Hello, @shashiakk
I have investigated attached files. Reason for incorrect recognition result - is different rotation of bottom and top halves of the page
See attachment below. Left is “Wrong-2.pdf”, right is “Correct.pdf”.
wrong_2-correct.jpg (227,6 КБ)
Top half of the “Wrong-2.pdf” scan rotated disproportionate to bottom half. “Correct.pdf” does not have this issue and produce perfect results.
In most cases it means malfunction in scanning equipment(e.g. ADF). Usually it is not an issue with the documents, but in Optical Mark recognition forms it will produce false positive results.
I can advise increasing the size of the recognizable elements (bubbles) to try to mitigate these fluctuations.
It is an interesting case. I will add investigation for this issue in development queue.