机构

• 西安光学精密机械研究... [2]
• 软件研究所 [2]
• 长春光学精密机械与物... [1]

采集方式

• OAI收割 [5]

内容类型

• 会议论文 [3]
• 学位论文 [2]

发表日期

• 2024 [1]
• 2013 [1]
• 2006 [3]

学科主题

• 机械、仪表::各种光... [1]
• 电子、通信与自动控制... [1]

筛选

浏览/检索结果: 共5条，第1-5条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序作者升序作者降序 制冷型红外探测器图像预处理与MRTD测试算法研究 学位论文  OAI收割 北京: 中国科学院大学, 2024 作者:  季然   |  收藏  |  浏览/下载：21/0  |  提交时间：2024/06/21 制冷型红外探测器  非均匀性校正  盲元补偿  MRTD测试  深度学习   靶场成像光谱设备作用距离研究 学位论文  OAI收割 硕士, 北京: 中国科学院研究生院, 2013 张新杰 收藏  |  浏览/下载：60/0  |  提交时间：2013/06/08 光谱  光谱成像技术  作用距离  大气  NETD  MRTD   Intelligent MRTD testing for thermal imaging system using ANN (EI CONFERENCE) 会议论文  OAI收割 ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China Sun J.; Ma D. 收藏  |  浏览/下载：30/0  |  提交时间：2013/03/25 The Minimum Resolvable Temperature Difference (MRTD) is the most widely accepted figure for describing the performance of a thermal imaging system. Many models have been proposed to predict it. The MRTD testing is a psychophysical task  for which biases are unavoidable. It requires laboratory conditions such as normal air condition and a constant temperature. It also needs expensive measuring equipments and takes a considerable period of time. Especially when measuring imagers of the same type  the test is time consuming. So an automated and intelligent measurement method should be discussed. This paper adopts the concept of automated MRTD testing using boundary contour system and fuzzy ARTMAP  but uses different methods. It describes an Automated MRTD Testing procedure basing on Back-Propagation Network. Firstly  we use frame grabber to capture the 4-bar target image data. Then according to image gray scale  we segment the image to get 4-bar place and extract feature vector representing the image characteristic and human detection ability. These feature sets  along with known target visibility  are used to train the ANN (Artificial Neural Networks). Actually it is a nonlinear classification (of input dimensions) of the image series using ANN. Our task is to justify if image is resolvable or uncertainty. Then the trained ANN will emulate observer performance in determining MRTD. This method can reduce the uncertainties between observers and long time dependent factors by standardization. This paper will introduce the feature extraction algorithm  demonstrate the feasibility of the whole process and give the accuracy of MRTD measurement.   identity-based pki scheme for machine readable travel document 会议论文  OAI收割 20th International Conference on Advanced Information Networking and Applications, Vienna, AUSTRIA, APR 18-20, Zhang Fan; Feng Deng-Guo   |  收藏  |  浏览/下载：23/0  |  提交时间：2011/07/28 identity-based signature  PKI  MRTD  PKD  DSI  DSPK   identity-based pki scheme for machine readable travel document 会议论文  OAI收割 20th International Conference on Advanced Information Networking and Applications, Vienna, AUSTRIA, APR 18-20, Zhang Fan; Feng Deng-Guo   |  收藏  |  浏览/下载：19/0  |  提交时间：2011/07/28 identity-based signature  PKI  MRTD  PKD  DSI  DSPK