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	Comparison and simulation of subpixel imaging modes for linear CCD (EI CONFERENCE) 会议论文 OAI收割 2012 3rd International Conference on Information Technology for Manufacturing Systems, ITMS 2012, September 8, 2012 - September 9, 2012, Qingdao, China 作者: Li Y.; He B.; Li Y.; Li Y.; Li Y. 收藏 \| 浏览/下载：37/0 \| 提交时间：2013/03/25 Subpixel technique of linear CCD is effective to enhance the spatial resolution without increasing the focal length of optics and reducing the pixel size. To compare image quality of two main subpixel imaging modes quincunx sampling and four-point sampling a method to quantitatively evaluate image quality of subpixel based on MTF was proposed. The MTF of quincunx and four-point sampling modes were derived. Analytical results shows that theoretical limiting resolution of quincunx sampling and four-point sampling is improved to 1.4 and 1.86 times respectively and MTF values at Nyquist frequency of two modes are increased by 0.1106 and 0.1679 respectively. MTFA in (0 0.5) of two subpixel imaging modes were calculated and results illustrates that four-point sampling offers much more improvement with image quality than quincunx sampling at the cost of double amount of data. A model for simulating subpixel imaging using Matlab was established and simulation results of spoke target verify the theoretical analysis. (2012) Trans Tech Publications Switzerland.
	Estimating soil erosion using MODIS and TM images based on support vector machine and a trous wavelet SCI/SSCI论文 OAI收割 2011 作者: Tian J.; Xia J. 收藏 \| 浏览/下载：171/0 \| 提交时间：2012/06/08 TM MODIS Support vector machine A trous wavelet transform Soil erosion spatial-resolution improvement fusion
	Introducing object reflectance property and sensor spectral response into empirical mode decomposition based MODIS and TM image fusion SCI/SSCI论文 OAI收割 2008 作者: Tian J.; Xia J. 收藏 \| 浏览/下载：19/0 \| 提交时间：2012/06/08 spatial-resolution improvement support vector machines
	Improved best tradeoff for high-resolution image fusion based on spectral reflection function 会议论文 OAI收割 International Conference on Earth Observation Data Processing and Analysis, ICEODPA,, Wuhan, China, December 28, 2008 - December 30,2008 Wang, Zhongwu; Zhao, Zhongming 收藏 \| 浏览/下载：23/0 \| 提交时间：2014/12/07 This paper extended the best tradeoff fast intensity-hue-saturation (BTFIHS) fusion to a more general model. Firstly based-on the methods proposed by previous researches we integrated injecting strategy of spatial detail information into the fusion model and also adopted the idea of BTFIHS to keep the intensity unchanged with the corresponding pixel in panchromatic (PAN) image while the hue and saturation of every pixel using BTFIHS were equal to them using tradeoff fast intensity-hue-saturation (TFIHS). Then we got a general formula of the improved best tradeoff for high-resolution image fusion based-on getting injecting parameter by spectral reflection function (SRF). At last several experiments were carried on to analysis and discuss the quality of the new methods compared with their originals. Results show that the new method could yield a "true" high-resolution multispectral (MS) image with vast improvement in blue band and nearly 3.3% improvement in Q4 for all bands. 2008 SPIE.
	Resolution improvement in both azimuthal and range directions with repeat-pass spaceborne SAR - art. no. 67460N 会议论文 OAI收割 Conference on SAR Image Analysis, Modeling, and Techniques IX, Florence, ITALY, 2007 作者: Yunhua Zhang 收藏 \| 浏览/下载：37/0 \| 提交时间：2014/05/04 spaceborne SAR repeat-pass resolution improvement high-resolution stepped frequency chirp signals (SFCSs) matched filtering doppler spectrum spatial spectrum combination