Hi, I have a document that was created with some pages having a black background and white letters. I've been asked if I can reverse that to be white background with black letters. I didn't create the document so I don't have the original. Please help if possible. The document was scanned from a hard copy into adobe acrobat pro.
changing a black background to white and white letters to black
2010-01-15 07:08:55
My Product Information:
Acrobat Standard 9.0, Windows
Acrobat Standard 9.0, Windows
2010-12-21 13:30:46
#2
Hi I have the same problem but it is microfilm, reels and reels that have been scanned and converted to PDF's. ANy way to take say a 24 page document and reverse all the pages? It takes a lot of blank ink to print these legal size. We have here at Oregon Dept of Trans 10K images on microfilm this way. Any help would be approecated.
2010-12-23 22:37:10
#3
Acrobat can export each PDF's page content to a TIFF file.
The export could be done with an Acrobat Batch Sequence (pre Arobat X) or an Action (if using Acrobat X).
A photo editing program (MS Paint will do) can "invert" each TIFF to white background/black text.
New PDF files can be made from these.
Combine, via Acrobat, to create a more usable document.
Very likely there is something that could be done with Windows scripting or VB to provide a programmatic approach to the TIFF "invert".
Some sort of appropriate directory setup might be needed to keep each original PDF document's export TIFFs kept together.
The export could be done with an Acrobat Batch Sequence (pre Arobat X) or an Action (if using Acrobat X).
A photo editing program (MS Paint will do) can "invert" each TIFF to white background/black text.
New PDF files can be made from these.
Combine, via Acrobat, to create a more usable document.
Very likely there is something that could be done with Windows scripting or VB to provide a programmatic approach to the TIFF "invert".
Some sort of appropriate directory setup might be needed to keep each original PDF document's export TIFFs kept together.
2010-12-27 08:13:33
#4
That worked well, is there a way to do it to each document at once? Most have 10-50 pages this way. Our network will not allow batch work, just user level, I am not a IT God with permissions! BTW Absolutely much better to read the correct way over microfilm! Bosses are very happy!
2010-12-29 08:16:27
#5
Correct, With Photoshop, I have instructions on how to convert the document: Many thanks to Rbogert Adobe User for assistance.
"most of the tasks of the black/white conversion work flow can be automated. however, the poor contrast makes automation difficult, given that the contrast and brightness of each page must be individually adjusted in photoshop. also, if the white/black borders are to be taken off, the task can be done only by hand. the trick is to make the contrast and brightness ajustments before doing the b/w inverstion. to achieve a small file, save the inverted image to monochrome TIFF. then combine the TIFFs in Acrobat.
this can not be done without extacting the individual pages from the PDF."
-rbogert
"most of the tasks of the black/white conversion work flow can be automated. however, the poor contrast makes automation difficult, given that the contrast and brightness of each page must be individually adjusted in photoshop. also, if the white/black borders are to be taken off, the task can be done only by hand. the trick is to make the contrast and brightness ajustments before doing the b/w inverstion. to achieve a small file, save the inverted image to monochrome TIFF. then combine the TIFFs in Acrobat.
this can not be done without extacting the individual pages from the PDF."
-rbogert
As the PDF's content is an image (the scanner output) you can export the image.
Then, using a photo editing application, edit the background color to something else
and edit the parts of the image that represent "text" to the desired color.
As to photo editing - if nothing else, you can use MS Paint.
Doing the portion of pixels in the image that are "text" will be tedious.
For future scans, to avoid black background-white text:
Look over these posts by "abhigyan":
http://www.acrobatusers.com/forums/aucbb/viewtopic.php?id=14955
http://www.acrobatusers.com/forums/aucbb/viewtopic.php?id=16716
Be well...
Be well...