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emsys
USA
5 Posts |
 Posted - Dec 20 2021 : 21:46:21
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I need to process scanned pdf documents and split each page into 4 images.
Can you point me in the right direction to do that? I was not able to access the pdf pages once I disabled the ImageEnView PdfViewer. Can I copy the pages from the PdfViewer to IEBitmap in the same ImageEnView? or is it preferable to copy to a second ImageEnView?
The second task that I would like to perform is to OCR the pages - but the information that we are interested in is hand-written.
Does IEVision have any success in OCRing hand-written text?
Thanks for your help,
Elias
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emsys
USA
5 Posts |
Posted - Dec 21 2021 : 20:23:20
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I found a post that mentioned PdfViewer.DrawTo function, so I implemented that by opening the pdf file in one ImagenEnView and using PdfViewer.DrawTo to copy the page to the IEBitmap of a second ImageEnView. Then I was able to do the image processing in the second ImageEnView.
But when working with the images in the second ImageEnView, I noticed that the resolution seems to be less than the original pdf file. So to check, I saved one page from the pdf file to a jpeg image using Adobe Acrobat and then saved the same page to a jpeg image using ImageEnView. The resolution of the Adobe saved image ended up 1352 x 1749. The ImageEn saved jpeg image has a resolution of 612 x 792.
Are there options to get the higher resolution image from the pdf file using ImageEn?
Thank you,
Elias
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xequte
38610 Posts |
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emsys
USA
5 Posts |
Posted - Dec 23 2021 : 00:21:30
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Nigel,
Thank you for the info. I am now using the TImageEnIO.LoadFromFilePDF - and that is working great for both being able to do image processing in ImageEnView and getting the images at higher resolution.
The issue I am having now is that when I save the images to jpeg using the same TImageEnIO that I loaded from the PDF, I am not getting any compression. It doesn't matter what value I set IO->Params->JPEG_Quality to. I get the same jpeg file size.
I saw couple posts mentioning that situation but I have not been able to get it to work.
More thanks for all your help,
Elias
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xequte
38610 Posts |
Posted - Dec 23 2021 : 04:11:26
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Hi Elias
Please show me your code.
Nigel
Xequte Software
www.imageen.com
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emsys
USA
5 Posts |
Posted - Dec 24 2021 : 13:20:19
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Hi Nigel,
I was using IO->Paramas->TIFFJPEG_Quality in my code and realized that I need to use IO->Params->JPEG_Quality. I thought that I had switched all the code to use JPEG_Quality but I had not.
Now it is working correctly.
Thanks again,
Elias
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xequte
38610 Posts |
Posted - Dec 26 2021 : 14:44:13
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Thanks for the update.
Nigel
Xequte Software
www.imageen.com
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Image processing PDF document
