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Image_quality_assessment

于 2012-11-21 发布文件大小:181KB

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下载积分: 1 下载次数: 138

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代码说明：

无参考图像质量评价，输入图像，输出评价指标，介于0至100之间(image quality assessment)

文件列表：

biqi.m,7526,2009-12-18
jpeg_quality_score.m,3510,2009-10-26
model_89,107434,2009-12-18
model_89_blur,22348,2009-10-26
model_89_ff,32146,2009-12-18
model_89_jp2k,25058,2009-10-26
model_89_wn,22273,2009-10-26
range2,364,2009-12-18
range2_blur,362,2009-10-26
range2_ff,373,2009-12-18
range2_jp2k,358,2009-10-26
range2_wn,393,2009-10-26
readme.txt,5703,2009-12-18
svm-predict.exe1,109056,2009-04-01
svm-scale.exe1,82432,2009-04-01

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xiaobosuanfa
采样频率 fs=10000 轴承外环故障信号 fid=fopen( bearingout.dat , r ) 故障 N=1024 xdata=fread(fid,N, int16 ) fclose(fid) xdata=(xdata-mean(xdata))/std(xdata,1) 时域波形 figure(1) plot(1:N,xdata) xlabel( 时间 t/n ) ylabel( 电压 V/v ) db10小波进行4层分解一维小波分解 [c,l] = wavedec(xdata,4, db10 ) 重构第1～4层细节信号 d4 = wrcoef( d ,c,l, db10 ,4) d3 = wrcoef( d ,c,l, db10 ,3) d2 = wrcoef( d ,c,l, db10 ,2) d1 = wrcoef( d ,c,l, db10 ,1) ( Sampling frequency fs = 10000 bearing outer ring fault signal fid = fopen (' bearingout.dat' , ' r' ) failure N = 1024 xdata = fread (fid, N, ' int16' ) fclose (fid ) xdata = (xdata-mean (xdata))/std (xdata, 1) time-domain waveform figure (1) plot (1: N, xdata) xlabel (' Time t/n' ) ylabel ( ' voltage V/v' ) db10 wavelet decomposition 4 layer one-dimensional wavelet decomposition [c, l] = wavedec (xdata, 4, ' db10' ) 1 ~ 4 reconstructed detail signal d4 = wrcoef (' d' , c, l, ' db10' , 4) d3 = wrcoef (' d' , c, l, ' db10' , 3) d2 = wrcoef (' d' , c, l, ' db10' , 2) d1 = wrcoef (' d' , c, l, ' db10' , 1) )

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2007-07-15 14:31:45下载

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Image_quality_assessment

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