固态微光实时偏振成像集成技术

梁宛玉; 许洁; 戴放; 常维静; 那启跃

doi:10.37188/CO.2020-0086

固态微光实时偏振成像集成技术

doi: 10.37188/CO.2020-0086

中国兵器工业第214研究所苏州研发中心，江苏苏州 215163

基金项目: 十三五装备预研项目（No. 31512060102-2）

详细信息

作者简介:
梁宛玉（1985—），女，河南南阳人，硕士，高级工程师，2011年于南京理工大学获得硕士学位，主要从事计算机软件与理论，学习模式识别、数字图像处理方面的研究。Email：wanyu-7018@163.com

许洁（1992—），女，江苏南通人，硕士，工程师，2017年于西安电子科技大学获得硕士学位，主要从事光电成像设计与图像处理方面研究工作。Email：xujieshangxian@163.com

中图分类号: TN223
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出版历程
- 收稿日期: 2020-05-08
- 修回日期: 2020-06-15
- 网络出版日期: 2021-04-28
- 刊出日期: 2021-05-14

Real-time polarization imaging integrated technology for solid-state low-light imaging

Suzhou R & D Center of the 214th Research Institute of NORINCO GROUP, Suzhou 215163, China

Funds: Supported by Equipment Preresearch Project of 13^th Five Year Plan (No. 31512060102-2)

More Information

Corresponding author: xujieshangxian@163.com

摘要

摘要: 高性能的微光夜视探测是光电探测未来的发展方向。本文针对在微弱光照射情况下，因为感光度不足而使得获得的偏振图像存在较大误差的问题，提出了一种固态微光实时偏振成像集成技术。通过引入白光通道和4个偏振方向的8个偏振通道，可在电子倍增CCD（EMCCD）微光器件上实现偏振和微光探测的集成。经试验验证，该技术获取的偏振信息准确度较高，且无偏振单元，使得器件的最低工作照度不被降低，器件同时具备微光-偏振探测功能，除可大幅提高探测器件对目标的探测识别能力外，还具有加工难度低、成本低等优点。
- EMCCD /
- 偏振 /
- 微光 /
- 阵列
Abstract: High-performance night vision light detection is the future direction of development in photoelectric detection. In this paper, a real-time polarization imaging technology for low-light imaging is proposed to solve issues where polarization images show large error due to low sensitivity. By introducing white light channels and 8 polarization channels in four polarization directions, the integration of polarization and detection can be achieved on EMCCD micro-optical devices. The experiment shows that the polarization information obtained by the polarization array is highly accurate, and also has advantages for its low difficulty in processing and its low cost.
- EMCCD /
- polarization /
- low light /
- array

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图 1 成像器件像元与偏振单元的集成示意图

Figure 1. Schematic diagram of integration between the imaging device pixel and polarization unit

下载: 全尺寸图片幻灯片

图 2 4个偏振方向的单元阵列设计

Figure 2. Array design in four polarization directions

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图 3 9个偏振方向的阵列设计

Figure 3. Array design in nine polarization directions

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图 4 4个偏振方向加无偏振单元的阵列设计

Figure 4. Array design with four polarization directions and non-polarization elements

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图 5 微光偏振成像系统

Figure 5. Low-light polarization imaging system

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图 6 12偏振态成像

Figure 6. 12-polarization images

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图 7 多偏振态图像偏振成像效果对比

Figure 7. Comparison of the polarization imaging effects of multi-polarization images

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图 8 4个偏振方向的单元阵列设计偏振度图像

Figure 8. Polarization degree image of array with four polarization directions

下载: 全尺寸图片幻灯片

图 9 4个偏振方向加无偏振单元的阵列设计偏振度图像

Figure 9. Polarization degree image of array with four polarization directions plus the non-polarized channel

下载: 全尺寸图片幻灯片

图 10 (a)靶标偏振图与(b)靶标原图

Figure 10. (a) Polarization diagram and (b) original diagram of the target

下载: 全尺寸图片幻灯片

表 1 多偏振态图像偏振对比

Table 1. Comparison of polarization for multi-polarization image

参数		最大值		均值		对比度		熵
参数		DoP	AoP	DoP	AoP	DoP	AoP	DoP	AoP
统计分析	3角度	0.557	0.272	0.477	0.010	3.41×10⁻⁵	0.011	3.372	2.203
	4角度	0.469	0.314	0.387	0.013	3.05×10⁻⁵	0.014	3.556	2.325
	6角度	0.360	0.402	0.273	0.005	2.63×10⁻⁵	0.013	3.579	2.473
	12角度	0.134	0.785	0.027	0.302	2.03×10⁻⁵	0.042	3.558	6.769
均匀取值	3角度	0.305	0.785	0.092	0.190	2.22×10⁻⁴	0.099	4.816	5.007
	4角度	0.330	0.785	0.131	0.137	1.97×10⁻⁴	0.114	5.207	3.799
	6角度	0.269	0.785	0.057	0.235	1.22×10⁻⁴	0.095	4.538	6.253
	12角度	0.134	0.785	0.027	0.302	2.04×10⁻⁵	0.042	3.558	6.769

下载: 导出CSV

表 2 偏振图与原图的对比度与清晰度比较

Table 2. Comparison of contrast and clarity between the polarization image and the original image

	原图	偏振图
对比度	0.19711	0.36039
清晰度	0.0091316	0.019933

下载: 导出CSV

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