MATLAB圖像邊緣提取圖像高斯低通濾波DCT變換程序

1、實驗二邊緣提取作業(yè)要求:1.參考空間域圖像增強課的內(nèi)容，用Sobel邊緣算子提取圖像邊緣實驗程序如下：RGB=imread(E:圖像信號處理bmp格式圖片美女.bmp);isrgb(RGB);figure;imshow(RGB);I=rgb2gray(RGB);imshow(I);colorbar(horiz);isgray(I);ED=edge(I,sobel,0.08);imshow(ED)運行結果如下：D1D2D3D1D50歸2.xEileEditYi的IrisertluolsDectopJLindovHelpElieEditKievInsertloaLsDesktop11adwHelp

2、0金口邑E直71asD1030405060MBEiliE.dit野.曲InsAttIool-=op世indo#HGp司圉旦D金7呂貶岡E：LeditEi亡rrIps&i*tToolsH亡ski叩tindonrHlp10305060f.LltQd.LtEieivIjisertlatxlsDesktopHmdoh-HelpLilt.diterflLnseartloc-lsHcsktopImdcvHeLpD姿曰旨h靈遠O實驗四高斯低通濾波器作業(yè)要求:參考“頻率域圖像增強”課的內(nèi)容,采用高斯低通濾波器對圖片進行濾波操作,取半徑為5,15,30,80和230,分別輸出結果圖片實驗程序如下：(d0=5)l

3、1=imread(E:圖像信號處理bmp格式圖片荷花.bmp);I=rgb2gray(I1);s=fftshift(fft2(l);M,N=size(s);n=2;d0=5;n1=floor(M/2);n2=floor(N/2);fori=1:Mforj=1:Nd=sqrt(i-n1)A2+(j-n2F2);h=1*exp(-1/2*(dA2/d0A2);s(i,j)=h*s(i,j);endends=ifftshift(s);s=uint8(real(ifft2(s);figure;imshow(s);title(GLPF濾波(d0=5);GLFF遊遊dC=5)I-l|rXlittirlId

4、oIslini:vKlpnB諄檢礒鋼運）.3回D口昔命SIGLPFfei：dO=3C.GLPFtfEKKdQ=3O)I7,n|x|KileE.ditLnsertToolsOeiktopi.Ln.dnYHelp加ElIc-EdiI：riLnswI：toolsJjeJdopimdovHelp&n仿翌宜即晅匠口它RdiE工irrImert.IjoLh出injAmnEklpElIeEditMLcnrLusertILanlsHerk七阿BfindjcvHJjaR呂題耳霽旦近口居s回D孟口縛k歐耳旳越近GLPF濾浪(d0=5)H=1-O0金口國題直榔宜DK:住旦：H倚kt叩Hindor疋1衛(wèi)EilsdiL

5、im0iElZaolsQA-dctop,iid.MtjalpD虜日尋IB題目鋼迪.密祠丨回GLFFit?dQ=5JDDaEEil-s.ditYi蟲r*口LzartIool=Qa日Nap臣indoA1MLpEjleditYlc-Iu.5erloolsDesktopZindoHeLjGLPF謔法CdG-23OfGLPF德液dO=BO)實驗六DCT變換作業(yè)要求:1.參考“圖像壓縮”課的內(nèi)容,并參考有關資料,對輸入圖像進行離散余弦變換2.通過離散余弦逆變換,還原出原圖片實驗程序如下：RGB=imread(E:圖像信號處理bmp格式圖片美女.bmp);figure(1);imshow(RGB);I=rg

6、b2gray(RGB);figure(2);imshow(I);J=dct2(I);figure(3);imshow(log(abs(J),);colormap(jet(64);colorbar;J(abs(J)IixiEileEditiewLjisertToolslesktopWindowHelp$igure4EileEditMiewIjisertIooIeResktopKindovHelp，y#i獨巳舒眶EileEdityiewInsertIciolsHesktopHin丁卅HelptileBlitYiewInEertIooIeUesktnp崔mdcHelp浬匚ISlO|k7EUCKEil*ditXiivXnEertJodIeindovKLpfH.曙罰號邀氐和召I;舉I口翩口LiltQd.LtInstrtloalsKtzktoptinilmrHelp5虜日與丨h(huán)l檢直紳倒運.朋亙丿Fiftuie1TiSiXl，f詢匚口匚醫(yī)l1c.ditieri-InsertIdoIs氐ski.pp乂LmdixwKtlp滲口旨k霽近目用旦E.l1S.dit磴iawb=燈七dcIz山山!.叫i空iri4nMlp隹口氏口昌I