中国科学院机构知识库网格系统: 检索

Does Thermal Really Always Matter for RGB-T Salient Object Detection? 期刊论文 OAI收割
IEEE TRANSACTIONS ON MULTIMEDIA, 2023, 卷号: 25, 页码: 6971-6982
作者: Cong, Runmin; Zhang, Kepu; Zhang, Chen; Zheng, Feng; Zhao, Yao

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收藏 | 浏览/下载：8/0 | 提交时间：2024/05/20

Task analysis Decoding Semantics Object detection Location awareness Lighting Feature extraction RGB-T images salient object detection global illumination estimation semantic constraint provider localization and complementation

Wound intensity correction and segmentation with convolutional neural networks 期刊论文 OAI收割
CONCURRENCY AND COMPUTATION-PRACTICE & EXPERIENCE, 2017, 卷号: 29, 期号: 6
作者: Lu, Huimin; Li, Bin; Zhu, Junwu; Li, Yujie; Li, Yun

收藏 | 浏览/下载：36/0 | 提交时间：2017/07/07

illumination correction big data level set model eHealth analysis system

3D ILLUMINATION COMPENSATION AND RESIDUAL MOVEOUT METHOD IN THE ANGLE DOMAIN 期刊论文 OAI收割
JOURNAL OF SEISMIC EXPLORATION, 2014, 卷号: 23, 期号: 1, 页码: 31-40
作者: Zhang, Jiangjie; Lu, Baokun; Jing, Yongquan; Qin, Peirui

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收藏 | 浏览/下载：30/0 | 提交时间：2018/09/26

angle domain illumination analysis residual moveout signal-to-noise ratio

3D ILLUMINATION COMPENSATION AND RESIDUAL MOVEOUT METHOD IN THE ANGLE DOMAIN 期刊论文 OAI收割
JOURNAL OF SEISMIC EXPLORATION, 2014, 卷号: 23, 期号: 1, 页码: 31-40
作者: Zhang, Jiangjie; Lu, Baokun; Jing, Yongquan; Qin, Peirui

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收藏 | 浏览/下载：27/0 | 提交时间：2018/09/26

angle domain illumination analysis residual moveout signal-to-noise ratio

New LED illumination optical engine for micro-projection display (EI CONFERENCE) 会议论文 OAI收割
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Detector, Imager, Display, and Energy Conversion Technology, April 26, 2010 - April 29, 2010, Dalian, China
作者: Meng Z.; Meng Z.

收藏 | 浏览/下载：22/0 | 提交时间：2013/03/25

A new optical engine consisting of LEDs rectangular CPC rectangular lens array and micro display chip DMD is designed by using of KOLA illumination algorithm for micro-projection display. Detail description and analysis of the rectangular CPC and rectangular lens array are provided. The influence due to the size of rectangular CPC and rectangular lens array is analysed for illuminance uniformity on the DMD chip and light energy efficiency of the optical engine system by software ZEMAX. Based on the analysis of parameter of rectangular lens array the size of rectangular lens array more decrease the illumination uniformity. Experimental results show that the proposed illumination light optical engine can obtain perfect rectangular focula with higher light uniformity more than 90 % and higher energy efficiency of 40 % to meet the needs of micro-projection display at the same time the designed illumination optical engine compared with other uniformizing light algorithm have advantages such as: lesser capacity high illumination uniformity. 2010 Copyright SPIE - The International Society for Optical Engineering.

One-way wave equation based illumination analysis in angle domain 期刊论文 OAI收割
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2009, 卷号: 52, 期号: 6, 页码: 1606-1614
作者: Zhang Hui; Wang Chen-Xiang; Zhang Jian-Feng

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收藏 | 浏览/下载：17/0 | 提交时间：2018/09/26

Illumination analysis in angle domain One-way propagator AVA Seismic survey

One-way wave equation based illumination analysis in angle domain 期刊论文 OAI收割
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2009, 卷号: 52, 期号: 6, 页码: 1606-1614
作者: Zhang Hui; Wang Chen-Xiang; Zhang Jian-Feng

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收藏 | 浏览/下载：11/0 | 提交时间：2018/09/26

Illumination analysis in angle domain One-way propagator AVA Seismic survey

The calibration of faint simulation star magnitude based on single photon count technique (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Advances in Imaging Detectors and Applications, June 17, 2009 - June 19, 2009, Beijing, China
作者: Xu S.-Y.; Guo J.; Guo J.

收藏 | 浏览/下载：33/0 | 提交时间：2013/03/25

A calibration method of faint star magnitude of the star scene simulation device is proposed in this paper. In the research of simulation star magnitude luminometers and CCD devices are the general calibration devices which are used to measure the illumination intensity and calibrate its magnitude. But if the simulation magnitude is only sixth magnitude its illumination intensity is only 1.010-8 Lux. This illumination intensity level is the lowest illumination intensity that the commercial luminometer can detect. Hence the simulation star magnitude lower than six magnitude cannot be calibrated by luminoters. Likewise CCD devices also need an additive cooler in this case. When the single photon characteristic is presented due to the low luminosity of simulating light sources the simulation star magnitude can be calibrated by detecting its photon flux of radiation with the method of single photon count. In this paper the detection principle of single photon based on a compact designed PMT detecting of the radiation level of simulation star magnitude is advanced. Especially a spectrum match method is proved theoretically to be an effective means for selecting PMT photosensitive type. In the case of the detection object of the simulation star in visible wavelength a analysis indicates that the material of tri-alkali cathode materials its best choice after being compared the Signal-to-Noise of photon detector of several PMT photosensitive materials based on the different spectrum match ratio of different object light sources and different cathode materials. An experiment is employed to show the relationship of control voltage of PMT and its dark counter the relationship of the environment temperature of PMT and its dark counter which proves its only decades of CPS at room temperature. The so low dark counter avoids a bulky cooler and is convenient for installing it on the star scene simulation equipment. Finally in the experiment of calibrating the simulation star magnitudes the ability of its calibration is confirmed to reaches up to 12m meanwhile its calibration error is within 0.2m. 2009 SPIE.

Infrared face recognition using linear subspace analysis (EI CONFERENCE) 会议论文 OAI收割
MIPPR 2009 - Pattern Recognition and Computer Vision: 6th International Symposium on Multispectral Image Processing and Pattern Recognition, October 30, 2009 - November 1, 2009, Yichang, China
作者: Wang D.

收藏 | 浏览/下载：35/0 | 提交时间：2013/03/25

Infrared image offers the main advantage over visible image of being invariant to illumination changes for face recognition. In this paper based on the introduction of main methods of linear subspace analysis such as Principal Component Analysis (PCA) Linear Discriminant Analysis(LDA) and Fast Independent Component Analysis (FastICA) the application of these methods to the recognition of infrared face images offered by OTCBVS workshop are investigated and the advantages and disadvantages are compared. Experimental results show that the combination approach of PCA and LDA leads to better classification performance than single PCA approach or LDA approach while the FastICA approach leads to the best classification performance with the improvement of nearly 5% compared with the combination approach. 2009 Copyright SPIE - The International Society for Optical Engineering.

Target track system design based on circular projection (EI CONFERENCE) 会议论文 OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
Song H.-J.; Zhu M.; Hu S.; Shen M.-L.

收藏 | 浏览/下载：22/0 | 提交时间：2013/03/25

Template matching is the process of searching the present and the location of a reference image or an object in a scene image. Template matching is a classical problem in a scene analysis: given a reference image of an object decide whether that object exists in a scene image under analysis and find its location if it does. The template matching process involves cross-correlating the template with the scene image and computing a measure of similarity between them to determine the displacement. The conventional matching method used the spatial cross-correlation process which is computationally expensive. Some algorithms are proposed for this speed problem such as pyramid algorithm but it still can't reach the real-time for bigger model image. Moreover the cross-correlation algorithm can't be effective when the object in the image is rotated. Therefore the conventional algorithms can't be used for practical purpose. In this paper an algorithm for a rotation invariant template matching method based on different value circular projection target tracking algorithm is proposed. This algorithm projects the model image as circular and gets the radius and the sum of the same radius pixel value. The sum of the same radius pixel value is invariable for the same image and the any rotated angle image. Therefore this algorithm has the rotation invariant property. In order to improve the matching speed and get the illumination invariance the different value method is combined with circular projection algorithm. This method computes the different value between model image radius pixel sum and the scene image radius pixel sum so that it gets the matching result. The pyramid algorithm also is been applied in order to improve the matching speed. The high speed hardware system also is been design in order to meet the real time requirement of target tracking system. The results show that this system has the good rotate invariance and real-time property.