These platforms come equipped with the ability to capture a document and upload it directly to the platform. Obviously this explains the colourshift when using the sheetfeeder (ADF - automatic document feeder): no preview.Document scanning software is designed to replace a physical scanner. I tried a few times, indeed, using the scan preview gets me much better results. show a preview first, then hit the button, orĢ. When performing a single scan, using the flatbed, I have two options:ġ. Now I discovered what likely is the problem and this is really weird. I expected that to happen as it happened when scanning multiple documents using the sheetfeeder. Now, I made a few copies of the same (ctrl-c/ctrl-v), so 4 TIFs 4 PNGs and combined them into a PDF: they were fine (no colourshift). When displayed side-by-side I could not see the difference. Hence I went on to experiment with these TIF files.įlatbed scanned a colourful document, both as TIF and PNG. When I get various colours when scanning the same thing and shown on the same monitor, using the same scanner, etc. I understand your thoughts about calibrating, but, no offense meant, I believe it is something else. Thank you so much for your elaborate reply. Then you just sit back, and they will be PDFed and OCRed. If you drag multiple TIF images onto the Acrobat icon, Acrobat will ask if these should be saved as one document or independent documents. The 2nd advantage is that you can take these TIF images from your desktop, drag them onto the Acrobat icon in your Startup strip (or Dock if you're on a Mac) and they will automatically be converted into a PDF. So any color you scan is much less likely to be radically shifted as you're seeing. There are two advantages to this: one is that TIF does use Indexed colors and is not lossy (like jpg images are). What I strongly recommend you do is scan to the TIF format. I have a strong hunch that this is what your issue is. Now, back to your situation: are you saving the documents as png-8 or png-24? This is important as png-8 is what's called indexed color and can easily be shifted way off of the actual colors. In all honesty, the most likely user of this is either printing companies and professional photographers. The calibration process essentially goes through anywhere from 80-150 different colors and makes sure that what's red in one is THE EXACT SAME RED in the other. While flat-screen TVS have much better default calibration, they are still off. I do not know if you're old enough but "back in the old days," you'd walk into a TV store filled with cathode ray tube TVs and every one of them was set to the same station, and everyone looked different. When you're having issues with colors, I have to ask if you have your monitor and your scanner calibrated. Because of this, sometimes it IS better to use the software directly rather than through Acrobat. And, depending on the software, you might have fewer options than scanning directly. Assuming that you're on a PC, Acrobat uses a piece of software called Twain to connect Acrobat and your scanner's software. When you're scanning from within Acrobat, you ARE scanning with your software's scanning software. In the attachment, on the left, that is the most realistic colour, in the middle it is fairly 'acceptable', on the right details are lost.Īnyway, there simply is no solution for this, I let it rest. Multiple pages (searchable or non-searchable) too bright. So, single page to PNG, okay, single page to PDF, okay. and on top it does not have double sided scanning, so I let that rest). (BTW, I also tried WIA, but it requires a lot of finetuning, white comes out blueish, one needs to increase brightness, etc. There is some sort of colourshift or something, but the result is much more brighter. When I scan multiple pages (no matter whether using Epson software or Acrobat), it goes wrong. When I do the same (Using Epson Scanner software) to scan a single page to PDF that look quite okay as well. There is something strange: when I use the scanner software scanning a single page to PNG, the quality is fine. I have been busy with this about whole day now, but give up.
0 Comments
Leave a Reply. |