中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共6条，第1-6条

帮助

条数/页：排序方式：
	An Instrument With Constant Volume Approach for In Situ Measurement of Surface Runoff and Suspended Sediment Concentration 期刊论文 OAI收割 WATER RESOURCES RESEARCH, 2021, 卷号: 57, 期号: 2, 页码: 10 作者: Zhan, Xiaoyun; Zhao, Jun; Zhu-Barker, Xia; Shui, Junfeng; Liu, Baoyuan \| 收藏 \| 浏览/下载：24/0 \| 提交时间：2021/04/25 automated instrument constant volume in situ measurement runoff sediment concentration sediment transport
	SIFSpec: Measuring Solar-Induced Chlorophyll Fluorescence Observations for Remote Sensing of Photosynthesis 期刊论文 OAI收割 SENSORS, 2019, 卷号: 19, 期号: 13, 页码: 21 作者: Du, Shanshan; Liu, Liangyun; Liu, Xinjie; Guo, Jian; Hu, Jiaochan \| 收藏 \| 浏览/下载：90/0 \| 提交时间：2019/09/24 solar-induced chlorophyll fluorescence (SIF) gross primary production (GPP) automated in situ measurement system
	恒星光谱的自动识别与分类方法研究学位论文 OAI收割工学博士, 中国科学院自动化研究所: 中国科学院研究生院, 2006 作者: 刘中田收藏 \| 浏览/下载：94/0 \| 提交时间：2015/09/02 天体光谱自动分类红移测量小波变换离散傅里叶变换卷积型小波包变换多尺度特征匹配 Celestial object spectra automated classification redshifts measurement wavelet transform discrete fourier transform convolution type of wavelet packet transform multi-scaling feature matching
	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：27/0 \| 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.
	天体光谱的自动分类与自动测量技术学位论文 OAI收割工学博士, 中国科学院自动化研究所: 中国科学院研究生院, 2005 作者: 许馨收藏 \| 浏览/下载：93/0 \| 提交时间：2015/09/02 天体光谱自动分类红移测量局部PCA 核方法概率神经网络流形学习 Celestial object spectra automated classification redshifts measurement
	An automated measurement of the galaxies spectra of LAMOST 期刊论文 OAI收割 SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 卷号: 25, 期号: 6, 页码: 1002-1005 作者: Zhu, GH; Luo, AL; Zhao, YH 收藏 \| 浏览/下载：26/0 \| 提交时间：2017/03/13 LAMOST galaxy spectra redshift automated measurement PCAZ