how to convert jpeg images to pgm format...can someone help

5 views (last 30 days)
this is my code
prompt={'compare'}; title='IMAGE INPUT'; ans=inputdlg(prompt,title); if ~isempty(ans{1}) r1 = str2num(ans{1}); if isempty(r1) ri =round (400*rand(1,1)); end end
r=w(:,r1); v=w(:,[1:r1-1 r1+1:end]); N=20; O=uint8(ones(1,size(v,2))); m=uint8(mean(v,2)); vzm=v-uint8(single(m)*single(O)); L=single(vzm)'*single(vzm); [V,D]=eig(L); V=single(vzm)*V; V=V(:,end:-1:end-(N-1));
cv=zeros(size(v,2),N); for i=1:size(v,2); cv(i,:)=single(vzm(:,i))'*V; end
subplot(121); imshow(reshape(r,112,92)); title('Looking for ...','FontWeight','bold','Fontsize',16,'color','red');
subplot(122); p=r-m; s=single(p)'*V; z=[]; for i=1:size(v,2) z=[z,norm(cv(i,:)-s,2)]; if(rem(i,20)==0),imshow(reshape(v(:,i),112,92)),end; drawnow; end
[a,i]=min(z); subplot(122); imshow(reshape(v(:,i),112,92));title('Found!','FontWeight','bold','Fontsize',16,'color','red');

Accepted Answer

ChristianW on 1 Mar 2013
X = imread('ngc6543a.jpg');

More Answers (0)


Find more on Convert Image Type in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!