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Description: Automatic target detection in SAR image is the first stage in the ATR (Automatic Target Recognition) system. It is very important to improve the computing efficiency of the whole system. A conventional automatic target detection method is CFAR (constant false alarm rate) which is based only on the amplitude, discards the phase and thereby sacrifices half information of the SAR imagery. Almost each CFAR brings a large number of false alarms. 2L-IHP (two-look internal Hermitian product) is a new method which exploits the phase and amplitude information. In this paper, both CFAR and 2L-IHP algotithms are compared with an emphasis on 2L-IHP. The 2L-IHP algorithm for target detection is discussed briefly first. In order to apply it widely, it is modified to circumvent the constraint of the data. For polarimetric SAR images, PWF (Polarimetric Whitening Filter) is used to generate an image for target detection. According to ADTS data set, these algorithms are analyzed and evaluated respectively. C-、L- and P- band AIRSAR data are also processed, and some tentative conclusions are derived: Considering the penetrating ability of the microwave, L-band got the best detection accuracy of the three bands; HH polarization performed better for target detection than VV and HV polarization; Moreover, because more information is contained in polarimetric SAR data, here, we conclude that polarimetric SAR data have advantages over single polarized SAR data when they are applied for target detection. But all these conclusions need further validation.
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Size: 288371 |
Author: xbtown@126.com |
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Description: SAR滤波方法，空间域的lee滤波，希望有用-SAR filtering method, the spatial filter lee, useful
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Size: 1024 |
Author: 孙璐 |
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Description: 合成孔径雷达图像(SAR)基于相关模型的matlab去斑算法，程序中需确定等效视数和滤波窗口大小，然后就能得到平滑后的SAR图像-synthetic aperture radar images (SAR) model based on the relevant removing blotches Matlab algorithms, procedures required to determine the equivalent number of looks and filter window size, and then we can smooth the SAR image
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Size: 1024 |
Author: leilin |
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Description: SAR滤波方法，空间域的Kuan滤波，希望有用 -SAR filtering method, the spatial filter Kuan, useful
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Size: 1024 |
Author: yuhanzhou |
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Description: Forst滤波器,实现SAR图像相干斑点去噪-Forst filter, in SAR images speckle denoising
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Size: 1024 |
Author: 潘志刚 |
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Description: 几种常见的sar图像去噪方法，比如有frost滤波，lee滤波，卡尔曼滤波等。-Several common sar image denoising methods, such as there is frost filter, lee filter, Kalman filtering.
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Size: 2048 |
Author: 连强 |
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Description: 对极化SAR图像进行改进的PWF（极化白化滤波）处理，最终可分别输出四个极化通道的图像数据。
输入输出都是雷达接收到的电场强度信息，要转化为图像还需要计算其幅度值并转换到255灰度范围内。-Of polarization SAR images to improve the PWF [polarization whitening filter] treatment, and ultimately can be output separately polarization four-channel image data. Input and output are the radar received electric field strength information, it is necessary to translate into images is also necessary to calculate their magnitude values and converted to 255 gray-scale range.
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Size: 1024 |
Author: 郎志超 |
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Description: 针对sar图像的lee滤波程序，与其他滤波效果对比来说，效果比较好。-lee filter based on sar image
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Size: 1024 |
Author: 张蕊 |
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Description: SAR图像三种滤波方法： 1、gamma_MAP滤波； 2、均方差滤波： 3、Lee滤波-SAR image filtering method three: 1, gamma_MAP filter 2, mean square error filter: 3, Lee filter
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Size: 2048 |
Author: 袁焕江 |
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Description: 关于MTALAB的Forst滤波程序主体以及SAR图像的处理-Forst of MTALAB filter on the main program as well as the SAR image processing
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Size: 2048 |
Author: 哈哈 |
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Description: 可变窗lee滤波程序，可根据像素周围复杂情况自动确定窗口大小，本程序是根据极化SAR图像编写的，也可改为普通图像-Variable window filter lee procedures, according to the complexity of pixels around the window size automatically determined, the procedure is based on the preparation of polarization SAR images, and it can be changed to ordinary images
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Size: 3072 |
Author: 断刀割月 |
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Description: SAR处理滤波器，进行滤波处理，获得良好的结果-SAR processing filter, filtering processing, to obtain good results
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Size: 2048 |
Author: sophie |
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Description: 具有RCMC修正的合成孔径雷达成像RD算法，其中可以修改不同的参数(程序中已标注)-RD with RCMC algorithm in SAR imaging.You can alter sevral coefficients which have been noted in the codes
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Size: 1024 |
Author: meizi |
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Description: Lee滤波器，具有很好的去噪效果，结合各种小波，可以有效去除SAR图像噪声。-Lee filter, has a good de-noising effect of combination of wavelet can effectively remove the SAR image noise.
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Size: 13312 |
Author: Jason |
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Description: sar滤波中最经典的频率域滤波算法.效果也不错.-sar filtering of the most classic frequency domain filtering algorithm. effect is not bad.
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Size: 1024 |
Author: 天蝎 |
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Description: 三维Lee滤波，对三维SAR图像和超声波图像的相干斑进行抑制-3D Lee filter, three-dimensional SAR images and ultrasound images to suppress the speckle
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Size: 1024 |
Author: weishunjun |
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Description: 几种常用的SAR图像滤波程序：初值滤波、中值滤波、维纳滤波、Lee滤波、kuan滤波等-some common filter program of SAR image,such as Lee filter,kuan filter.
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Size: 1024 |
Author: lihongyu |
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Description: sar图像滤波（kuan lee） -sar image filtering (kuan lee) sar image filtering (kuan lee)
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Size: 1024 |
Author: 张冲 |
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Description: sar影像滤波 分割 全局优化的多相C.V模型在对SAR图像进行分割时,获取边缘指示函数的方式是通过ROEWA算子(sar filter segmention An Experimental Study of X-Band Synthetic Aperture Radar (SAR) Imagery for Marine Oil Slick Monitoring)
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Size: 77824 |
Author: 小豆豆打怪
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Description: sar滤波的几种算法，Lee滤波，kuan滤波，frost滤波(Several algorithms, SAR filter, Lee filter, Kuan filter, frost filter)
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Size: 1024 |
Author: 凹凸不会
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