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| function [I]=zoom_function(I,upperleft_pixel,box,zoomfactor,zoom_position,nline) | |
| y = upperleft_pixel(1); | |
| x = upperleft_pixel(2); | |
| box1 = box(1); | |
| box2 = box(2); %4 | |
| s_color = [0 255 0]; | |
| l_color = [255 0 0]; | |
| [~, ~, hw] = size( I ); | |
| if hw == 1 | |
| I=repmat(I,[1,1,3]); | |
| end | |
| Imin = I(x:x+box1-1,y:y+box2-1,:); | |
| I(x-nline:x+box1-1+nline,y-nline:y+box2-1+nline,1) = s_color(1); | |
| I(x-nline:x+box1-1+nline,y-nline:y+box2-1+nline,2) = s_color(2); | |
| I(x-nline:x+box1-1+nline,y-nline:y+box2-1+nline,3) = s_color(3); | |
| I(x:x+box1-1,y:y+box2-1,:) = Imin; | |
| Imax = imresize(Imin,zoomfactor,'nearest'); | |
| switch lower(zoom_position) | |
| case {'uper_left','ul'} | |
| I(1:2*nline+zoomfactor*box1,1:2*nline+zoomfactor*box2,1) = l_color(1); | |
| I(1:2*nline+zoomfactor*box1,1:2*nline+zoomfactor*box2,2) = l_color(2); | |
| I(1:2*nline+zoomfactor*box1,1:2*nline+zoomfactor*box2,3) = l_color(3); | |
| I(1+nline:zoomfactor*box1+nline,1+nline:zoomfactor*box2+nline,:) = Imax; | |
| case {'uper_right','ur'} | |
| I(1:2*nline+zoomfactor*box1,end-2*nline-zoomfactor*box2+1:end,1) = l_color(1); | |
| I(1:2*nline+zoomfactor*box1,end-2*nline-zoomfactor*box2+1:end,2) = l_color(2); | |
| I(1:2*nline+zoomfactor*box1,end-2*nline-zoomfactor*box2+1:end,3) = l_color(3); | |
| I(1+nline:zoomfactor*box1+nline,end-nline-zoomfactor*box2+1:end-nline,:) = Imax; | |
| case {'lower_left','ll'} | |
| I(end-2*nline-zoomfactor*box1+1:end,1:2*nline+zoomfactor*box2,1) = l_color(1); | |
| I(end-2*nline-zoomfactor*box1+1:end,1:2*nline+zoomfactor*box2,2) = l_color(2); | |
| I(end-2*nline-zoomfactor*box1+1:end,1:2*nline+zoomfactor*box2,3) = l_color(3); | |
| I(end-nline-zoomfactor*box1+1:end-nline,1+nline:zoomfactor*box2+nline,:) = Imax; | |
| case {'lower_right','lr'} | |
| I(end-2*nline-zoomfactor*box1+1:end,end-2*nline-zoomfactor*box2+1:end,1) = l_color(1); | |
| I(end-2*nline-zoomfactor*box1+1:end,end-2*nline-zoomfactor*box2+1:end,2) = l_color(2); | |
| I(end-2*nline-zoomfactor*box1+1:end,end-2*nline-zoomfactor*box2+1:end,3) = l_color(3); | |
| I(end-nline-zoomfactor*box1+1:end-nline,end-nline-zoomfactor*box2+1:end-nline,:) = Imax; | |
| end | |