这篇教程MATLAB 全景图切割及盒图显示的实现步骤写得很实用，希望能帮到您。
part1 全景图切割原图： 
切割效果： 
以下是切割部分步骤：
举这张图为例，图片格式hdr,jpg啥的都行： 
1.1 边缘剔除有些全景图会自带白灰色边缘，若是直接进行切割便会出现如下效果： 
这时候我们首先要对原图进行白边剔除，代码如下： oriPic=imread('test.hdr');[rows,cols,~]=size(oriPic);for i=cols:-1:1 tempListR=oriPic(floor(rows/4):ceil(3*rows/4),i,1); tempListG=oriPic(floor(rows/4):ceil(3*rows/4),i,1); tempListB=oriPic(floor(rows/4):ceil(3*rows/4),i,1); if all(round(tempListR-mean(tempListR))==0)&&all(tempListR==tempListG)&&all(tempListR==tempListB) oriPic(:,i,:)=[]; else break; endendoriPic=oriPic(:,end:-1:1,:);for i=size(oriPic,2):-1:1 tempListR=oriPic(floor(rows/4):ceil(3*rows/4),i,1); tempListG=oriPic(floor(rows/4):ceil(3*rows/4),i,1); tempListB=oriPic(floor(rows/4):ceil(3*rows/4),i,1); if all(round(tempListR-mean(tempListR))==0)&&all(tempListR==tempListG)&&all(tempListR==tempListB) oriPic(:,i,:)=[]; else break; endendoriPic=oriPic(:,end:-1:1,:);for i=rows:-1:1 tempListR=oriPic(i,floor(cols/4):ceil(3*cols/4),1); tempListG=oriPic(i,floor(cols/4):ceil(3*cols/4),1); tempListB=oriPic(i,floor(cols/4):ceil(3*cols/4),1); if all(round(tempListR-mean(tempListR))==0)&&all(tempListR==tempListG)&&all(tempListR==tempListB) oriPic(i,:,:)=[]; else break; endendoriPic=oriPic(end:-1:1,:,:);for i=size(oriPic,1):-1:1 tempListR=oriPic(i,floor(cols/4):ceil(3*cols/4),1); tempListG=oriPic(i,floor(cols/4):ceil(3*cols/4),1); tempListB=oriPic(i,floor(cols/4):ceil(3*cols/4),1); if all(round(tempListR-mean(tempListR))==0)&&all(tempListR==tempListG)&&all(tempListR==tempListB) oriPic(i,:,:)=[]; else break; endendoriPic=oriPic(end:-1:1,:,:);
1.2 图像裁剪我们要让完成的就是如下的变换和裁剪： 
这部分其实已经有较为成熟的原理和代码：
代码参考：https://stackoverflow.com/questions/29678510/convert-21-equirectangular-panorama-to-cube-map 原理参考：
http://paulbourke.net/panorama/cubemaps/#1 http://paulbourke.net/panorama/cubemaps/ 原理参考文章中更加清晰的变化图： 
另：
在参考代码的基础上，对映射像素进行了插值处理，可以使图像更加平滑，原理如下： 
主要函数代码： function resultPic=createCubeMapFace(oriPic,id,height,width) [M,N,~]=size(oriPic); resultPic=zeros([height,width,3]); an=sin(pi/4); ak=cos(pi/4); faceTransform=[0,0; pi/2,0; pi,0; -pi/2,0; 0,-pi/2; 0,pi]; ftu=faceTransform(id,1); ftv=faceTransform(id,2); for y=0:height-1 for x=0:width-1 nx=y/height-0.5; ny=x/width-0.5; nx=nx*2*an; ny=ny*2*an; if (ftv == 0) u=atan2(nx, ak); v=atan2(ny*cos(u),ak); u=u+ftu; elseif(ftv>0) d=sqrt(nx*nx+ny*ny); v=pi/2-atan2(d,ak); u=atan2(ny,nx); else d=sqrt(nx*nx+ny*ny); v=-pi/2+atan2(d,ak); u=atan2(-ny,nx); end u=u/(pi); v=v/(pi/2); while(v<-1) v=v+2; u=u+1; end while(v>1) v=v-2; u=u+1; end while(u<-1) u=u+2; end while(u>1) u=u-2; end u=u/2+0.5; v=v/2+0.5; u=u*(N-1)+1; v=v*(M-1)+1; fv=floor(v);fv1=floor(v)+1;pv=v-fv;fv1(fv1>M)=M; fu=floor(u);fu1=floor(u)+1;pu=u-fu;fu1(fu1>N)=N; resultPic(x+1,y+1,:)=double(oriPic(fv,fu,:)).*(1-pv).*(1-pu)+... double(oriPic(fv1,fu,:)).*(pv).*(1-pu)+... double(oriPic(fv,fu1,:)).*(1-pv).*(pu)+... double(oriPic(fv1,fu1,:)).*(pv).*(pu); end end resultPic=uint8(resultPic);end 函数调用及图像存储：
这里后面长宽数值可以任意设定，但是要求长宽数值一致，如果按照当前写法，结果被存储至result文件夹： if ~exist('result','dir') mkdir('result');endfor i=1:6 resultPic=createCubeMapFace(oriPic,i,500,500); figure(i) imshow(resultPic) imwrite(resultPic,['result/',num2str(i),'.jpg'])end另： 如图所示
图片序号[1,2,3,4,5,6]分别对应图片[右，后，左，前，上，下] 
1.3 完整代码function panoramic2boxoriPic=imread('889027-884424860.jpg');[rows,cols,~]=size(oriPic);for i=cols:-1:1 tempListR=oriPic(floor(rows/4):ceil(3*rows/4),i,1); tempListG=oriPic(floor(rows/4):ceil(3*rows/4),i,1); tempListB=oriPic(floor(rows/4):ceil(3*rows/4),i,1); if all(round(tempListR-mean(tempListR))==0)&&all(tempListR==tempListG)&&all(tempListR==tempListB) oriPic(:,i,:)=[]; else break; endendoriPic=oriPic(:,end:-1:1,:);for i=size(oriPic,2):-1:1 tempListR=oriPic(floor(rows/4):ceil(3*rows/4),i,1); tempListG=oriPic(floor(rows/4):ceil(3*rows/4),i,1); tempListB=oriPic(floor(rows/4):ceil(3*rows/4),i,1); if all(round(tempListR-mean(tempListR))==0)&&all(tempListR==tempListG)&&all(tempListR==tempListB) oriPic(:,i,:)=[]; else break; endendoriPic=oriPic(:,end:-1:1,:);for i=rows:-1:1 tempListR=oriPic(i,floor(cols/4):ceil(3*cols/4),1); tempListG=oriPic(i,floor(cols/4):ceil(3*cols/4),1); tempListB=oriPic(i,floor(cols/4):ceil(3*cols/4),1); if all(round(tempListR-mean(tempListR))==0)&&all(tempListR==tempListG)&&all(tempListR==tempListB) oriPic(i,:,:)=[]; else break; endendoriPic=oriPic(end:-1:1,:,:);for i=size(oriPic,1):-1:1 tempListR=oriPic(i,floor(cols/4):ceil(3*cols/4),1); tempListG=oriPic(i,floor(cols/4):ceil(3*cols/4),1); tempListB=oriPic(i,floor(cols/4):ceil(3*cols/4),1); if all(round(tempListR-mean(tempListR))==0)&&all(tempListR==tempListG)&&all(tempListR==tempListB) oriPic(i,:,:)=[]; else break; endendoriPic=oriPic(end:-1:1,:,:);% =========================================================================if ~exist('result','dir') mkdir('result');endfor i=1:6 resultPic=createCubeMapFace(oriPic,i,500,500); figure(i) imshow(resultPic) imwrite(resultPic,['result/',num2str(i),'.jpg'])end% =========================================================================function resultPic=createCubeMapFace(oriPic,id,height,width) [M,N,~]=size(oriPic); resultPic=zeros([height,width,3]); an=sin(pi/4); ak=cos(pi/4); faceTransform=[0,0; pi/2,0; pi,0; -pi/2,0; 0,-pi/2; 0,pi]; ftu=faceTransform(id,1); ftv=faceTransform(id,2); for y=0:height-1 for x=0:width-1 nx=y/height-0.5; ny=x/width-0.5; nx=nx*2*an; ny=ny*2*an; if (ftv == 0) u=atan2(nx, ak); v=atan2(ny*cos(u),ak); u=u+ftu; elseif(ftv>0) d=sqrt(nx*nx+ny*ny); v=pi/2-atan2(d,ak); u=atan2(ny,nx); else d=sqrt(nx*nx+ny*ny); v=-pi/2+atan2(d,ak); u=atan2(-ny,nx); end u=u/(pi); v=v/(pi/2); while(v<-1) v=v+2; u=u+1; end while(v>1) v=v-2; u=u+1; end while(u<-1) u=u+2; end while(u>1) u=u-2; end u=u/2+0.5; v=v/2+0.5; u=u*(N-1)+1; v=v*(M-1)+1; fv=floor(v);fv1=floor(v)+1;pv=v-fv;fv1(fv1>M)=M; fu=floor(u);fu1=floor(u)+1;pu=u-fu;fu1(fu1>N)=N; resultPic(x+1,y+1,:)=double(oriPic(fv,fu,:)).*(1-pv).*(1-pu)+... double(oriPic(fv1,fu,:)).*(pv).*(1-pu)+... double(oriPic(fv,fu1,:)).*(1-pv).*(pu)+... double(oriPic(fv1,fu1,:)).*(pv).*(pu); end end resultPic=uint8(resultPic);endend
1.4 其他几组切割结果图片源自：https://www.cgmodel.com/article/9004.html 
part2 盒图展示
2.1 曲面绘制使用surf绘制各个曲面后，并为各个曲面贴图： for i=1:6 oriPic.(['p',num2str(i)])=imread(['result/',num2str(i),'.jpg']); end[rows,cols,~]=size(oriPic.p1);[baseXY,baseZ]=meshgrid(1:cols,rows:-1:1);ax=gca;hold(ax,'on')surf(baseXY(:,end:-1:1)-(1+rows)/2,-(rows-1)./2.*ones(size(baseXY)),baseZ,'CData',oriPic.p1,'EdgeColor','none','FaceColor','interp')surf(-(rows-1)./2.*ones(size(baseXY)),baseXY-(1+rows)/2,baseZ,'CData',oriPic.p2,'EdgeColor','none','FaceColor','interp')surf(baseXY-(1+rows)/2,(rows-1)./2.*ones(size(baseXY)),baseZ,'CData',oriPic.p3,'EdgeColor','none','FaceColor','interp')surf((rows-1)./2.*ones(size(baseXY)),baseXY(:,end:-1:1)-(1+rows)/2,baseZ,'CData',oriPic.p4,'EdgeColor','none','FaceColor','interp')surf(baseXY'-(1+rows)/2,baseXY-(1+rows)/2,ones(size(baseXY)),'CData',oriPic.p6(end:-1:1,end:-1:1,:),'EdgeColor','none','FaceColor','interp')surf(baseXY'-(1+rows)/2,baseXY-(1+rows)/2,rows-1+ones(size(baseXY)),'CData',oriPic.p5(:,end:-1:1,:),'EdgeColor','none','FaceColor','interp') 
2.2 视角调整通过设置axes属性将视角调整至盒子里面 ax=axes('parent',fig,'position',[-0.45 -0.45 1.9 1.9]);hold(ax,'on')ax.ZLim=[0,rows+1];ax.XLim=[0-(1+rows)/2,rows+1-(1+rows)/2];ax.YLim=[0-(1+rows)/2,rows+1-(1+rows)/2];ax.Color=[0 0 0];ax.CameraPosition=[0,0,rows/2];ax.CameraPositionMode='manual';ax.DataAspectRatio=[1,1,1];ax.DataAspectRatioMode='manual';ax.Projection='perspective';ax.CameraTargetMode='manual';ax.CameraViewAngle = 7;ax.View=[-2.7391 90.0000];ax.CameraTarget=[0 0 (rows-1)/2];ax.Toolbar.Visible='on';运行后点击那个三位旋转按钮即可开始漫游 
此时的盒图是无缝隙版本，有缝隙版放在后面 
2.3 完整代码无缝隙版： function showBoxfor i=1:6 oriPic.(['p',num2str(i)])=imread(['result/',num2str(i),'.jpg']); end[rows,cols,~]=size(oriPic.p1);[baseXY,baseZ]=meshgrid(1:cols,rows:-1:1);fig=figure('units','pixels','position',[300 80 500 500],... 'Numbertitle','off','menubar','none','resize','off',... 'name','box'); ax=axes('parent',fig,'position',[-0.45 -0.45 1.9 1.9]);hold(ax,'on')ax.ZLim=[0,rows+1];ax.XLim=[0-(1+rows)/2,rows+1-(1+rows)/2];ax.YLim=[0-(1+rows)/2,rows+1-(1+rows)/2];ax.Color=[0 0 0];ax.CameraPosition=[0,0,rows/2];ax.CameraPositionMode='manual';ax.DataAspectRatio=[1,1,1];ax.DataAspectRatioMode='manual';ax.Projection='perspective';ax.CameraTargetMode='manual';ax.CameraViewAngle = 7;ax.View=[-2.7391 90.0000];ax.CameraTarget=[0 0 (rows-1)/2];ax.Toolbar.Visible='on';surf(baseXY(:,end:-1:1)-(1+rows)/2,-(rows-1)./2.*ones(size(baseXY)),baseZ,'CData',oriPic.p1,'EdgeColor','none','FaceColor','interp')surf(-(rows-1)./2.*ones(size(baseXY)),baseXY-(1+rows)/2,baseZ,'CData',oriPic.p2,'EdgeColor','none','FaceColor','interp')surf(baseXY-(1+rows)/2,(rows-1)./2.*ones(size(baseXY)),baseZ,'CData',oriPic.p3,'EdgeColor','none','FaceColor','interp')surf((rows-1)./2.*ones(size(baseXY)),baseXY(:,end:-1:1)-(1+rows)/2,baseZ,'CData',oriPic.p4,'EdgeColor','none','FaceColor','interp')surf(baseXY'-(1+rows)/2,baseXY-(1+rows)/2,ones(size(baseXY)),'CData',oriPic.p6(end:-1:1,end:-1:1,:),'EdgeColor','none','FaceColor','interp')surf(baseXY'-(1+rows)/2,baseXY-(1+rows)/2,rows-1+ones(size(baseXY)),'CData',oriPic.p5(:,end:-1:1,:),'EdgeColor','none','FaceColor','interp')end
有缝隙版： function showBox2for i=1:6 oriPic.(['p',num2str(i)])=imread(['result/',num2str(i),'.jpg']); end[rows,cols,~]=size(oriPic.p1);[baseXY,baseZ]=meshgrid(1:cols,rows:-1:1);fig=figure('units','pixels','position',[300 80 500 500],... 'Numbertitle','off','menubar','none','resize','off',... 'name','box'); ax=axes('parent',fig,'position',[-0.45 -0.45 1.9 1.9]);hold(ax,'on')ax.ZLim=[0,rows+1];ax.XLim=[0-(1+rows)/2,rows+1-(1+rows)/2];ax.YLim=[0-(1+rows)/2,rows+1-(1+rows)/2];ax.Color=[0 0 0];ax.CameraPosition=[0,0,rows/2];ax.CameraPositionMode='manual';ax.DataAspectRatio=[1,1,1];ax.DataAspectRatioMode='manual';ax.Projection='perspective';ax.CameraTargetMode='manual';ax.CameraViewAngle = 7;ax.View=[-2.7391 90.0000];ax.CameraTarget=[0 0 (rows+1)/2];ax.Toolbar.Visible='on';surf(baseXY(:,end:-1:1)-rows/2,-rows./2.*ones(size(baseXY)),baseZ,'CData',oriPic.p1,'EdgeColor','none','FaceColor','interp')surf(-rows./2.*ones(size(baseXY)),baseXY-(1+rows)/2,baseZ,'CData',oriPic.p2,'EdgeColor','none','FaceColor','interp')surf(baseXY-(1+rows)/2,rows./2.*ones(size(baseXY)),baseZ,'CData',oriPic.p3,'EdgeColor','none','FaceColor','interp')surf(rows./2.*ones(size(baseXY)),baseXY(:,end:-1:1)-(1+rows)/2,baseZ,'CData',oriPic.p4,'EdgeColor','none','FaceColor','interp')surf(baseXY'-(1+rows)/2,baseXY-(1+rows)/2,zeros(size(baseXY)),'CData',oriPic.p6(end:-1:1,end:-1:1,:),'EdgeColor','none','FaceColor','interp')surf(baseXY'-(1+rows)/2,baseXY-(1+rows)/2,rows+ones(size(baseXY)),'CData',oriPic.p5(:,end:-1:1,:),'EdgeColor','none','FaceColor','interp')end
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