中国激光, 2019, 46 (10): 1004003, 网络出版: 2019-10-25
基于离散粒子群抖动优化的高质量三维形貌测量 
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High-Quality Three-Dimensional Shape Measurement Based on Binary Particle Swarm Dithering Optimization
图 & 表
图 3. 不同高斯滤波函数模板大小下的仿真结果。(a) 5×5;(b) 9×9;(c) 13×13
Fig. 3. Simulation results for different Gaussian filter sizes. (a) 5×5; (b) 9×9; (c) 13×13
图 4. 两种方法产生的图案对比。(a) Floyd-Steinberg误差扩散抖动方法产生的二值图案;(b) Floyd-Steinberg误差扩散抖动方法所得图案经过高斯滤波后的图案;(c)所提方法产生的二值图案;(d)所提方法所得图案经高斯滤波后的图案
Fig. 4. Patterns generated by two methods. (a) Binary pattern obtained by Floyd-Steinberg error-diffusion dithering method; (b) binary pattern obtained by Floyd-Steinberg error-diffusion dithering method and Gaussian filter; (c) binary pattern obtained by proposed method; (d) binary pattern obtained by proposed method and Gaussian filter
图 5. Floyd-Steinberg误差扩散抖动方法和所提方法结果对比比较。(a)(d)(g)理想正弦曲线、误差扩散抖动算法和所提方法分别经过模板大小为5×5、9×9和13×13的高斯滤波函数滤波后的截面图比较;(b)(e)(h)误差扩散抖动算法和所提方法分别经过模板大小为5×5、9×9和13×13的高斯滤波函数滤波后的灰度值误差曲线;(c)(f)(i)误差扩散抖动算法和所提方法分别经过模板大小为5×5、9×9和13×13的高斯滤波函数滤波后的相位误差曲线
Fig. 5. Comparison between Floyd-Steinberg error-diffusion dithering method and proposed method. (a)(d)(g)Cross-sections of ideal sinusoidal pattern and two binary patterns obtained by error-diffusion dithering method and the proposed method after applying Gaussian filter with sizes of 5×5, 9×9, and 13×13,respectively; (b)(e)(h) gray value differences of error-diffusion dithering method and the proposed method after applying Gaussian filter with sizes of 5×5, 9×9, and 13×13, respectively; (c)(f)(i) phas
图 7. 不同离焦程度下的测量结果。(a)轻度离焦;(b)中度离焦;(c)重度离焦
Fig. 7. Measurement results under different defocusing amounts. (a) Mild defocusing; (b) moderate defocusing; (c) severe defocusing
图 8. 两种方法的离焦图案。(a)误差扩散抖动方法;(b)所提方法
Fig. 8. Defocusing patterns by two methods. (a) Error-diffusion dithering method; (b) proposed method
图 9. 复杂物体的三维测量结果。(a)(c)(e)误差扩散抖动算法经过轻度离焦、中度离焦和重度离焦的结果;(b)(d)(f)所提方法经过轻度离焦、中度离焦和重度离焦的结果
Fig. 9. 3D measurement results of complex object. (a)(c)(e) Results of error-diffusion dithering method using mild defocusing, moderate defocusing, and severe defocusing, respectively; (b)(d)(f) results of proposed method using mild defocusing, moderate defocusing, and severe defocusing, respectively
表 1两种方法在不同离焦程度的投影仪下的相位RMS误差
Table1. Phase RMS errors of two methods under different defocusing amounts
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蔡宁, 陈浙泊, 林斌, 曹向群. 基于离散粒子群抖动优化的高质量三维形貌测量[J]. 中国激光, 2019, 46(10): 1004003. Ning Cai, Zhebo Chen, Bin Lin, Xiangqun Cao. High-Quality Three-Dimensional Shape Measurement Based on Binary Particle Swarm Dithering Optimization[J]. Chinese Journal of Lasers, 2019, 46(10): 1004003.
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