我是靠谱客的博主 仁爱鸭子，这篇文章主要介绍【MATLAB100个实用小技巧】——图形处理(76-84)前言系列文章76. 交换显示图像77. 矢量数据的显示78. 图像分析（2）79. 图像逻辑操作80. 进度条的使用81. MRI 数据的显示82. 图像类型转换83. 特殊的图像显示技术84. 图像的几何操作，现在分享给大家，希望可以做个参考。
文章目录
- 前言
- 系列文章
- 76. 交换显示图像
- 77. 矢量数据的显示
- 78. 图像分析（2）
- 79. 图像逻辑操作
- 80. 进度条的使用
- 81. MRI 数据的显示
- 82. 图像类型转换
- 83. 特殊的图像显示技术
- 84. 图像的几何操作
前言
????MATLAB是一个功能强大的软件，我们可以利用MATLAB进行绘图、算法验证、仿真实验等等。在学习MATLAB的过程中，繁多的命令与代码往往容易使我们脑容量过载????????????
????本系列将总结一些常见的MATLAB编程小技巧????????
????可能有些地方会有些错误或者是不太完善的，还请大家在评论区直接指出❤️❤️❤️
系列文章
【MATLAB100个实用小技巧】——图形应用(1-10)
【MATLAB100个实用小技巧】——图形应用(11-20)
【MATLAB100个实用小技巧】——图形应用(21-32)
【MATLAB100个实用小技巧】——界面设计(33-43)
【MATLAB100个实用小技巧】——界面设计(44-55)
【MATLAB100个实用小技巧】——界面设计(56-66)
【MATLAB100个实用小技巧】——图形处理(67-75)
【MATLAB100个实用小技巧】——图形处理(76-84)
【MATLAB100个实用小技巧】——数值分析(85-100)
76. 交换显示图像
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36h0=figure('toolbar','none',... 'position',[198 56 500 500],... 'name','实例 76'); h1=axes('parent',h0,... 'position',[0.15 0.5 0.7 0.5],... 'visible','off'); u1=uimenu('parent',h0,... 'label','加载图像',... 'Foregroundcolor',[0.753 0.753 0.753],... 'tag','u1',... 'callback',[... '[X,map]=imread("D:opencvJPEGdataIMG_20210603_185840.jpg");,',... 'Y=imresize(X,2);,',... 'image(Y),',... 'colormap(map),',... 'axis image,',... 'camva(camva/2.5),',... 'disp(''单击鼠标左键点取需要的点''),',... 'disp(''单击鼠标右键确定最后一个点''),',... 'while 1,',... '[x,y]=ginput(1);,',... 'if ~strcmp(get(gcf,''selectiontype''),''normal''),',... 'break,',... 'end,',... 'ct=camtarget;,',... 'dx=x-ct(1);,',... 'dy=y-ct(2);,',... 'camdolly(dx,dy,ct(3),''movetarget'',''data''),',... 'drawnow,',... 'end']); u2=uimenu('parent',h0,... 'label','关闭',... 'Foregroundcolor',[0.753 0.753 0.753],... 'tag','u2',... 'callback','close');
????效果
77. 矢量数据的显示
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76h0=figure('toolbar','none',... 'position',[198 56 450 468],... 'name','实例 77'); h1=axes('parent',h0,... 'position',[0.3 0.45 0.5 0.5],... 'visible','off'); load wind; b1huidiao=[... 'cla,',... 'xmin = min(x(:));,',... 'xmax = max(x(:));,',... 'ymax = max(y(:));,',... 'zmin = min(z(:));,',... 'wind_speed = sqrt(u.^2 + v.^2 + w.^2);,',... 'hsurfaces = slice(x,y,z,wind_speed,[xmin,100,xmax],ymax,zmin);,',... 'set(hsurfaces,''FaceColor'',''interp'',''EdgeColor'',''none''),',... 'hcont = contourslice(x,y,z,wind_speed,[xmin,100,xmax],ymax,zmin);,',... 'set(hcont,''EdgeColor'',[.7,.7,.7],''LineWidth'',.5),',... '[sx,sy,sz] = meshgrid(80,20:10:50,0:5:15);,',... 'hlines = streamline(x,y,z,y,v,w,sx,sy,sz);,',... 'set(hlines,''LineWidth'',2,''Color'',''r''),',... 'view(3),',... 'daspect([2,2,1]),',... 'axis tight']; b2huidiao=[... 'cla,',... 'wind_speed = sqrt(u.^2 + v.^2 + w.^2);,',... 'hiso = patch(isosurface(x,y,z,wind_speed,40));,',... 'isonormals(x,y,z,wind_speed,hiso),',... 'set(hiso,''FaceColor'',''red'',''EdgeColor'',''none'');,',... 'hcap = patch(isocaps(x,y,z,wind_speed,40),''FaceColor'',''interp'',''EdgeColor'',''none'');,',... 'colormap hsv,',... 'daspect([1,1,1]);,',... '[f verts] = reducepatch(isosurface(x,y,z,wind_speed,30),0.07);,',... 'h1 = coneplot(x,y,z,u,v,w,verts(:,1),verts(:,2),verts(:,3),3);,',... 'set(h1,''FaceColor'',''blue'',''EdgeColor'',''none'');,',... 'xrange = linspace(min(x(:)),max(x(:)),10);,',... 'yrange = linspace(min(y(:)),max(y(:)),10);,',... 'zrange = 3:4:15;,',... '[cx,cy,cz] = meshgrid(xrange,yrange,zrange);,',... 'h2 = coneplot(x,y,z,u,v,w,cx,cy,cz,2);,',... 'set(h2,''FaceColor'',''green'',''EdgeColor'',''none'');,',... 'axis tight,',... 'box on,',... 'camproj perspective,',... 'camzoom(1.25),',... 'view(65,45),',... 'camlight(-45,45),',... 'lighting phong,',... 'set(hcap,''AmbientStrength'',.6)']; b1=uicontrol('parent',h0,... 'style','pushbutton',... 'units','points',... 'tag','b1',... 'backgroundcolor',[0.75 0.75 0.75],... 'string','可视化',... 'position',[50 100 60 20],... 'callback',b1huidiao); b2=uicontrol('parent',h0,... 'style','pushbutton',... 'units','points',... 'tag','b2',... 'backgroundcolor',[0.75 0.75 0.75],... 'string','锥形图',... 'position',[200 100 60 20],... 'callback',b2huidiao); b3=uicontrol('parent',h0,... 'style','pushbutton',... 'units','points',... 'tag','b3',... 'backgroundcolor',[0.75 0.75 0.75],... 'string','关闭',... 'position',[125 60 60 20],... 'callback','close');
????效果
78. 图像分析（2）
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68h0=figure('toolbar','none',... 'position',[198 56 350 468],... 'name','实例 78'); h1=axes('parent',h0,... 'position',[0.25 0.45 0.5 0.5],... 'visible','off'); I=imread('trees.tif'); imshow(I) colormap(copper); n=size(X,1); b1=uicontrol('parent',h0,... 'units','points',... 'tag','b1',... 'style','pushbutton',... 'string','轮廓图',... 'backgroundcolor',[0.75 0.75 0.75],... 'position',[30 100 50 20],... 'callback',[... 'cla,',... '[X,map]=imread(''trees.tif'');,',... 'X=double(I);,',... 'X=(0.25/256)*X;,',... 'C=copper(35);,',... 'set(gca,''colororder'',C(21:35,:),''box'',''on'');,',... 'imcontour(X,3);,',... 'axis([1 n 1 n]),',... 'axis(''ij''),',... 'axis(''square'')']); b2=uicontrol('parent',h0,... 'units','points',... 'tag','b2',... 'style','pushbutton',... 'string','伪彩图',... 'backgroundcolor',[0.75 0.75 0.75],... 'position',[100 100 50 20],... 'callback',[... 'cla,',... 'D=-del2(X);,',... 'pcolor(D),',... 'axis([1 n 1 n]),',... 'axis(''ij''),',... 'shading(''flat'')']); b3=uicontrol('parent',h0,... 'units','points',... 'tag','b3',... 'style','pushbutton',... 'string','3D 表面图',... 'backgroundcolor',[0.75 0.75 0.75],... 'position',[170 100 50 20],... 'callback',[... 'cla,',... 'D=-del2(X);,',... 'surf(X,D),',... 'colormap(copper),',... 'axis([1 n 1 n 0 1]),',... 'axis(''ij''),',... 'shading(''flat''),',... 'view(-20,75);']); b4=uicontrol('parent',h0,... 'units','points',... 'tag','b4',... 'style','pushbutton',... 'string','关闭',... 'backgroundcolor',[0.75 0.75 0.75],... 'position',[80 50 80 30],... 'callback','close');
????效果
79. 图像逻辑操作
有些小问题
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73h0=figure('toolbar','none',... 'position',[198 56 350 468],... 'name','实例 79'); h1=axes('parent',h0,... 'position',[0.25 0.45 0.5 0.5],... 'visible','off'); I=imread('trees.tif'); imshow(I) k1=~(I>100); k2=filter2(fspecial('laplacian'),I); k3=(k2>-4)&k1; % k4=imerode((k1,k3); % [r,c]=find(k4); % k5=bwselect(k1,c,r); b1=uicontrol('parent',h0,... 'units','points',... 'tag','b1',... 'style','pushbutton',... 'string','二值分割图',... 'backgroundcolor',[0.75 0.75 0.75],... 'position',[30 110 50 20],... 'callback',[... 'cla,',... 'imshow(k1)']); b2=uicontrol('parent',h0,... 'units','points',... 'tag','b2',... 'style','pushbutton',... 'string','滤波结果图',... 'backgroundcolor',[0.75 0.75 0.75],... 'position',[100 110 50 20],... 'callback',[... 'cla,',... 'imshow(k2)']); b3=uicontrol('parent',h0,... 'units','points',... 'tag','b3',... 'style','pushbutton',... 'string','阈值化图',... 'backgroundcolor',[0.75 0.75 0.75],... 'position',[170 110 50 20],... 'callback',[... 'cla,',... 'imshow(k3)']); b4=uicontrol('parent',h0,... 'units','points',... 'tag','b4',... 'style','pushbutton',... 'string','目标的核',... 'backgroundcolor',[0.75 0.75 0.75],... 'position',[30 60 50 20],... 'callback',[... 'cla,',... 'imshow(k4)']); b5=uicontrol('parent',h0,... 'units','points',... 'tag','b5',... 'style','pushbutton',... 'string','目标分割图',... 'backgroundcolor',[0.75 0.75 0.75],... 'position',[100 60 50 20],... 'callback',[... 'cla,',... 'imshow(k5)']); b6=uicontrol('parent',h0,... 'units','points',... 'tag','b6',... 'style','pushbutton',... 'string','关闭',... 'backgroundcolor',[0.75 0.75 0.75],... 'position',[170 60 50 20],... 'callback','close');
????效果
80. 进度条的使用
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39h0=figure('toolbar','none',... 'position',[198 56 350 450],... 'name','实例 80'); h1=axes('parent',h0,... 'position',[0.25 0.45 0.6 0.5],... 'visible','off'); I=imread('trees.tif'); imshow(I); b1=uicontrol('parent',h0,... 'units','points',... 'tag','b1',... 'style','pushbutton',... 'string','转换',... 'backgroundcolor',[0.75 0.75 0.75],... 'position',[50 80 60 25],... 'callback',[... 'handlek=waitbar(0,''initializing......'');,',... 'pause(0.5),',... 'i=1;,',... 'while i<=100,',... 'waitbar(i/100,handlek,[num2str(i),''%finished''],handlek),',... 'i=i+1;,',... 'pause(0.05),',... 'end,',... 'pause(1.5),',... 'cla,',... 'delete(handlek),',... 'Y=rgb2ntsc(I);,',... 'J=Y(:,:,1);,',... 'imshow(J)']); b2=uicontrol('parent',h0,... 'units','points',... 'tag','b2',... 'style','pushbutton',... 'string','关闭',... 'backgroundcolor',[0.75 0.75 0.75],... 'position',[150 80 60 25],... 'callback','close');
81. MRI 数据的显示
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71load mri; D = squeeze(D); h0=figure('toolbar','none',... 'position',[198 56 450 468],... 'name','实例 81'); h1=axes('parent',h0,... 'position',[0.3 0.45 0.5 0.5],... 'visible','off'); image_num = 8; image(D(:,:,image_num)); axis image; colormap(map); x = xlim; y = ylim; b1=uicontrol('parent',h0,... 'units','points',... 'tag','b1',... 'style','pushbutton',... 'backgroundcolor',[0.75 0.75 0.75],... 'position',[50 100 60 20],... 'string','二维图',... 'callback',[... 'cla,',... 'contourslice(D,[],[],image_num),',... 'axis ij,',... 'xlim(x),',... 'ylim(y),',... 'daspect([1,1,1]),',... 'colormap(''default'')']); b2=uicontrol('parent',h0,... 'units','points',... 'tag','b2',... 'style','pushbutton',... 'backgroundcolor',[0.75 0.75 0.75],... 'position',[250 100 60 20],... 'string','三维图',... 'callback',[... 'cla,',... 'phandles = contourslice(D,[],[],[1,12,19,27],8);,',... 'view(3);,',... 'axis tight,',... 'set(phandles,''LineWidth'',2)']); b3=uicontrol('parent',h0,... 'units','points',... 'tag','b3',... 'style','pushbutton',... 'backgroundcolor',[0.75 0.75 0.75],... 'position',[50 50 60 20],... 'string','立体图',... 'callback',[... 'cla,',... 'Ds = smooth3(D);,',... 'hiso = patch(isosurface(Ds,5),''FaceColor'',[1,.75,.65],''EdgeColor'',''none'');,',... 'hcap = patch(isocaps(D,5),''FaceColor'',''interp'',''EdgeColor'',''none'');,',... 'colormap(map),',... 'view(45,30),',... 'axis tight,',... 'daspect([1,1,.4]),',... 'lightangle(45,30),',... 'lighting phong,',... 'isonormals(Ds,hiso),',... 'set(hcap,''AmbientStrength'',.6),',... 'set(hiso,''SpecularColorReflectance'',0,''SpecularExponent'',50)']); b4=uicontrol('parent',h0,... 'units','points',... 'tag','b4',... 'style','pushbutton',... 'backgroundcolor',[0.75 0.75 0.75],... 'position',[250 50 60 20],... 'string','关闭',... 'callback','close');
????效果
82. 图像类型转换
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47h0=figure('toolbar','none',... 'position',[198 56 350 468],... 'name','实例 82'); h1=axes('parent',h0,... 'position',[0.2 0.45 0.5 0.5],... 'visible','off'); load earth; clims = [10 60]; b1=uicontrol('parent',h0,... 'units','points',... 'tag','b1',... 'style','pushbutton',... 'string','强度图像',... 'position',[30 120 50 20],... 'callback',[... 'cla,',... 'imagesc(X,clims),',... 'colormap(gray)']); b2=uicontrol('parent',h0,... 'units','points',... 'tag','b2',... 'style','pushbutton',... 'string','索引图像',... 'position',[100 120 50 20],... 'callback',[... 'cla,',... 'image(X),',... 'colormap(map),',... 'axis image']); b3=uicontrol('parent',h0,... 'units','points',... 'tag','b3',... 'style','pushbutton',... 'string','真彩图像',... 'position',[170 120 50 20],... 'callback',[... 'cla,',... 'image(X),',... 'axis image']); b4=uicontrol('parent',h0,... 'units','points',... 'tag','b4',... 'style','pushbutton',... 'string','关闭',... 'position',[100 50 50 20],... 'callback','close');
????效果
83. 特殊的图像显示技术
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75h0=figure('toolbar','none',... 'position',[198 56 350 468],... 'name','实例 83'); h1=axes('parent',h0,... 'position',[0.25 0.45 0.5 0.5],... 'visible','off'); b1=uicontrol('parent',h0,... 'units','points',... 'tag','b1',... 'backgroundcolor',[0.75 0.75 0.75],... 'style','pushbutton',... 'string','颜色条',... 'position',[30 120 50 20],... 'callback',[... 'cla,',... 'I = imread("D:opencvJPEGdataIMG_20210603_185840.jpg");,',... 'imshow(I),',... 'colorbar']); b2=uicontrol('parent',h0,... 'units','points',... 'tag','b2',... 'backgroundcolor',[0.75 0.75 0.75],... 'style','pushbutton',... 'position',[100 120 50 20],... 'string','单帧显示',... 'callback',[... 'cla,',... 'load mri,',... 'imshow(D(:,:,:,7))']); b3=uicontrol('parent',h0,... 'units','points',... 'tag','b3',... 'backgroundcolor',[0.75 0.75 0.75],... 'style','pushbutton',... 'string','动画显示',... 'position',[30 60 50 20],... 'callback',[... 'cla,',... 'load mri,',... 'montage(D,map),',... 'mov=immovie(D,map);,',... 'colormap(map),',... 'movie(mov)']); b4=uicontrol('parent',h0,... 'units','points',... 'tag','b4',... 'backgroundcolor',[0.75 0.75 0.75],... 'style','pushbutton',... 'string','纹理映射',... 'position',[170 60 50 20],... 'callback',[... 'cla,',... '[x,y,z] = cylinder;,',... 'I = imread("D:opencvJPEGdataIMG_20210603_185840.jpg");,',... 'warp(x,z,y,I);']); b5=uicontrol('parent',h0,... 'units','points',... 'tag','b5',... 'backgroundcolor',[0.75 0.75 0.75],... 'style','pushbutton',... 'string','关闭',... 'position',[100 60 50 20],... 'callback','close'); b6=uicontrol('parent',h0,... 'units','points',... 'tag','b6',... 'backgroundcolor',[0.75 0.75 0.75],... 'style','pushbutton',... 'string','多帧显示',... 'position',[170 120 50 20],... 'callback',[... 'cla,',... 'load mri,',... 'montage(D,map)']);
????效果
84. 图像的几何操作
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58h0=figure('toolbar','none',... 'position',[198 56 400 468],... 'name','实例 84'); h1=axes('parent',h0,... 'position',[0.25 0.45 0.5 0.5],... 'visible','off'); I=imread("D:opencvJPEGdataIMG_20210603_185840.jpg",'jpg'); imshow(I); b1=uicontrol('parent',h0,... 'units','points',... 'tag','b1',... 'backgroundcolor',[0.75 0.75 0.75],... 'style','pushbutton',... 'string','图像旋转',... 'position',[200 120 50 20],... 'callback',[... 'cla,',... 'k=str2num(get(e1,''string''));,',... 'I=imread("D:opencvJPEGdataIMG_20210603_185840.jpg",''jpg'');,',... 'J=imrotate(I,k,''bilinear'');,',... 'imshow(J)']); b2=uicontrol('parent',h0,... 'units','points',... 'tag','b2',... 'backgroundcolor',[0.75 0.75 0.75],... 'style','pushbutton',... 'string','图像剪切',... 'position',[200 80 50 20],... 'callback',[... 'cla,',... 'imshow D:opencvJPEGdataIMG_20210603_185840.jpg,',... 'I=imcrop;,',... 'imshow(I)']); b3=uicontrol('parent',h0,... 'units','points',... 'tag','b3',... 'backgroundcolor',[0.75 0.75 0.75],... 'style','pushbutton',... 'string','关闭',... 'position',[120 30 50 20],... 'callback','close'); e1=uicontrol('parent',h0,... 'units','points',... 'tag','e1',... 'backgroundcolor',[0.75 0.75 0.75],... 'style','edit',... 'horizontalalignment','right',... 'position',[50 80 100 20]); t1=uicontrol('parent',h0,... 'units','points',... 'tag','t1',... 'backgroundcolor',[0.75 0.75 0.75],... 'style','text',... 'string','请输入旋转角度（0～90）度',... 'fontsize',12,... 'position',[40 100 130 20]);
????效果
最后
以上就是仁爱鸭子最近收集整理的关于【MATLAB100个实用小技巧】——图形处理(76-84)前言系列文章76. 交换显示图像77. 矢量数据的显示78. 图像分析（2）79. 图像逻辑操作80. 进度条的使用81. MRI 数据的显示82. 图像类型转换83. 特殊的图像显示技术84. 图像的几何操作的全部内容，更多相关【MATLAB100个实用小技巧】——图形处理(76-84)前言系列文章76.内容请搜索靠谱客的其他文章。
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