机构

• 长春光学精密机械与物... [1]
• 光电技术研究所 [1]
• 西安光学精密机械研究... [1]

采集方式

• OAI收割 [3]

内容类型

• 期刊论文 [2]
• 会议论文 [1]

发表日期

• 2013 [1]
• 2012 [1]
• 2006 [1]

学科主题

筛选

浏览/检索结果: 共3条，第1-3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 Rate pre-allocated compression for mapping image based on wavelet and rate-distortion theory 期刊论文  OAI收割 OPTIK, 2013, 卷号: 124, 期号: 14, 页码: 1836-1840 作者:  Li, Qihu;  Ren, Guoqiang;  Wu, Qinzhang;  Zhang, Xianyu 收藏  |  浏览/下载：25/0  |  提交时间：2015/04/17 Integer wavelet transform  Bit rate pre-allocated  Image coding  FPGA  Multiple DSP   Robust Reversible Watermarking via Clustering and Enhanced Pixel-Wise Masking 期刊论文  OAI收割 ieee transactions on image processing, 2012, 卷号: 21, 期号: 8, 页码: 3598-3611 作者:  An, Lingling;  Gao, Xinbo;  Li, Xuelong;  Tao, Dacheng;  Deng, Cheng 收藏  |  浏览/下载：28/0  |  提交时间：2012/09/03 Integer wavelet transform  k-means clustering  masking  robust reversible watermarking (RRW)   Detection and tracking of low contrast targets based on integertype lifting wavelet transform (EI CONFERENCE) 会议论文  OAI收割 ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China 作者:  Wang L.;  Wang L.;  Wang Y.;  Wang Y.;  Wang Y. 收藏  |  浏览/下载：18/0  |  提交时间：2013/03/25 This paper presents a method for detecting and tracking of low contrast targets. The new method uses an integer-type lifting wavelet transform and the proposed method doesn't extract patterns similar to a template  but finds parts having the same feature in the targets. We utilize one of integer-type lifting wavelet transforms that contains rounding-off arithmetic for mapping integers to integers. The lifting term contains parameters that are learned by using standard training images of targets. We assume that the targets include many high frequency components. In order to obtain the features of the targets  the lifting parameters are determined by a condition that high frequency components are vanished in wavelet transform. But the condition cannot be determined by the parameters wholly. So  we put an additional condition of minimizing the squared sum of the lifting parameters. The advantage of using integer-type wavelet transform is simple and robust to noise. Simulation illustrated the approach can detect and track the moving targets in dim background. We would test our algorithm in the TV tracking system.