Matlab program to remove constant back ground

Ian new to matlab.I need to remove the background to the image.i used below code but i did not get result. function [im]=RemoveBackground(I,Ib) I=imread('C:/Users/user/11.jpg'); figure(1),imshow(I) Ib=imread('C:/Users/user/10.jpg'); figure(2),imshow(Ib) % Ib=background image % I=input image % im=background removed image I1=rgb2gray(I); Ib1=rgb2gray(Ib); Id=imsubtract(Ib1,I1); Id=Id; Id=bwareaopen(Id,500,8); Id=imfill(Id,'holes'); Id=uint8(Id); [r c]=size(Id); for i=1:r for j=1:c if Id(i,j)==255 Id(i,j)=1; end end end im(:,:,1)=I(:,:,1).*Id; im(:,:,2)=I(:,:,2).*Id; im(:,:,3)=I(:,:,3).*Id;

figure(3),imshow(im);

end
pls help to me sir

[Image Analyst]

Where's your image?

Here's some help: http://www.mathworks.com/matlabcentral/answers/728-how-do-i-write-a-good-question-for-matlab-answers

http://www.mathworks.com/matlabcentral/answers/13205-tutorial-how-to-format-your-question-with-markup