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场景自适应的红外焦平面成像动态范围调整技术

Scene-based dynamic range adaptive adjust technology of infrared focal plane array

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摘要

针对红外焦平面对辐射强度较大的目标输出动态范围不足的问题,提出了一种场景自适应的红外焦平面成像动态范围调整技术。包括3个方面的内容:从图像中提取目标灰度特征,获取动态范围自适应依据;结合最小均方自适应滤波算法,对调整依据进行滤波预测后给出调节值;把灰度调节值转换成电平值,利用电平值设置红外焦平面偏置电压完成焦平面成像动态范围自适应。最后,对整体方案进行了实验验证。通过在红外焦平面成像系统中实验证明了基于场景成像动态范围自适应方法的可行性,并获得了很好的效果,成像质量有明显提高。

Abstract

Using the IR imaging system to observe the target, especially strong thermal radiation target, dynamic range is not enough. In this paper, a dynamic range adjust technology based on self-adaptive to scene characteristic is proposed. This paper describes a method of imaging super-resolution by adjusting the ranges of imaging signals on infrared focal plane array in details. This method includes three steps. The first step is to extract the gray characteristic of the scene needed observing, analyze the gray characteristic of the target, and get the adjust witness for dynamic range adjusting. The second step is to combine with the adaptive filtering algorithm based on LMS, and give the adjusting parameters after filtering on adjust witness. The third step is to complete the dynamic range adaptive adjust on imaging of infrared focal plane array imaging system by using electrical level value to adjust bias voltage.The total scheme is validated in many experiments using the infrared focal plane array imaging system developed by ourselves. The feasibility of this method is proved during experiments and the quality of imaging is improved evidently.

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中图分类号:TN219

DOI:10.3788/hplpb201426.031002

所属栏目:高功率激光与光学

基金项目:“十二五”国家支撑计划项目(2011BAD21B03)

收稿日期:2013-07-04

修改稿日期:2013-10-29

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贺明:信息工程大学 电子技术学院, 郑州 450052防空兵学院, 郑州 450052上海蓝剑科技发展有限公司, 上海 201821
王亚弟:信息工程大学 电子技术学院, 郑州 450052
王新赛:防空兵学院, 郑州 450052上海蓝剑科技发展有限公司, 上海 201821
张成斌:防空兵学院, 郑州 450052
张天一:防空兵学院, 郑州 450052
路建方:信息工程大学 电子技术学院, 郑州 450052
孙雨宸:上海蓝剑科技发展有限公司, 上海 201821

联系人作者:贺明(ming8797@gmail.com)

备注:贺明(1981—),男,博士生,讲师,主要研究方向是红外成像与识别系统研究工作

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引用该论文

He Ming,Wang Yadi,Wang Xinsai,Zhang Chengbin,Zhang Tianyi,Lu Jianfang,Sun Yuchen. Scene-based dynamic range adaptive adjust technology of infrared focal plane array[J]. High Power Laser and Particle Beams, 2014, 26(3): 031002

贺明,王亚弟,王新赛,张成斌,张天一,路建方,孙雨宸. 场景自适应的红外焦平面成像动态范围调整技术[J]. 强激光与粒子束, 2014, 26(3): 031002

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