Auto trace / bitmap to vector solution for PHP

[cityguru]

I am looking for a solution which will allow a user to visit my website and be able to import a floorplan, then I would like to convert the floor plan into a vector image using something like AutoTrace http://sourceforge.net/projects/autotrace/ but it seems to just be a windows client.

Is there any PHP with or without AJAX which would allow me to do the above?

Additionally i am also looking for a good solution which will allow users to create Vector objects which will a person to draw lines and boxes. i want the user online to be able to create a floorplan on the fly and submit it to me.

Any suggestions would be really appreciated.

Thanks in advance

[dagon]

sounds like a job for flash.

[cityguru]

I am not opposed to Flash but how would i do this in Flash?