轻型飞机成像光谱图象几何校正技术研究

成像光谱测量技术是近年来遥感领域的发展前沿之一，该技术以高光谱分辩率、高空间分辩率、高时相分辨率及普像合一为主要特征，在国民经济各个领域得到广泛应用。在剖析轻型飞机成像光谱测量系统成像环境特征的基础上，深入研究了低空遥感图象几何学理论，并利用数学模型分析方法，建立了航空成像光谱图象几何畸变模式及几何校正模型；提出了适合本系统的几何处理流程。利用所建立的几何校正模型和软件，对机载可见光/短波红外成像光谱数据进行了几何特性分析及几何校正，取得较好的图象处理效果，并证实了系统的实用性。     

高密度PLD在图象传感器驱动电路中的应用

介绍了使用高密度可编程逻辑器件完成图象传感器驱动电路的设计。该设计的电路板比通常的驱动电路板面积小、可靠性高、逻辑关系修改方便。     

光电子成像电子能谱仪新一代DLD(延迟线检测器)系统

介绍新型X射线激发光电子成像电子能谱仪配置新一代DLD光电子检测系统优点、结构和在能谱和成像应用方面特点。     

开展SPECT影像MonteCarlo模拟和高性能低价格SPECT的研制

在ＳＰＥＣＴ的硬件和软件研制中，ＭｏｎｔＣａｒｌｏ模拟是重要的手段，我们正在研制高性能低价格的ＳＰＥＣＴ，本文介绍这个领域研究工作。     

Air entrainment on a moving continuous web

The air boundary layer on a moving continuous web was experimentally investigated in a laboratory coating equipment. The boundary layer thickness was obtained by smoke visualization and measured by image analysis in the range 2.4×10⁴<Re<3×10⁵. According to the web speed, three laminar flow mechanisms were observed, for which the air boundary layer thickness was found to vary from 0.74 to . A survey of the published boundary layer solutions for a moving flat surface was also carried out and their applicability to the present boundary layer problem was studied. It was shown that the Blasius solution is the most suitable to represent the air flow in the case of a moving web.     

A test device for isotopic γ-ray imaging with CdZnTe detector

A test device for isotopic γ-ray imaging, which consists of an isotope γ-ray source, a CdZnTe γ-ray spectrometer and other auxiliary equipment, is studied here. Compared with the conventional X-ray, the isotope γ-ray,which is utilized in this project, has its own advantages in imaging. Furthermore, with a room-temperature high-energy-resolution CdZnTe detector and a modern imaging processing technique, this device is capable of effectively suppressing the background and gaining more information, thus it can obtain a better image than conventional X-ray devices. In the experiment of PCB imaging, all soldered points and chip components are sharply demonstrated.     

太赫兹成像系统控制软件设计

设计并实现了一套基于热释电面阵探测器的太赫兹成像软件。该软件基于VC．NET的强大功能，通过对Active控件接口的二次开发和数字图像处理技术，完成了太赫兹图像的采集、处理、显示、更替和被测物品的机械位移控制。该软件在连续太赫兹实时成像系统中运行良好。     

印制板图形转移工艺技术及品质控制

本文对印制板干膜图形转移制作进行了简单介绍，对该制程的工艺过程和品质控制进行了较为详细的论述。     

Design and Fabrication of Faceted Mirror Arrays for Light Field Capture

The high resolution of digital cameras has made single‐shot, single‐sensor acquisition of light fields feasible, though considerable design effort is still necessary in order to construct the necessary collection of optical elements for particular acquisition scenarios. This paper explores a pipeline for designing, fabricating and utilizing faceted mirror arrays which simplifies this task. The foundation of the pipeline is an interactive tool that automatically optimizes for mirror designs while exposing to the user a set of intuitive parameters for light field quality and manufacturing constraints. We investigate two manufacturing processes for automatic fabrication of the resulting designs: one is based on CNC milling, polishing, and plating of one solid work piece, while the other involves assembly of CNC‐cut mirror facets. We demonstrate results for refocusing in a macro photography scenario. In addition, we observe that traditional photographic parameters take novel roles in the faceted mirror array setup and discuss their influence.     

Automatic freshness assessment of cod (Gadus morhua) fillets by Vis/Nir spectroscopy

VIS/NIR spectroscopy for differentiating between fresh and frozen-thawed cod fillets and for assessing the freshness as days on ice has been evaluated. Both a handheld interactance probe for doing quick measurements of single fillets and an imaging spectrometer for doing online analysis at industrial speed of one fillet per second, have been used. Results show that frozen-thawed cod fillets can be fully separated from fresh fillets using a small subset of wavelengths in the visible region. Freshness as days on ice can be determined with an accuracy of 1.6 days on individual fillets. The results indicate that oxidation of hemoglobin and myoglobin during freezing-thawing and cold storage on ice are explaining most of the variations seen in the visible region of the spectrum.