How to make an image editor using matlab

I want to make a simple image editor using matlab.I want to design a GUI for it on matlab that provides sliders to adjust brightness and sharpness.Also it provides an option to add three basic filters to the images(Black and White,Sepia and Negative)but it could be any other 3 as well.What steps should I take to accomplish this task?(links and guidelines would be appreciated)

Answer 1

[Image Analyst]

This will give you a quick start: http://www.mathworks.com/matlabcentral/fileexchange/24224-magic-matlab-generic-imaging-component

[Bilal Athar]

Thanks.I will check it out.Do you think the filters that I mentioned in the question are simple and practical enough for matlab?

[Image Analyst]

Yes, all the things you mentioned are really easy with intlut(), ind2rgb(), conv2(), imfilter(), etc.

[Rossana Parada]

I used this code for black and white, it worked for me. global im imbw=im2bw(im,.57); axes(handles.axes2); imshow(imbw);

[Image Analyst]

There is no built-in sepia colormap. Either try copper or pink, or make your own. Rossana, the im2bw() operation you mentioned does not adjust contrast and brightness or change colormaps, the two things Bilal asked for. One function I did not mention earlier that might be helpful is imadjust().