PDF cropping software: BRISS

[nlundberg]

Hi,

I used this software years ago and now I needed to split another two page scanned pdf, but it does not work. I remember it worked flawless before. Briss (0.9) keeps loading the document and get sluggish, but never completes.

I am using the same MacBook Pro, but the os is High Sierra.

The PDF is 300 pages, so maybe that could be a problem. But when I try to divide it up in OS X Preview, the PDF size gets ten times larger.

Thanks!

N.

[willus]

Originally Posted by nlundberg

Hi,

I used this software years ago and now I needed to split another two page scanned pdf, but it does not work. I remember it worked flawless before. Briss (0.9) keeps loading the document and get sluggish, but never completes.

I am using the same MacBook Pro, but the os is High Sierra.

The PDF is 300 pages, so maybe that could be a problem. But when I try to divide it up in OS X Preview, the PDF size gets ten times larger.

Thanks!

N.

I can't help you make Briss work. It has not been supported for quite a while now. But if your document is "2-up" you can crop to individual pages with k2pdfopt like so:

k2pdfopt -mode crop -grid 2x1x0 myfile.pdf

The 2x1x0 tells k2pdfopt to break the document into 2 columns by 1 row with 0% overlap. The -mode crop tells it to put each of those grid regions into a new page in the destination document.

[nlundberg]

Thanks a lot, seems great! Is there setting to skip pages to crop? The first two pages are single page.

...how would I add auto straighten (-as) after the split, without the optimise rescaling? Can I do it in one pass?

[j.p.s]

Originally Posted by nlundberg

Thanks a lot, seems great! Is there setting to skip pages to crop? The first two pages are single page.

...how would I add auto straighten (-as) after the split, without the optimise rescaling? Can I do it in one pass?

I've never found an ideal way to crop PDFs, but the one I keep coming back to is the croppdf shell script attached to post #247 of this thread
https://www.mobileread.com/forums/sh...245322&page=17
Be sure to read post #246 and follow the quoting chain back. There were later posts as well.

[nlundberg]

@j.p.s

Thanks, I'll check that one out too. k2pdfopt did actually did what I asked for right away. Then, as always, you see a lot of interesting options and become greedy...

[j.p.s]

Originally Posted by nlundberg

@j.p.s

Thanks, I'll check that one out too. k2pdfopt did actually did what I asked for right away. Then, as always, you see a lot of interesting options and become greedy...

k2pdfopt is probably easier to use, especially if you don't have ghostscript installed, but croppdf might make a smaller file.

[nlundberg]

After tons of tries with the command line trying to auto straighten, I had to give up. I could not find a way to cut out the black areas from the center of the book, since after the split from double page scans, the black area is alternating side throughout the document.
I tried some other options for cleaning up but the pages ended up with slightly different sizes and I couldn't figure out how to keep page sizes.

Would be fun to get it 100% right cosmetically but it is perfectly readable now.

[willus]

Originally Posted by nlundberg

After tons of tries with the command line trying to auto straighten, I had to give up. I could not find a way to cut out the black areas from the center of the book, since after the split from double page scans, the black area is alternating side throughout the document.
I tried some other options for cleaning up but the pages ended up with slightly different sizes and I couldn't figure out how to keep page sizes.

Would be fun to get it 100% right cosmetically but it is perfectly readable now.

Can you post or PM me the source PDF? BTW, I would have recommended two passes. There is a way to skip the first two pages using the -cbox option rather than the -grid option. Or you could just use a tool like cpdf to grab only pages you want from individual PDFs.

[nlundberg]

Originally Posted by willus

Can you post or PM me the source PDF? BTW, I would have recommended two passes. There is a way to skip the first two pages using the -cbox option rather than the -grid option. Or you could just use a tool like cpdf to grab only pages you want from individual PDFs.

Thanks, pm sent!

[willus]

Originally Posted by nlundberg

Thanks, pm sent!

I used two passes:

k2pdfopt -mode crop -t -cbox1,2 0,0,1s,1s -cbox3- 0in,0in,7.186in,7.65in -cbox3- 7.186in,0in,6.18in,7.65in source.pdf -o out1.pdf

k2pdfopt -mode crop -t -ac -as -w 7in -h 8in out1.pdf -o out2.pdf

This forces the output page size to be 7 x 8 inches. If you are okay with variable page sizes, you can remove the -w and -h options from the second pass.

[nlundberg]

Originally Posted by willus

I used two passes:

k2pdfopt -mode crop -t -cbox1,2 0,0,1s,1s -cbox3- 0in,0in,7.186in,7.65in -cbox3- 7.186in,0in,6.18in,7.65in source.pdf -o out1.pdf

k2pdfopt -mode crop -t -ac -as -w 7in -h 8in out1.pdf -o out2.pdf

This forces the output page size to be 7 x 8 inches. If you are okay with variable page sizes, you can remove the -w and -h options from the second pass.

Thanks, how should I do the two passes? Add the commands in one terminal session, or process quit, load out1.pdf and do 2nd pass?

I get this message on 2nd pass anyway:

Reading 294 pages from out1.pdf ...

SOURCE PAGE 1 of 294 (3.7 x 4.3 in) ... 1 new page saved.
warning: premature end of data in flate filter
warning: ... repeated 2 times ...
warning: premature end of data in flate filter
warning: ... repeated 2 times ...

Then it goes idle after page 16. :/

[willus]

Originally Posted by nlundberg

Thanks, how should I do the two passes? Add the commands in one terminal session, or process quit, load out1.pdf and do 2nd pass?

I get this message on 2nd pass anyway:

Reading 294 pages from out1.pdf ...

SOURCE PAGE 1 of 294 (3.7 x 4.3 in) ... 1 new page saved.
warning: premature end of data in flate filter
warning: ... repeated 2 times ...
warning: premature end of data in flate filter
 warning: ... repeated 2 times ...

Then it goes idle after page 16. :/

It hangs processing page 17, which doesn't have any text anyway, so you can just skip that page. I adjusted the autocrop to be not quite as aggressive.


k2pdfopt -mode crop -t -ac .02 -as -w 7in -h 8in out1.pdf -o out2.pdf -px 17

[Noccute]

I really like BRISS's cropping GUI, but I need destructive cropping, since I need to convert to ePub.

Is there a software that does destructive cropping instead of just hiding the data like BRISS?

Preferably I want a software that can post process BRISS cropped PDF to destroy everything outside of view.

[Noccute]

Originally Posted by Noccute

Preferably I want a software that can post process BRISS cropped PDF to destroy everything outside of view.

I mean all hidden text outside of the crop.

[JSWolf]

This thread should really be deleted. The term Briss used for this software could be considered a slur to Jewish people.