.
[17]李宗楠, 朱丹, 佟新鑫. 散焦投影三维测量中一种改进的误差扩散核 [J]. 光电工程, 2016, 43(12): 34-39.
Li Z N, ZhuD, Tong X X. An Improved Error-diffusion Algorithm for Projector Defocusing Profilometry [J]. Opto-Electronic Engineering, 2016, 43(12): 34-39.
[18]吕江昭. 基于离焦光栅投影的快速三维测量若干关键技术研究[D]. 南京:东南大学, 2015. |
|
|
|