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TUIXANG

于 2013-12-31 发布文件大小:118KB

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下载积分: 1 下载次数: 6

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基于兴趣点的对互信息度的图像匹配算法，介绍详细(Based on the mutual information of the image matching algorithm point of interest, Detailed)

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fuzzycmeans
Magnetic resonance (MR) images can be used to detect lesions in the brains of multiple sclerosis (MS) patients and is essential for diagnosing the disease and monitoring its progression. An automatic method is presented for segmentation of MS lesions in multispectral MR images. Firstly a PD-w image is subtracted its corresponding T1-w image to get an image in which the cerebral spinal fluid (CSF) is enhanced. Then based on kernel fuzzy c-means (KFCM) algorithm, the enhanced image and the corresponding T2-w image are segmented respectively to extract the CSF region and the CSF combining MS lesions region. A raw MS lesions image is obtained by subtracting the CSF region CSF combining MS region. By applying median filter and thresholding to the raw image, the MS lesions are detected finally. Results are quantitatively uated on BrainWeb images using Dice similarity coefficient (DSC). Finally, the potential of the method as well as its limitations are discussed.

2014-12-28 01:45:09下载

积分：1
wandden
it is a transform for copmpressing and decompressing and removing noise effectively.

2011-01-06 00:57:33下载

积分：1
te
说明：该程序能够成功地基于EPANET进行压力驱动状态模拟。(this program can perform pressure driven simulation based on EPANET.)

2012-10-11 15:37:40下载

积分：1
seismic-signal-procesing
震动信号的预警和过零率计算，需要有自己的原始震动信号(seismic signal processing zero_-pass rate)

2015-01-08 09:57:45下载

积分：1
integer-programming
可用于解决整数规划方面的问题。用matlab编写的源代码。(integer programming)

2011-09-17 21:00:56下载

积分：1
power_transfohyst
power_transfohyst,matlab仿真文件,电力电子、功率电子控制方面很有价值，调试通过(aspects of power_transfohyst, matlab simulation files, power electronics, power electronics control valuable debugging through)

2013-02-28 14:06:23下载

积分：1
one
产生右图所示图像f1(m,n)，其中图像大小为256×256，中间亮条为128 ×32，暗处=0，亮处=100。对其进行FFT： ① 同屏显示原图f1(m,n)和FFT(f1)的幅度谱图； ② 若令f2(m,n)=（-1）m+n f1(m,n)，重复以上过程，比较二者幅度谱的异同，简述理由； ③ 若将f2(m,n)顺时针旋转90 度得到f3(m,n)，试显示FFT(f3)的幅度谱，并与FFT(f2)的幅度谱进行比较； ④ 若将f1(m,n) 顺时针旋转90 度得到f4(m,n)，令f5(m,n)=f1(m,n)+f4(m,n)，试显示FFT(f5)的幅度谱，并指出其与FFT(f1)和FFT(f4)的关系； ⑤ 若令f6(m,n)=f2(m,n)+f3(m,n)，试显示FFT(f6)的幅度谱，并指出其与FFT(f2)和 FFT(f3)的关系，比较FFT(f6)和FFT(f5)的幅度谱。(Generating an image f1 (m, n) shown in the figure, wherein the image size is 256 256, the intermediate light bar 128 32 0 = dark, bright Department 100. Its FFT: ① screen display picture f1 (m, n) and the FFT (f1) of the amplitude spectrum ② If so f2 (m, n) = (-1) m+n f1 (m, n), repeat The above process, comparing the amplitude spectrum of the similarities and differences between the two, brief reasons ③ If f2 (m, n) 90 degrees clockwise to get f3 (m, n), try to display FFT (f3) the amplitude spectrum and with the FFT (f2) comparing the amplitude spectrum ④ If f1 (m, n) obtained by 90 degrees clockwise f4 (m, n), so f5 (m, n) = f1 (m, n)+f4 (m, n ), try to display FFT (f5) amplitude spectrum, and pointed out its relationship with the FFT (f1) and FFT (f4) of ⑤ If so f6 (m, n) = f2 (m, n)+f3 (m, n) and try to display the FFT (f6) amplitude spectrum, and pointed out its relationship with the FFT (f2) and FFT (f3), comparing FFT (f6) and FFT (f5) amplitude spectrum.)

2013-11-26 16:24:18下载

积分：1
MomentsTchebichef
moment s tchebichef algorithm

2013-05-27 04:46:29下载

积分：1
shiyanxinhao_fft
傅里叶变换在matlab中的实现过程，简洁代码。。(Fourier transform of the realization in matlab)

2009-05-11 14:03:39下载

积分：1
example4_5
分析双极性不归零码的功率谱特性请输入随机序列的长度N= (ubplot(312) plot(f,lpf) title( 低通滤波器 ) axis([-fs/2 fs/2-0.2 1.2]) subplot(313) plot(f,abs(yr_lpf)/N) title( 经低通滤波后的频谱 ) xlabel( f /Hz ) )

2010-05-25 20:56:23下载

积分：1

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