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Asked by senthil kumar
on 9 Oct 2012

i convert an image is boundary format but it can display plot format. i am using saveas command function only display in out side of matlab .i am using imshow does not show anything.please help me how to store image in matlab readable format.

and how can i get x,y coordinate values boundary B{k}

clear; close all; i1=imread('76.jpg'); i1=rgb2gray(i1); i2=im2bw(i1,.4); i2= wiener2(i2,[5 5]); i2=imfill(i2,'holes'); %i2=~i2; m=bwperim(i2);figure,imshow(m); e=length(B); labeledImage = bwlabel(i2, 8); blobMeasurements = regionprops(labeledImage, i1, 'all'); imshow(i2) hold on set(gcf, 'Position', get(0, 'ScreenSize')); for k = 1:e boundary = B{k}; plot(boundary(:,2), boundary(:,1), 'g', 'LineWidth', 0.2) end

***%i get this plot format. please help how to convert into matlab readable format because i can not do next processing***

Answer by Walter Roberson
on 9 Oct 2012

Perhaps you want to poly2roi() ?

Walter Roberson
on 9 Oct 2012

[x,y] coordinate values for the boundary are already in B{k} for each k.

If you want the all together in one array, but without any indication of where any of the boundaries ends, use

vertcat(B{:})

Answer by senthil kumar
on 9 Oct 2012

if true just save separate and the object.please help me end

Answer by Image Analyst
on 10 Oct 2012

You never defined B. It looks like it should have come from a call to bwboundaries(i2). See my tutorial for an example: http://www.mathworks.com/matlabcentral/fileexchange/25157-image-segmentation-tutorial-blobsdemo

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