MATLAB and Simulink resources for Arduino, LEGO, and Raspberry Pi

Learn moreOpportunities for recent engineering grads.

Apply Today
Asked by FIR on 14 Feb 2013

I have the folowing code ,plz tell how to save the circled image

k is my image

function [x1 y1 r ] = circle_saptha4(k)

ok = 0; nim = k; while ok~=1 % figure; imshow(nim); pt = ginput(2)

x1 = pt(1,1); y1 = pt(1,2); x2 = pt(2,1); y2 = pt(2,2); xpt = [x1 x2]; ypt = [y1 y2]; %line(x,y); % Enablw this for draw rectangle on circle

r = sqrt((x2-x1)^2 + (y2-y1)^2)

pp=rsmak('circle',r,[x1 y1]); % figure; % imshow(k) fnplt(pp); line(xpt,ypt);

xtl = x1-r; xtr = x1+r; xbl = x1-r; xbr = x1+r;

ytl = y1+r; ytr = y1+r; ybl = y1-r; ybr = y1-r;

x = [xtl xtr xbr xbl xtl]; y = [ytl ytr ybr ybl ytl]; %line(x,y);

for i=1:size(k,1) for j=1:size(k,2) x2 = j; y2 = i; val = floor(sqrt((x2-x1)^2 + (y2-y1)^2)); if(val == floor(r)) nim(i,j,1) = 255; nim(i,j,2) = 0; nim(i,j,3) = 0;

% else % nim(i,j,1) = k(i,j,1); % nim(i,j,2) = k(i,j,2); % nim(i,j,3) = k(i,j,3); % end end end

ok = (menu('Do u want to draw another circle?','No','Yes')==1)

% hold on end end

*No products are associated with this question.*

Answer by Image Analyst on 16 Feb 2013

Accepted answer

Why not use rectangle() to draw the circles into the overlay, then use export_fig (from the File Exchange) to save the image with the circles written into the image?

Answer by Thorsten on 14 Feb 2013

imwrite(nim, 'newimage.png');

Show 3 older comments

Walter Roberson on 16 Feb 2013

You didn't answer my first question

Are you saying that the entire output image consists of (255,255,255) RGB triples ?

Also I notice that your outputs are x1, y1, r, but not nim, and that you do not display nim ?

FIR on 18 Feb 2013

i have imshow(nim) so image is displayed ,by calling this function,i dont know what u mean by RGB triples

Walter Roberson on 18 Feb 2013

Why do you change nim after you display it?

Why do you return x1 y1 only for the *newest* circle, instead of for all circles? You never even displayed that newest circle on the drawing.

What is your reason for saying "I did it but it writes only 256" ? What writes only 256 ?

Answer by dsfds on 14 May 2013

Edited by dsfds on 14 May 2013

wanna know how to how to save images to different formats in c#

check here http://www.rasteredge.com/how-to/csharp-imaging/imaging-saving-printing/

## 0 Comments