太赫兹成像质量提升方法

发布时间：2018-06-15 18:05

本文选题：太赫兹成像 + 增强　；参考：《红外与激光工程》2017年11期

【摘要】：太赫兹成像是空间光学遥感成像领域的新方向,然而太赫兹成像分辨率受到器件加工和制造工艺水平限制。为了提高太赫兹成像的图像分辨率,提出一种改善太赫兹过采样成像的图像处理方法。首先,对响应在太赫兹谱段的目标进行错位观测形成多路观测结果;然后,对多路观测的太赫兹图像进行范数优化约束和增强滤波;最后,将经过范数优化约束和滤波增强后的多路太赫兹图像重构成一幅分辨率更高的图像。实验证明:这种方法能够在抑制背景噪声的同时,有效提高目标边缘连续性。从图像质量评价指标上看,所提方法相较于传统方法能提升图像的有效细节信息,进而增强图像质量。
[Abstract]:Terahertz imaging is a new direction in the field of space optical remote sensing imaging. However, the resolution of terahertz imaging is limited by the level of device processing and manufacturing technology. In order to improve the resolution of terahertz imaging, an image processing method is proposed to improve terahertz oversampling imaging. First, the target in response to the terahertz spectrum is staggered to form a multi-channel observation result; then, norm optimization constraints and enhanced filtering are performed on the terahertz image. The multichannel terahertz image with norm optimization constraint and enhanced filtering is reconstituted into a higher resolution image. Experiments show that this method can effectively improve the continuity of target edge while suppressing background noise. From the point of view of image quality evaluation index, compared with the traditional method, the proposed method can improve the effective details of the image, and then enhance the image quality.
【作者单位】：北京空间机电研究所;南京理工大学计算机科学与技术学院;中国科学院上海应用物理研究所;
【基金】：国防科技基金(0310151)
【分类号】：TP751

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