机构

• 长春光学精密机械与物... [2]
• 计算技术研究所 [1]
• 自动化研究所 [1]

采集方式

• OAI收割 [4]

内容类型

• 会议论文 [2]
• 期刊论文 [2]

发表日期

• 2016 [2]
• 2010 [2]

学科主题

筛选

浏览/检索结果: 共4条，第1-4条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Socio-mobile landmark recognition using local features with adaptive region selection 期刊论文  OAI收割 NEUROCOMPUTING, 2016, 卷号: 172, 页码: 100-113 作者:  Zhang, Chunjie;  Zhang, Yifan;  Zhu, Xiaobin;  Xue, Zhe;  Qin, Lei 收藏  |  浏览/下载：101/0  |  提交时间：2016/01/18 Mobile  Social relationship  Adaptive region selection  Local feature  Geo-codebook  Visual recognition   Socio-mobile landmark recognition using local features with adaptive region selection 期刊论文  OAI收割 NEUROCOMPUTING, 2016, 卷号: 172, 页码: 100-113 作者:  Zhang, Chunjie;  Zhang, Yifan;  Zhu, Xiaobin;  Xue, Zhe;  Qin, Lei   |  收藏  |  浏览/下载：32/0  |  提交时间：2019/12/13 Mobile  Social relationship  Adaptive region selection  Local feature  Geo-codebook  Visual recognition   Electro-optical imaging system identification using pseudo-random binary pattern (EI CONFERENCE) 会议论文  OAI收割 2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China Le Y.; Jian W.; Jianzhong Z.; Qiang S.; Jianzhuo L. 收藏  |  浏览/下载：22/0  |  提交时间：2013/03/25 A method using pseudo-random binary pattern is developed for electro-optical imaging system identification. The imaging system is taken as a stable  linear  time-invariant  and causal filter  and its transfer function is measured through the pseudo-random binary sequence impulse responses identification. A digital mirror device (DMD) light projector is developed as the target generator  and wavelet thresholding is used to denoise the captured image. Pre-filtering spectral estimation algorithm with adaptive parameter selection is also proposed for the identification process  overcoming the challenge brought by the size limit derived from the optical isoplantic region. Simulations and experiments are presented to show the effectiveness of the proposed method.0-64. 2010 IEEE.   Modulation transfer function measurement of sampled imaging systems in field test (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:  Yang L.;  Zhang J.;  Zhang J.;  Zhang J.;  Wang J. 收藏  |  浏览/下载：26/0  |  提交时间：2013/03/25 A digital mirror device (DMD) based light projector was developed as the target generator in modulation transfer function (MTF) measurement. In order to overcome the sampling-scene phase effect in MTF measurement of sampled imaging systems  a method using random targets is introduced to yield a phase-averaged MTF. The main potential problem of implementing this method is the fact that the stationary assumption of the random targets may be vitiated in practical measurement  especially in field test due to the ill condition. We provide an efficient model-independent way of analyzing and isolating the spectral contents arising from these additional contributions to MTF measurement. Algorithms with adaptive parameter selection were also developed for spectral estimation of the test image in order to overcome the challenge brought by the size limit of the test matrices for one certain field of view derived from the isoplantic region. The MTF measurement of a CCD video imager is used to demonstrate the measurement technique and illustrate the benefits over other methods. In order to validate the results  comparisons have been made between MTF measurements of imager implemented using this method and bar target direct measurements. 2010 Copyright SPIE - The International Society for Optical Engineering.