edgedetect.rar_图像边缘检测小波 matlab_matlab例程_数值算法/人工智能下载-pudn.com

<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <meta name="generator" content="pdf2htmlEX"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <link rel="stylesheet" href="https://static.pudn.com/base/css/base.min.css"> <link rel="stylesheet" href="https://static.pudn.com/base/css/fancy.min.css"> <link rel="stylesheet" href="https://static.pudn.com/prod/directory_preview_static/622bb70e15da9b288bd9cf8e/raw.css"> <script src="https://static.pudn.com/base/js/compatibility.min.js"></script> <script src="https://static.pudn.com/base/js/pdf2htmlEX.min.js"></script> <script> try{ pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({}); }catch(e){} </script> <title></title> </head> <body> <div id="sidebar" style="display: none"> <div id="outline"> </div> </div> <div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/622bb70e15da9b288bd9cf8e/bg1.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">clear all; </div><div class="t m0 x1 h3 y3 ff1 fs0 fc0 sc0 ls0 ws0">load wbarb; </div><div class="t m0 x1 h4 y4 ff1 fs0 fc0 sc0 ls0 ws0">I = ind2gray(X,map);<span class="fc1">%<span class="ff2">检索图转成灰度图 </span></span></div><div class="t m0 x1 h3 y5 ff1 fs0 fc0 sc0 ls0 ws0">imshow(I); </div><div class="t m0 x1 h4 y6 ff1 fs0 fc0 sc0 ls0 ws0">I1 = imadjust(I,stretchlim(I),[0,1]);<span class="fc1">%<span class="_ _0"></span><span class="ff2">调整图像的像素值，可以改变对比度和颜色 </span></span></div><div class="t m0 x1 h3 y7 ff1 fs0 fc0 sc0 ls0 ws0">figure; </div><div class="t m0 x1 h3 y8 ff1 fs0 fc0 sc0 ls0 ws0">imshow(I1); </div><div class="t m0 x1 h3 y9 ff1 fs0 fc0 sc0 ls0 ws0">[N,M] = size(I); </div><div class="t m0 x1 h3 ya ff1 fs0 fc0 sc0 ls0 ws0">h = [0.125,0.375,0.375,0.125]; </div><div class="t m0 x1 h3 yb ff1 fs0 fc0 sc0 ls0 ws0">g = [0.5,-0.5]; </div><div class="t m0 x1 h3 yc ff1 fs0 fc0 sc0 ls0 ws0">delta = [1,0,0]; </div><div class="t m0 x1 h3 yd ff1 fs0 fc0 sc0 ls0 ws0">J = 3; </div><div class="t m0 x1 h4 ye ff1 fs0 fc0 sc0 ls0 ws0">a(1:N,1:M,1,1:J+1) = 0; <span class="fc1">%<span class="ff2">赋初值</span></span></div><div class="t m0 x1 h3 yf ff1 fs0 fc0 sc0 ls0 ws0">dx(1:N,1:M,1,1:J+1) = 0; </div><div class="t m0 x1 h3 y10 ff1 fs0 fc0 sc0 ls0 ws0">dy(1:N,1:M,1,1:J+1) = 0; </div><div class="t m0 x1 h3 y11 ff1 fs0 fc0 sc0 ls0 ws0">d(1:N,1:M,1,1:J+1) = 0; </div><div class="t m0 x1 h4 y12 ff1 fs0 fc0 sc0 ls0 ws0">a(:,:,1,1) = conv2(h,h,I,'same'); <span class="fc1">%<span class="_ _0"></span><span class="ff3">C = conv2(A,B) C = conv2(A,B)<span class="ff2">返回矩阵<span class="_ _1"> </span></span>A<span class="_ _1"> </span><span class="ff2">和<span class="_ _2"> </span></span>B<span class="_ _2"> </span><span class="ff2">的二</span></span></span></div><div class="t m0 x1 h4 y13 ff2 fs0 fc1 sc0 ls0 ws0">维卷积<span class="_ _2"> </span><span class="ff3">C<span class="_ _0"></span></span>。若<span class="_ _2"> </span><span class="ff3">A<span class="_ _1"> </span></span>为<span class="_ _2"> </span><span class="ff3">ma×na<span class="_ _1"> </span></span>的矩阵，<span class="ff3">B<span class="_ _2"> </span></span>为<span class="_ _1"> </span><span class="ff3">mb×nb<span class="_ _2"> </span></span>的矩阵，则<span class="_ _1"> </span><span class="ff3">C<span class="_ _2"> </span></span>的大小为</div><div class="t m0 x1 h4 y14 ff3 fs0 fc1 sc0 ls0 ws0">(ma+mb+1)×(na+nb+1)<span class="ff2">。</span></div><div class="t m0 x1 h3 y15 ff1 fs0 fc0 sc0 ls0 ws0">dx(:,:,1,1) = conv2(delta,g,I,'same'); </div><div class="t m0 x1 h3 y16 ff1 fs0 fc0 sc0 ls0 ws0">dy(:,:,1,1) = conv2(g,delta,I,'same'); </div><div class="t m0 x1 h3 y17 ff1 fs0 fc0 sc0 ls0 ws0">x = dx(:,:,1,1); </div><div class="t m0 x1 h3 y18 ff1 fs0 fc0 sc0 ls0 ws0">y = dy(:,:,1,1); </div><div class="t m0 x1 h3 y19 ff1 fs0 fc0 sc0 ls0 ws0">d(:,:,1,1) = sqrt(x.^2+y.^2); </div><div class="t m0 x1 h3 y1a ff1 fs0 fc0 sc0 ls0 ws0">I1 = imadjust(d(:,:,1,1),stretchlim(d(:,:,1,1)),[0 1]);figure;imshow(I1); </div><div class="t m0 x1 h3 y1b ff1 fs0 fc0 sc0 ls0 ws0">lh = length(h); </div><div class="t m0 x1 h3 y1c ff1 fs0 fc0 sc0 ls0 ws0">lg = length(g); </div><div class="t m0 x1 h3 y1d ff1 fs0 fc0 sc0 ls0 ws0">for j = 1:J+1 </div><div class="t m0 x1 h3 y1e ff1 fs0 fc0 sc0 ls0 ws0">lhj = 2^j*(lh-1)+1; </div><div class="t m0 x1 h3 y1f ff1 fs0 fc0 sc0 ls0 ws0">lgj = 2^j*(lg-1)+1; </div><div class="t m0 x1 h3 y20 ff1 fs0 fc0 sc0 ls0 ws0">hj(1:lhj)=0; </div><div class="t m0 x1 h3 y21 ff1 fs0 fc0 sc0 ls0 ws0">gj(1:lgj)=0; </div><div class="t m0 x1 h3 y22 ff1 fs0 fc0 sc0 ls0 ws0">for n = 1:lh </div><div class="t m0 x1 h3 y23 ff1 fs0 fc0 sc0 ls0 ws0">hj(2^j*(n-1)+1)=h(n); </div><div class="t m0 x1 h3 y24 ff1 fs0 fc0 sc0 ls0 ws0">end </div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div> </body> </html>