added some parameters to matlab version (alpha, str-tex, use cuda pyramids...), adapted mex & c++ code accordingly
added some parameters to matlab version (alpha, str-tex, use cuda pyramids...), adapted mex & c++ code accordingly

git-svn-id: 53a346f67f76028cd3290d0c97fdb7682ad2a994@11521 358b74ad-2626-0410-af80-f4c3c349ae55

mwerlberger/imp,mwerlberger/imp,mwerlberger/imp,mwerlberger/imp