中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共5条，第1-5条

帮助

条数/页：排序方式：
	Image registration based on Mexican-hat wavelets and pseudo-Zernike moments (EI CONFERENCE) 会议论文 OAI收割 2012 World Automation Congress, WAC 2012, June 24, 2012 - June 28, 2012, Puerto Vallarta, Mexico 作者: Liu Y.; Liu Y.; Liu Y. 收藏 \| 浏览/下载：37/0 \| 提交时间：2013/03/25 Image registration is a key technique in pattern recognition and image processing and it is widely used in many application areas such as computer vision remote sensing image fusion and object tracking. A method for image registration combining Mexican-hat wavelets and pseudo-Zernike moments is proposed. Firstly feature points are extracted using scale-interaction Mexican-hat wavelets in the reference image and sensed image respectively. Then pseudo-Zernike moments are used to match them and classical RANSAC used to eliminate the wrong matches. And then the well match points are used to estimate the best affine transform parameters by least squares minimization. At last the sensed image is transformed and resampled to accomplish the image registration. The experiments indicate that the proposed algorithm extracts feature points and matches them exactly and eliminates wrong matched points effectively and achieves nice registration results. 2012 TSI Press.
	Study on Automatic Detection of Airplane Object in Remote Sensing Images 会议论文 OAI收割 3rd Internationa Conference on Fuzzy Information and Engineering (ICFIE 2009), Chongqing, PEOPLES R CHINA, SEP 26-29, 2009 Yang, Guang; Zhang, Bai; Wang, Xiao-Juan; Ren, Chun-Ying; Chen, Ke-Xiong; Wang, Zong-Ming; Zhang, Yong 收藏 \| 浏览/下载：19/0 \| 提交时间：2011/07/20 Morphology of mathematics remote sensed image detection of airplane object erosion dilation
	Study on remotely sensed image fusion method based on FFT and CIELab transform 期刊论文 OAI收割 Wuhan Daxue Xuebao (Xinxi Kexue Ban)/ Geomatics and Information Science of Wuhan University, 2009, 卷号: 34, 期号: 8, 页码: 924-927 Chen; Luo; Li; Shen; Sheng1; Jiancheng1; Junli2; Zhanfeng1 收藏 \| 浏览/下载：26/0 \| 提交时间：2011/08/19 Image fusion - Laboratories - Remote sensing - CIE Lab - FFT - Fusion - Fusion methods - Gram-schmidt - Remotely sensed images - Spectral images - Spectral sharpening
	图像对应点确定及其应用学位论文 OAI收割工学硕士, 中国科学院自动化研究所: 中国科学院研究生院, 2007 万崇玮收藏 \| 浏览/下载：79/0 \| 提交时间：2015/09/02 对应点图像匹配局部特征 SIFT 匹配扩散视频镜头检测遥感影像配准 Point correspondence Image matching Local feature SIFT Match propagation Video shot detection Remote sensed image registration
	A new spaceborne compression approach for remote sensing imagery (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: Xu S. 收藏 \| 浏览/下载：27/0 \| 提交时间：2013/03/25 After analyzing advantages and disadvantages of these typical encoding methods: SPIHT and VQ a "DWT+MRLE" approach for spaceborne data compression was proposed in this paper. This approach includes two steps: Discrete Wavelet Transform (DWT) and Modified Run Length Encoding (MRLE). The former used CDF9/7 biorthogonal wavelet filters to powerfully get rid of correlation between pixels in imagery. The later put enlightening information into the lowest bit of some key-position transform coefficients. Consequently CDF9/7 and MRLE together make hardware platform remain high real-time capability and help reconstructed images keep good fidelity with PSNR being about 40dB compared with the original ones. Comparison between experimentations on SPOT4's low-spatial-resolution (10m) imagery and Ikonos2's high-spatial-resolution (1m) imagery shows this "DWT+MRLE" method having better performance for remote-sensed imagery especially those of higher resolution. Although inferior to 8:1 Compression Ration (CR) here near 5:1 is greater than France SPOT5's 3:1 and American Ikonos2's 11:2.6 on-board data compression. More important this method having less computational amount is good for spaceborne capability of real time. The consumed time of different image size is also presented in this paper based on TI TMSC6416 DSP chip with 600MHz CPU cycle clock.