Combine cropped portions of an image

I have cropped certain portions (2 or 3 cropped rectangles) of an image and applied image processing algorithm. After image processing, Is there a way to combine those portions in a white background to make it as a new image.

[Walter Roberson]

http://www.mathworks.co.uk/matlabcentral/answers/43073-a-guide-to-tags

Answer 1

[Image Analyst]

See my copy and paste demos. They show you how to paste one image onto another at a specified location.