中国科学院机构知识库网格系统: 检索

Accelerated LiDAR data processing algorithm for self-driving cars on the heterogeneous computing platform 期刊论文 OAI收割
IET COMPUTERS AND DIGITAL TECHNIQUES, 2020, 卷号: 14, 期号: 5, 页码: 201-209
作者: Li, Wei; Liang, Jun; Zhang, Yunquan; Jia, Haipeng; Xiao, Lin

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收藏 | 浏览/下载：57/0 | 提交时间：2020/12/10

feature extraction optical radar optimisation optical information processing traffic engineering computing mobile robots automobiles accelerated LiDAR data processing algorithm self-driving cars heterogeneous computing platform optimisation NVIDIA Tegra X2 computing platform feature extraction obstacle clustering

Real-Time Vision through Haze Based on Polarization Imaging 期刊论文 OAI收割
Applied Sciences-Basel, 2019, 卷号: 9, 期号: 1, 页码: 14
作者: X.H.Wang; J.H.Ouyang; Y.Wei; F.Liu; G.Zhang

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收藏 | 浏览/下载：67/0 | 提交时间：2020/08/24

real-time observation,optical sensing,stokes vectors,information,processing technology,pollution,imager,sensor,Chemistry,Engineering,Materials Science,Physics

Free-space Coherent Optical Communication System Using Irradiance Modulation with Dynamic Detection Threshold 期刊论文 OAI收割
Faguang Xuebao/Chinese Journal of Luminescence, 2019, 卷号: 40, 期号: 9, 页码: 1200-1206
作者: X.Sun; L.Li

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收藏 | 浏览/下载：34/0 | 提交时间：2020/08/24

Modulation,Bit error rate,Channel state information,Optical communication,Optical signal processing,Probability density function,Signal detection,Signal to noise ratio,Turbulence models

Performance bound of position estimation in image matching 会议论文 OAI收割
2011 International Conference on Advanced Materials in Microwaves and Optics, AMMO2011, Bangkok, Thailand, September 30 - October 1, 2011
作者: Xu BS(徐保树); Shi ZL(史泽林)

收藏 | 浏览/下载：17/0 | 提交时间：2012/12/28

Cramer-Rao bounds Estimation Fisher information matrix Image processing Optical data processing Parameter estimation

3D Road information extraction from LiDAR data fused with aerial-images 会议论文 OAI收割
2011 IEEE International Conference on Spatial Data Mining and Geographical Knowledge Services, ICSDM 2011 - In Conjunction with 8th Beijing International Workshop on Geographical Information Science, BJ-IWGIS 2011, Fuzhou, China, June 29, 2011 - July 1,2011
Wang, Guofeng; Zhang, Yunling; Li, Jiancheng; Song, Pengfei

收藏 | 浏览/下载：20/0 | 提交时间：2014/12/07

Data mining Content based retrieval Geographic information systems Image processing Optical radar Roads and streets Three dimensional Three dimensional computer graphics

Dynamic closed-loop test for real-time drift angle adjustment of space camera on the Earth (EI CONFERENCE) 会议论文 OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China
作者: Xu S.; Wang D.

收藏 | 浏览/下载：36/0 | 提交时间：2013/03/25

In order to eliminate the influence of aircraft attitude angle to the image quality of space camera and assure that the drift angle of space camera could be accurately adjusted at the orbit a novel closed-loop test method is provided for real-time drift angle adjustment of space camera on the Earth. A long focal length dynamic aim generator is applied to simulate the image motion and the variety drift angle and to detect the precision of the image motion compensation machinery and the capability of the drift angle control system. The computer system is used to control the dynamic aim generator accomplish the data processing transmit and receive the data information. The seamless connection and the data transmission between the aim generator and the aircraft simulation devices are constituted. The command parameter and drift angle data transmitted by the simulation devices are received by the space camera at the real time then the photos are taken and the draft angle is adjusted simultaneously. It is shown that the drift angle can be accurately tracked by the space camera at the real time and the detective method satisfies the test requirement. 2010 Copyright SPIE - The International Society for Optical Engineering.

Level 0 and level 1 data processing for a type of hyper-spectral imager (EI CONFERENCE) 会议论文 OAI收割
2009 International Conference on Optical Instruments and Technology, OIT 2009, October 19, 2009 - October 21, 2009, Shanghai, China
Li X.; Yan C.

收藏 | 浏览/下载：74/0 | 提交时间：2013/03/25

Hyper-spectral imaging (HSI) is a kind of optical remote sensor that can simultaneously obtain spatial and spectral information of ground targets. We are now designing a data processing system for a type of space-borne push-broom HSI then it performs radiometric and spectral calibration based on the ground calibration results and onboard calibration collection. The detailed algorithms for bad pixel replacement which has 128 spectral channels covering the spectral range from 400nm to 2500nm. With its large amount of spectral channels radiometric and spectral calibration were presented. After processing the HSI collects large volume of spectral imaging data need to be efficiently and accurately processed and calibrated. In this paper the digital numbers downlinked from the spacecraft can be converted into at-sensor absolute spectral radiance of ground targets the detailed Level 0 and Level 1 data processing steps for the HSI were presented. The Level 0 processing refers to a set of tasks performed on the data downlinked from the spacecraft thus providing accurate quantified spectral imaging data for various applications. 2009 SPIE. including decoding to extract science data separating the science data into files corresponding to different tasks (e.g. ground imaging dark imaging and onboard calibration) checking data integrity and instrument settings data format conversion and Level 0 files creation. The Level 1 processing performs several steps on Level 0 data. Firstly it corrects the image artifacts (mostly the SWIR smear effect) subtracts the dark background and performs the bad pixel replacement according to the prelaunch measurement

Estimating forest biomass with GLAS samples and MODIS imagery in Northeastern China 会议论文 OAI收割
MIPPR 2009 - Remote Sensing and GIS Data Processing and Other Applications: 6th International Symposium on Multispectral Image Processing and Pattern Recognition, Yichang, China, October 30, 2009 - November 1,2009
Fu, Anmin; Sun, Guoqing; Guo, Zhifeng

收藏 | 浏览/下载：28/0 | 提交时间：2014/12/07

Satellite imagery Agriculture Aneroid altimeters Atmospherics Biomass Biometrics Data processing Deforestation Ecosystems Geographic information systems Image processing Infrared devices Optical radar Radio altimeters Radiometers Reforestation Regression analysis Remote sensing Satellite ground stations Spectrometers Three dimensional Timber Vegetation

Design of high-resolution fourier transform lens (EI CONFERENCE) 会议论文 OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies, AOMATT 2007: Advanced Optical Manufacturing Technologies, July 8, 2007 - July 12, 2007, Chengdu, China
作者: Zhang L.; Zhang L.

收藏 | 浏览/下载：25/0 | 提交时间：2013/03/25

With the development of optical information processing high-resolution Fourier transform lens has often been used in holographic data storage system spatial filtering and observation of particles. This paper studies the optical design method of high-resolution Fourier transform optical lenses system which could be used in particles observation and holographic data storage system. According to Fourier transform relation between object and its frequency plane and the theory of geometrical optics the system with working wavelength 532nm and resolution 3 m was designed based on ZEMAX. A multi-configuration method was adopted to optimize the system's lenses. In the optical system a diaphragm was placed at the system's spectrum plane and the system demanded a low vacuum to cut down the influences of atmosphere and other particles. The result of finite element analysis indicated that the influences of vacuum pumping to optics spacing and mirror surface shape very minor and the imaging quality not being affected. This system has many advantages such as simple structure good image quality and a high resolution of 3 m. So it has a wide application prospect and can be used both in holographic data storage system and particles observation.

cluster analysis and optimization in color-based clustering for image abstract 会议论文 OAI收割
17th IEEE International Conference on Data Mining Workshops, ICDM Workshops 2007, Omaha, NE, United states, 40844
He Jing; Huang Guangyan; Zhang Yanchun; Shi Yong

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收藏 | 浏览/下载：13/0 | 提交时间：2011/06/29

Abstracting Administrative data processing Chlorine compounds Clustering algorithms Color Data mining Decision support systems Flow of solids Information management Knowledge management Mining Optical properties Optimization Ran