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浏览/检索结果: 共10条，第1-10条 帮助 限定条件 专题：长春光学精密机械与物理研究所    第一署名单位    第一作者单位    通讯作者单位     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序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 Design of monocentric wide field-of-view and high-resolution computational imaging system 期刊论文 Acta Physica Sinica, 2019, 卷号: 68, 期号: 8, 页码: 10 作者:  F.Liu;  Y.Z.Wei;  P.L.Han;  J.W.Liu;  X.P.Shao 收藏  |  浏览/下载：1/0  |  提交时间：2020/08/24 wide field of view and high-resolution imaging system,computational,imaging,optical system design,multi-scale imaging,Physics   Compressed sensing imaging system based on improved theoretical model and its weighted iterative strategy 期刊论文 Optics Communications, 2019, 卷号: 439, 页码: 76-84 作者:  Y.H.Li;  X.D.Wang;  Z.Wang 收藏  |  浏览/下载：1/0  |  提交时间：2020/08/24 Computational imaging,Compressed sensing,Image restoration,reconstruction,exposure,Optics   A Novel Medical Image Edge Detection Method Based on Reinforcement Learning and Ant Colony Optimization 期刊论文 Journal of Medical Imaging and Health Informatics, 2019, 卷号: 9, 期号: 1, 页码: 175-182 作者:  X.H.Wang;  J.H.Ouyang;  Y.G.Zhu;  H.B.Yu;  H.L.Li 收藏  |  浏览/下载：1/0  |  提交时间：2020/08/24 Medical Imaging,Image Processing,Ant Colony Optimization,Reinforcement Learning,algorithm,aco,Mathematical & Computational Biology,Radiology, Nuclear Medicine &,Medical Imaging   A novel super-resolution imaging method based on TDI CCD charge transfer and random exposure 期刊论文 Optics Communications, 2018, 卷号: 426, 页码: 170-181 作者:  Li, Y. H.;  Wang, X. D.;  Wang, Z. 收藏  |  浏览/下载：3/0  |  提交时间：2019/09/17 Super-resolution  Computational imaging  Compressed sensing  Imaging  reconstruction  orthogonal matching pursuit  signal recovery  reconstruction  decomposition  Optics   Modeling and image motion analysis of parallel complementary compressive sensing imaging system 期刊论文 Optics Communications, 2018, 卷号: 423, 页码: 100-110 作者:  Li, Y. H.;  Wang, X. D.;  Wang, Z.;  Liu, D.;  Ding, Y. 收藏  |  浏览/下载：12/0  |  提交时间：2019/09/17 Computational imaging  Compressive sensing  Parallel measurement  Image  motion  coded-aperture design  reconstruction  information  modulation  Optics   MR image reconstruction via guided filter 期刊论文 Medical & Biological Engineering & Computing, 2018, 卷号: 56, 期号: 4, 页码: 635-648 作者:  Huang, H. Y.;  Yang, H.;  Wang, K. 收藏  |  浏览/下载：4/0  |  提交时间：2019/09/17 Image reconstruction  Magnetic resonance imaging  Compressive sensing  Guided filter  signal recovery  Computer Science  Engineering  Mathematical & Computational Biology  Medical Informatics   Panoramic aerial camera image motion measurement using a hybrid system (EI CONFERENCE) 会议论文 2010 3rd IEEE International Conference on Computer Science and Information Technology, ICCSIT 2010, July 9, 2010 - July 11, 2010, Chengdu, China Li G.; Jia P. 收藏  |  浏览/下载：23/0  |  提交时间：2013/03/25 Image motion compensation is significantly important for aerial camera photograph. To execute the compensation  we must determine the image motion exactly. This paper proposes a method of real-time image motion measurement for panoramic aerial cameras based on image processing using a hybrid system. Two cameras are simultaneously used in the hybrid system. One main linear CCD for imaging  while the other auxiliary low resolution high frame rate area CCD for determining the image motion based on 2D spatial correlation. The demanding computational requirements for the real-time 2D spatial correlation are covered by a joint transform optical correlator. Simulation test results show that the accuracy is improved and the measurement error is within 0.2 pixels for input images with SNR=1 dB. 2010 IEEE.   A new research of sub-pixel level accuracy of TDICCD remote sensing image registration (EI CONFERENCE) 会议论文 2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China Lu J.; He B.; Cong Y. 收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25 In the field of remote sensing imaging  TDICCD remote sensing images have a lot of their own characteristics  such as high-resolution  large amount of information  less overlapping parts of pixels  additional image blurring etc. Therefore  there exist many difficulties  especially in terms of high-accuracy registration of pairs of images. For that  this paper presents two new pixel interpolation method for sub-pixel level registering images that allows for scaling  translation and rotation. The proposed technique  which is based on the maximization of the correlation coefficient function  combines an efficient pixel-moving interpolation scheme with surface fitting  which greatly reduces the overall computational cost. The accuracy of the algorithm is evaluated by calculating correlation coefficient of couples of points belonging to images transformed with preset factors and also comparing it to other sorts of methods. The experiment results show that the accuracy of registration reaches 0.01 pixels. 2010 IEEE.   Modeling of satellite borne TDI CCD pitching imaging image motion velocity vector (EI CONFERENCE) 会议论文 2009 IEEE International Conference on Automation and Logistics, ICAL 2009, August 5, 2009 - August 7, 2009, Shenyang, China Zhang L.; Li S.; Jin G.; Yang X. 收藏  |  浏览/下载：13/0  |  提交时间：2013/03/25 In order to obtain three-dimensional observation effect with single satellite borne time delay and integrate charge coupled device (TDI-CCD)  pitching imaging is required. More accurate real-time image motion velocity vector computational model of space camera is also necessary to make the imaging perfect. Imaging motion velocity vector computation model must be set up on image plane at pitching imaging. According to the geometric relationship between the pitching imaging space camera and the Earth's rotation motion  satellite borne TDI CCD pitching imaging motion velocity vector model is derived by mapping the ground speed to the image plane and using coordinate transformation method. The numerical simulation results show that the image velocity model can reduce deviation angle error about 33' and about 30% image motion speed error compared to traditional ground velocity model. 2009 IEEE.   The geometric distortions correction of uncooled large-sized relative aperture infrared imaging system (EI CONFERENCE) 会议论文 Infrared Components and their Applications, November 8, 2004 - November 11, 2004, Beijing, China Fan X.; Sun Q.; Lu Z. 收藏  |  浏览/下载：15/0  |  提交时间：2013/03/25 The geometric distortion of infrared image  which was created by the large-sized relative aperture optical system. It could be corrected by the digital image processing technology. The magnitude of distortion would be enlarged quickly with the enlargement of relative aperture. Though the distortion could not impact on the articulation of the image  it would affect geometric location precision of the image directly. In this paper  the distortion correction of uncooled large-sized relative aperture infrared imaging system was discussed and the mathematical model of distortion correction was established. A algorithm of digital image processing was presented and applied based on control points by combining polynomial warping and space variant linear image interpolation. The method of polynomial warping was used to establish the locality relationship between the original image and the distortion ones. The space-variant linear image interpolation provided an efficient way to rebuild the frame of images. The computational costs of the proposed approach are very little and the precision is almost as high as the method of bicubic interpolation when compared to those of state-of-the-art nonlinear interpolation operators.