A big Problem

  • Thread starter Thread starter Ashutosh Kanodia
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Ashutosh Kanodia

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
 
Ashutosh Kanodia said:
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
Click to expand...

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
 
Ooooh you get all the fun jobs.. Have fun :D


Be sure to keep us updated *sits back with popcorn*
 
I suggest you specify have the form in black and white and make them use a
different colour then you can detect the colour range.
Or Is there any key marks to identify on the form then you can have a db of
stored shapes and use those, reference points, then check for a change on
that from the base unmodified image.
 
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