激光与光电子学进展, 2019, 56 (4): 041102, 网络出版: 2019-07-31
基于结构光多频相移法的煤块表面形貌测量 下载: 986次
Surface Profile Measurement of Coal Based on Structured Light Multifrequency Phase-Shifting Technique
图 & 表
图 2. 平滑表面煤块。(a)条纹图;(b)背景强度;(c)煤块和阴影二值图像;(d)有效测量区域二值图像
Fig. 2. Coal with smooth surface. (a) Fringe pattern; (b) background intensity; (c) binary image of coal and shadow; (d) binary image of valid measurement area
图 3. 2种相位类型的平滑表面煤块相位点分布的二值图像。(a)第一类;(b) 第二类
Fig. 3. Binary images of phase point distribution for two phase types of coal with smooth surface. (a) First type; (b) second type
图 4. 平滑表面煤块的相位分布。(a)校正前的第一类相位点;(b)校正后的第一类相位点; (c)校正前的第二类相位点;(d)校正后的第二类相位点
Fig. 4. Phase distributions of coal with smooth surface. (a) First type of phase points before correction; (b) first type of phase points after correction; (c) second type of phase points before correction; (d) second type of phase points after correction
图 5. 平滑表面煤块校正后的相位分布
Fig. 5. Phase distribution of coal with smooth surface after correction
图 6. 非平滑表面煤块。(a)条纹图;(b)背景强度;(c)有效测量区域的二值图像
Fig. 6. Coal with non-smooth surface. (a) Fringe pattern; (b) background intensity; (c) binary image of valid measurement area
图 7. 2种相位类型的非平滑表面煤块相位点分布二值图像。(a)第一类;(b)第二类
Fig. 7. Binary images of phase point distributions of two phase types of coal with non-smooth surface. (a) First type; (b) second type
图 8. 非平滑表面煤块校正后的相位分布。(a)第一类相位点;(b)第二类相位点
Fig. 8. Phase distributions of coal with non-smooth surface after correction. (a) First type of phase points; (b) second type of phase points
图 9. 经不同算法校正后非平滑表面煤块的相位分布。(a)本文所提算法;(b)文献[ 15]算法;(c)文献[ 16]算法;(d)文献[ 17]算法
Fig. 9. Phase distributions of coal with non-smooth surface after correction by different methods. (a) Proposed method; (b) method in Ref. [15]; (c) method in Ref. [16]; (d) method in Ref. [17]
图 10. 煤渣。(a)背景强度;(b)有效测量区域内校正后的相位分布
Fig. 10. Cinder. (a) Background intensity; (b) phase distribution in valid measurement area after correction
图 11. 煤块点云。(a)光滑表面;(b)非光滑表面
Fig. 11. Point cloud of coal. (a) Smooth surface; (b) non-smooth surface
表 1相位点数量分布
Table1. Distributions of phase points
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表 2不同算法的运行时间
Table2. Running time for different algorithmss
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吴庆尉, 范海东, 关键, 吴迎春, 吴学成. 基于结构光多频相移法的煤块表面形貌测量[J]. 激光与光电子学进展, 2019, 56(4): 041102. Qingwei Wu, Haidong Fan, Jian Guan, Yingchun Wu, Xuecheng Wu. Surface Profile Measurement of Coal Based on Structured Light Multifrequency Phase-Shifting Technique[J]. Laser & Optoelectronics Progress, 2019, 56(4): 041102.