中国科学院机构知识库网格系统: 检索

Infrared stripe correction algorithm based on wavelet decomposition and total variation-guided filtering 期刊论文 OAI收割
JOURNAL OF THE EUROPEAN OPTICAL SOCIETY-RAPID PUBLICATIONS, 2020, 卷号: 16, 期号: 1, 页码: 1-12
作者: Wang ED(王恩德); Jiang P(姜平); Li XP(李学鹏); Cao H(曹晖)

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收藏 | 浏览/下载：24/0 | 提交时间：2020/01/11

Focal-plane array non-uniformity correction Infrared image Multi-scale Destriping

Infrared Stripe Correction Algorithm Based on Wavelet Analysis and Gradient Equalization 期刊论文 OAI收割
APPLIED SCIENCES-BASEL, 2019, 卷号: 9, 期号: 10, 页码: 1-21
作者: Peng LY(彭良玉); Zhu YL(朱亚龙); Hou XK(侯续奎); Jiang P(姜平); Wang ED(王恩德)

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收藏 | 浏览/下载：74/0 | 提交时间：2019/08/04

non-uniformity correction focal-plane array infrared image destriping

Infrared stripe noise correction algorithm based on multi-scale analysis and one-dimensional vector convolution 会议论文 OAI收割
Shanghai, China, December 20-23, 2019
作者: Jiang P(姜平); Wang ED(王恩德); Feng DQ(冯达其)

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收藏 | 浏览/下载：24/0 | 提交时间：2020/03/22

Non-uniformity correction focal-plane array infrared image Multi-scale destriping

A Wide Dynamic Range NUC Algorithm for IRCS Systems 期刊论文 OAI收割
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 2018, 卷号: 73, 期号: 12, 页码: 1821-1826
作者: Li, Zhou; Chang, Song-Tao; He, Feng-Yun; Cai, Li-Hua

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收藏 | 浏览/下载：44/0 | 提交时间：2019/05/22

Wide dynamic range Non-uniformity correction Infrared radiation Cooling infrared focal plane array

Design and Study of Middle Infrared Spectrum System with Variational Field of View 期刊论文 OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 卷号: 34, 期号: 8, 页码: 2293-2297
作者: Bai Yu; Xing Ting-wen; Jiang Ya-dong; Feng Cheng

收藏 | 浏览/下载：16/0 | 提交时间：2015/07/10

Infrared spectrum Large focal plane array Variational field of view

Precision detection of CCD splicing based on template matching algorithm (EI CONFERENCE) 会议论文 OAI收割
IEEE 2nd International Conference on Computing, Control and Industrial Engineering, CCIE 2011, August 20, 2011 - August 21, 2011, Wuhan, China
作者: Zhang X.; Zhang X.; Yang L.; Zhang X.; Yang L.

收藏 | 浏览/下载：30/0 | 提交时间：2013/03/25

The remote sensing camera in large field and wide cover needs CCD with enough pixels. But the existing CCD cannot satisfy the practical needs. Therefore several pieces of CCD which has insufficient pixels are spliced to get a long CCD array with plenty of pixels. The precision requirements of CCD splicing are very strict so that the same high accuracies are required in the precision detection of CCD splicing. When detecting precision of CCD splicing the graphical markers with simple geometric structure in the CCD package are selected as templates. The position precision data of the graphical markers in each CCD are obtained using the template matching algorithm. Using the unified objective templates the focal plane which has multi-chip of CCD is detected by template matching algorithm. Experiment results show that the template matching algorithm can enhance the located precision of each CCD to 0.347m. The splicing precision detection with template matching algorithm can avoid the subjective error caused by the conventional detection method. And its results are more accurate. In addition without manual intervention in the process of precision detection the efficiency of precision detection is improved. 2011 IEEE.

Data preprocessing of the exterior field of vision assembling photogrammetric camera (EI CONFERENCE) 会议论文 OAI收割
3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, July 8, 2007 - July 12, 2007, Chengdu, China
作者: Li J.; Li J.; Li J.; Liu J.; Liu J.

收藏 | 浏览/下载：67/0 | 提交时间：2013/03/25

Transmit array photogrammetric camera can obtain image which is high geometric fidelity and high photogrammetric quality. However the single chip array CCD image sensor camera can't meet the need of measuring precision and photogrammetric covering area. In order to obtain large numbers of information and extensive photogrammetric covering area we must increase field of vision angle and improve photogrammetric covering area. And all these objects can be realized by exterior field of vision assembling photogrammetric camera. Two side work must be done before images which obtained by exterior field of vision assembling photogrammetric camera be used in photogrammetry. First all assembling camera focal plane need be converted to a benchmark coordinate focal plane to realize camera digital assembling. Second images must be re-sampled and processing. Because of coordinate conversion two images from different assembling cameras can be established function relation which a pixel of image from a camera is corresponding to a pixel of another image from different camera. But through this conversion some pixels maybe extrusion together and other pixels separate on an image area. So interpolation direction finding(IDF) is used to obtain these pixels and realize image re-sampling. In this paper the structure of exterior field of vision assembling photogrammetric camera is analyzed and the coordinate conversion method of exterior field of vision assembling photogrammetric camera and image gray re-sampling method also can be discussed. All the works are based to data pretreatment of exterior vision assembling photogrammetric camera.

Geometrical modulation transfer function of different active pixel of CMOS APS (EI CONFERENCE) 会议论文 OAI收割
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 2, 2005 - November 5, 2005, Zian, China
作者: Li J.; Liu J.; Liu J.; Liu J.; Li J.

收藏 | 浏览/下载：23/0 | 提交时间：2013/03/25

The geometrical Modulation Transfer Function (MTF) of CMOS APS (active pixel sensor) is analyzed in this paper. Advanced APS have been designed and fabricated where different pixel shapes such as square rectangle and L shape were placed because the amplifier circuit and other function circuits inter pixel of APS take up some pixel area. MTF is an important figure of merit in focal plane array imaging sensors. Research on analyzing the MTF for the proper pixel shape is currently in progress for a centroidal configuration of a target position. MTF will give us a more complete understanding of the tradeoffs opposed by the different pixel designs and by the signal processing conditions. Based on image sensor sampling and reconstructing model the MTF expression of any active pixel shape has been deduced in this paper. According to actual pixel shape three different active area pixels were analyzed they were square rectangle and L shape their Fill Factor (FF) is 30% 44% and 55% respectively. Results of simulation experiments indicate that different pixel geometrical characteristics contribute significantly to the figures of their MTF. Different geometrical shape of active sensitive area of pixel and different station in pixel would influence MTF figures. The analysis results are important in designing better APS pixel and more important in analyzing imaging system performance of APS subpixel precision system.

Performance analysis of extended wavelength InGaAs photovoltaic detectors grown with gas source MBE 期刊论文 OAI收割
JOURNAL OF INFRARED AND MILLIMETER WAVES, 2006, 卷号: 25, 期号: 4, 页码: 241-245
Hao, GQ; Zhang, YG(张永刚）; Gu, Y; Li, AZ; Zhu, C

收藏 | 浏览/下载：18/0 | 提交时间：2012/03/24

FOCAL-PLANE ARRAY DARK-CURRENT GENERATION-RECOMBINATION PHOTO-DIODES PHOTODIODES

A novel method to determine the FOCAL energy range 期刊论文 OAI收割
chin. opt. lett., 2005, 卷号: 3, 期号: 10, 页码: 589, 592
Dongqing Zhang; 王向朝; Weijie Shi

收藏 | 浏览/下载：1471/258 | 提交时间：2009/09/18

diffraction and gratings focal-plane-array image processors instrumentation measurement and metrology optical devices