"Ashutosh Kanodia" <As******@suviinfo.com> wrote in message
news:u8****************@TK2MSFTNGP10.phx.gbl...
hi all
i am facing a problem i want to read a BMP File which is basically a Ans
sheet of some exam and in to that student will fill the circle with the
pencil and i am getting the scaned images in the bmp format i want to read
those images and put the values in to the Database.
if any body help that will work me a lots.
thanks
ashutosh K
I think that you will need to do something like this:
- identify special marks on the image
- use the location of those to correct the image (rotate (180 degrees or
slightly), scale, shift)
- compare the original (blank) scanned form with the filled-in form
- from the location of the differences (should be the marked options),
identify the option marked
- or: compare regions where a mark could exist
The first two steps are inserted to overcome the scanning-problems
(insert document wrong side up, not quite aligned with paper-stops etc.).
Without those steps you will only find differences!
Good luck, I fear you will need it!
Hans Kesting