First build with automatic dewarping

[Tulon]

Here is the build: http://depositfiles.com/files/r15711m4c
There are still some rough edges, but automatic dewarping itself seems to work well.

Note: don't use this build - it crashes on pages with little or no text. There is a newer build later in this thread.

Without dewarping

without_dewarping.jpg (96.86 KiB) Viewed 7120 times

Automatic dewarping

with_dewarping.jpg (89.29 KiB) Viewed 7120 times

P.S: Up to date source code is in Git.

[Shaknum]

Tulon, this is amazing. The quality of this feature is unsurpassed, I don't know how you do it. I've been trying this out on some scans I've been saving for a while, expectantly awaiting this mile stone, and I've had a lot of success with them. You will probably be getting a lot of these types of messages in the near future, and I don't feel entitled to any response, however if this is useful to you I thought I'd share one of the tricky images I have, that you are likely to have difficulty with in the future. As you can see in the following picture:

Auto Dewarp Difficulty

There is some difficulty when the end of the last line of text is indented, this causes the image to dewarp into a trapeziod. Anyway, thanks for the fantastic work, this thing is really robust. I hope the above image is helpful to you, and not a pain in the butt. Let me know if you want the source image. Thanks again.

[Tulon]

There is some difficulty when the end of the last line of text is indented, this causes the image to dewarp into a trapeziod.

Normally that's not a problem, provided the vertical boundaries got detected correctly. On the next tab in debugging mode, you would see those blue lines extended up to the vertical boundaries. If the vertical boundaries got detected incorrectly, or if it still somehow produces a trapezoid, I can take a look if you provide me with the source scan.

BTW, multicolumn text is not supported by this algorithm. The reason it works in this particular case is that text lines in your columns are aligned and close together.

[Hamid]

Oh my god! That's a nice present for us Tulon. Thank you so much.

[ibr4him]

Re-he-heally awesome!

Will just wait for someone to build a Mac version.

Thanks a ton, Tulon.

[bnz]

Indeed. Very awesome. I too hope that a binary Mac version comes along somehow. I had some success building it on my own, but somehow the jpeg import was broken then.

[knappen]

Ah, great!

I thought that you had given up completing this.

Thanks for this and have a happy new year.

[eL_PuSHeR]

Thank you very much Tulon.

[Tulon]

Another build, fixing a crash on pages with little or no text: http://depositfiles.com/files/yjfu8mz8d

[dtic]

Great! Thank you Tulon and happy new year.