image stitching

hii..for image sitching,i found out the registration parameters(translational and rotational)using phase correlation...the next step is to create a canvas of the 2 images,which i am unable to do..please any one give me any idea..thanx in advance..

Answer 1

[Jeff E]

The approach I take is to pre-allocate the final image, then just "drop in" the image data in the appropriate locations. This works for regular tiling, including translation. I've never had occasion to apply a rotation, but hopefully this is applicable. Perhaps use imrotate on the tiles before trying to add...

fullmask(ttop : tbottom , tleft : tright , :) = imadd(fullmask(ttop : tbottom , tleft : tright , :), temp_img) ;

Where fullmask is your final image, and ttop, tbottom, tleft, and tright are the coordinate extremes of the image to be added. Such that if you had a 100x100 pixel image to add in the upper left corner, ttop = 1, tbottom = 101, etc.

Answer 2

[Image Analyst]

You can see how that's done in Stitch:

http://www.mathworks.com/matlabcentral/fileexchange/25797-stitch