[Quexf-discuss] border detect

[Mauro P. <mau...@gm...>]

Dear Adam Z
dears queX suite users and devels

(first of all, im really sorry about my english, i hope you can understand
me..)

im currently working on a customization of quexf.

Actually i produce a custom pdf and a custom related xml banding, but im not
sure my issue could be about that, as long as i respect "the rules" quexf
wants to detect pages and so on.

It happens that sometimes the border cannot be detected the right way, any
of you find the same issue?

In the meantime i start to think and try a new way to detect borders, not
sure could be interesting but let me explain.

First of all i notice some input device scale the real document in a way i
cannot control (maybe due to a "lowfi" hardware dont know), sometimes this
makes original "mapped" area to not match at all the borders.

I am considering to change the source code in the image "library", im
talking about the vertical and horizontal line detection.

i start to think to change it as follow:

the detection should start at the really (paper) corners (to be clear: top
left detection start at 0,0) and to fill a matrix from 0,0 to X,Y.. X,Y that
should be far from the printed border.

I collect every pixel in that area (imagecolorat .... ) and then study
something like density or something that can remember about density.

For istance, i got to vectors, the first is the sum of every pixel for every
x point, and the second the same but about y points.

Suppose to get the average, the difference between every sum in the vectors
and the average should be less than zero near the line we are looking for,
the value in the middle of the range should be the x point of the corner.
 i hope to be clear ^^


thank you

-- 
> m.Api <