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T O P I C    R E V I E W
emsys Posted - Dec 20 2021 : 21:46:21
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
6   L A T E S T    R E P L I E S    (Newest First)
xequte Posted - Dec 26 2021 : 14:44:13
Thanks for the update.

Nigel
Xequte Software
www.imageen.com
emsys Posted - Dec 24 2021 : 13:20:19
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
xequte Posted - Dec 23 2021 : 04:11:26
Hi Elias

Please show me your code.

Nigel
Xequte Software
www.imageen.com
emsys Posted - Dec 23 2021 : 00:21:30
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
xequte Posted - Dec 21 2021 : 22:31:10
Hi Elias

I'm not seeing any advantage to using PdfViewer in your description below.

You can just load the PDF file directly into the TIEBitmap, e.g. by attaching it to a TImageEnIO

https://www.imageen.com/help/TImageEnIO.CreateFromBitmap.html

Then load the PDF at a desired size:


https://www.imageen.com/help/TImageEnIO.LoadFromFilePDF.html


However I don't think you'll have much success OCRing hand written text.


Nigel
Xequte Software
www.imageen.com
emsys Posted - Dec 21 2021 : 20:23:20
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