Re: was comparing 2 images

[Buzz Kettles]

At 2:31 PM -0300 3/10/03, you wrote:
Buzz,

but this will return only a geral difference, and I need to know one by one
in the checkboxes.
test each checkbox separately?

& to get around any scanning anomalies, you could drop them all to 1 
bit graphics (w/dither = OFF) & then do the compare

However, if then a spec of dirt on a scan ends up triggering errors, then I'd

get the image of the checkbox to be tested
drop it to 1 bit (w/dither = OFF)
run through the pixels using getPixel & accumulating a total -
pick a threshold & if it totals above that, then it's been marked.
hth
-Buzz




on 3/10/03 1:37 PM, Buzz Kettles at [EMAIL PROTECTED] wrote:

 At 11:25 AM -0300 3/10/03, you wrote:
 Hi,

 I think my previous post need a little o Vulcan's Logic :-)

 I don't need to compare two images but confirm if the checkbox is filled or
 not. For example, someone fill a test and then I scan the page and check
 throw the checkboxes for it answers and returns that was filled, so I can
 compute if the answer is right or not.
 Any Ideas??
 I believe that you can use imaging lingo & compare the images

 s = member("empty checkbox").image
 t = member("marked checkbox").image
 if (s <> t) then
 isMarked()
 end if


 Thank's

 Rodrigo

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