The Recognition options determine the language and accuracy of the OCR process: Use the Subset option to select All Pages, Odd Pages Only or Even Pages Only. Use the Pages box to determine specific pages of the document on which to perform the OCR process. Use Selected Pages to OCR only the pages pre-selected from the Thumbnails pane. Select Current Page to OCR only the current page. Select All to OCR all the pages of the document. Click Convert in the Ribbon Toolbar, then click OCR Page(s) in the submenu. Thus essential to run an editor spell checker on the resultsĪs to quality of displaying letters as vectors this depends on the OCR application So this one has tidied up the words for accessibility readers, (still a few problems as described above) and generated the characters into a font suited to display as vectors (much like the Word conversion) but the errors will be just as noticeable because the source image is here not overlaid.1. So now if we use your source we can see that even cleaned up it will be prone to failĮither single characters will be ignored or mis read The OCR will still make mistakes but less of them so i m is seen as a single W Going back to resolution there is a problem area where here at 192 dpi the text is not clearly readable as single characters (OCR will attempt to replace characters one by one, then detect a word from those)īut if Scanned at 600dpi the text is clearly single characters So you may complain "Unfair you used a clean source scan" so as to illustrate your point, and that is the whole point, that a bad JPEG lousy scan is nowhere near as good to produce any meaningful result compared to a good fresh, even a lower density PNG style of scan. However since it is clean it works well in an online OCR pixels to Words sharp Vector character processor, but will be better if a higher density such as 192 dpi. The problem is when captured that 96 DPI looks like this in a computer program so it looks better for being pure colour tones without any JPG content or bleed through to confuse any OCR device. Here is the original screen at lower 96 DPI density. However there should be no fixation of resolution. One of the best ways to improve a scanned source is to use the original again so here is that area as seen by a 200 DPI TIFF fax machine, where we are at the limits for recognising words. If you need to also preserve images, then you need to choose whether Image over Text or Text over Image looks best. So, fixing issue 1 will then allow you to change issue 2 in order to preserve vector-based PDFs. This is now entirely vector, no raster image at all, so it will always be sharp. I've enlarged this one so you can see that - though it's total garbage - it's at least sharp garbage. If you save as Text only, you would then see this… Still terrible, because your scan is not properly readable If you flip the presentation order to 'Text over Image' then you would instead see this… The actual selection is not of the image, but of the hidden text underneath. In a PDF reader it will look like this, with some text selected. I'm guessing you have 'Image over Text' which will present the file looking just like the original scan, but with hidden 'real' selectable text underneath.
#CONVERT PDF IMAGES TO TEXT SOFTWARE#
Most OCR software has options for PDF, determining how the PDF should be presented. You're saving your PDF the 'wrong way up'.You need to significantly increase the resolution of your scans. Even cleaned up in Photoshop & switched to black & white, a human can read this, but a machine can't. Your source image is far too low-quality to successfully OCR.What steps and tools can I use to enhance the pixelated text in the scanned PDF images? Is there any specific software or technique that can help me achieve this? Additionally, what are the best practices for converting this improved text into a high-quality digital font or vector format?Īny guidance or recommendations on image editing software, font digitization tools, or suitable workflows would be greatly appreciated.
I want to improve the text quality and convert it into a digital font or vector format that is crisp, clear, and non-pixelated. The text in the scanned images looks jagged and blurry, making it challenging to read. I have already attempted optical character recognition (OCR) and can copy the text, but it lacks the desired quality.
I want to convert this pixelated text into a high-quality digital font or vector format, so it retains its clarity and smoothness. The OCR process has extracted the text, but it appears low quality and pixelated. I have a scanned PDF document containing images with pixelated text.
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