基于数字微镜成像系统的像素级映射方法 
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Pixel-Level Mapping Method Based on Digital Micromirror Imaging System
天津大学精密测试技术及仪器国家重点实验室, 天津 300072
图 & 表
图 1. 系统光路图
Fig. 1. Light path of the system
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图 2. BP算法流程图
Fig. 2. Flow chart of BP algorithm
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图 3. 标定图片。(a) DMD上载图片; (b) CCD接收图像
Fig. 3. Calibration images. (a) DMD upload image; (b) image received by CCD
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图 4. 误差标定检测图片。(a) DMD上载图片; (b) CCD接收图像
Fig. 4. Error calibration test images. (a) DMD upload image; (b) image received by CCD
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表 1DLT算法误差
Table1. Error of DLT algorithm
| No. | x | y | x' | y' | |x-x'| | |y-y'| | |
|---|
| 1 | 720 | 641 | 721.3 | 643.0 | 1.3 | 2.0 | 2.3854 | | 2 | 630 | 801 | 631.2 | 803.4 | 1.2 | 2.4 | 2.6833 | | 3 | 585 | 881 | 586.1 | 884.1 | 1.1 | 3.1 | 3.2894 | | 4 | 496 | 881 | 498.1 | 884.3 | 2.1 | 3.3 | 3.9115 | | 5 | 585 | 1040 | 585.9 | 1042.6 | 0.9 | 2.6 | 2.7514 | | 6 | 630 | 1120 | 631.7 | 1123.3 | 1.7 | 3.3 | 3.7121 | | 7 | 451 | 1120 | 453.8 | 1122.6 | 2.8 | 2.6 | 3.8210 | | 8 | 361 | 1280 | 363.6 | 1283.0 | 2.6 | 3.0 | 3.9699 | | 9 | 271 | 1440 | 273.5 | 1442.5 | 2.5 | 2.5 | 3.5355 | | θ | 1.8 | 2.7556 | 3.3399 |
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表 2多项式算法误差
Table2. Error of polynomial algorithm
| No. | x | y | x' | y' | |x-x'| | |y-y'| | |
|---|
| 1 | 720 | 641 | 719.5634 | 641.5 | 0.4366 | 0.5 | 0.6638 | | 2 | 630 | 801 | 630.0204 | 801.4 | 0.0204 | 0.4 | 0.4005 | | 3 | 585 | 881 | 585.0883 | 881.8 | 0.0883 | 0.8 | 0.8049 | | 4 | 496 | 881 | 497.5571 | 882.1 | 1.5571 | 1.1 | 1.9064 | | 5 | 585 | 1040 | 584.4102 | 1039.6 | 0.5898 | 0.4 | 0.7126 | | 6 | 630 | 1120 | 629.7063 | 1119.6 | 0.2937 | 0.4 | 0.4962 | | 7 | 451 | 1120 | 452.4780 | 1119.7 | 1.4780 | 0.3 | 1.5081 | | 8 | 361 | 1280 | 361.6559 | 1279.9 | 0.6559 | 0.1 | 0.6635 | | 9 | 271 | 1440 | 270.4040 | 1439.2 | 0.5960 | 0.8 | 0.9976 | | θ | 0.6351 | 0.5333 | 0.9060 |
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表 3神经网络BP算法误差
Table3. Error of neural network BP algorithm
| No. | x | y | x' | y' | |x-x'| | |y-y'| | |
|---|
| 1 | 864 | 713 | 863.0200 | 710.5751 | 0.9800 | 2.4249 | 2.6155 | | 2 | 879 | 525 | 874.3533 | 523.0070 | 4.6467 | 1.9930 | 5.0561 | | 3 | 951 | 665 | 948.8224 | 664.0306 | 2.1776 | 0.9694 | 2.3836 | | 4 | 958 | 572 | 954.3788 | 571.3168 | 3.6212 | 0.6832 | 3.6851 | | 5 | 1115 | 664 | 1113.1360 | 664.6202 | 1.8644 | 0.6202 | 1.9649 | | 6 | 1121 | 572 | 1118.9430 | 572.2007 | 2.0572 | 0.2007 | 2.0670 | | 7 | 1195 | 712 | 1192.2370 | 711.4545 | 2.7631 | 0.5455 | 2.8164 | | 8 | 1208 | 524 | 1204.2530 | 525.9572 | 3.7470 | 1.9572 | 4.2270 | | 9 | 1353 | 805 | 1352.9920 | 804.4541 | 0.0081 | 0.5459 | 0.5460 | | θ | 2.4295 | 1.1045 | 2.8180 |
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王惟婧, 张福民, 冯维, 曲兴华. 基于数字微镜成像系统的像素级映射方法[J]. 光学学报, 2017, 37(12): 1211001. Weijing Wang, Fumin Zhang, Wei Feng, Xinghua Qu. Pixel-Level Mapping Method Based on Digital Micromirror Imaging System[J]. Acta Optica Sinica, 2017, 37(12): 1211001.
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