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get images and all sizes? |
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johnny
Beginner Joined: 08 May 19 Location: Earth Status: Offline Points: 17 |
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Posted: 18 Jun 19 at 5:31PM |
hi all
i want to determin if a pdf uses images as background or in general take all images and check their sizes. with the FindImages i get the count, after that what function exist to loop into the found images and check their sizes? C# thank you |
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Ingo
Moderator Group Joined: 29 Oct 05 Status: Offline Points: 3524 |
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Hi Johnny.
this sample could be a kickstart for your first codes... https://www.debenu.com/kb/extract-images-from-pdf-files-as-the-appropriate-image-type/ ...and GetImageListItemIntProperty is the most important function for this: https://www.debenu.com/docs/pdf_library_reference/GetImageListItemIntProperty.php Good luck and much success :) |
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Cheers,
Ingo |
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johnny
Beginner Joined: 08 May 19 Location: Earth Status: Offline Points: 17 |
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thanks so much Ingo the tricky part was to find this 401 = Width in pixels 402 = Height in pixels there is no properly named properties you need to pass "int code numbers" and that makes is hard during search.... |
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johnny
Beginner Joined: 08 May 19 Location: Earth Status: Offline Points: 17 |
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btw why the GetPageImageList() usually start with 0 and not 1?
i mean in other functions the page of your pdf document starts from 1 not index 0, but in this function seems to start from 0.
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johnny
Beginner Joined: 08 May 19 Location: Earth Status: Offline Points: 17 |
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since sharing is caring here is my function in case it will help someone else with similar question in the future.
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Ingo
Moderator Group Joined: 29 Oct 05 Status: Offline Points: 3524 |
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a small hint:
I've test-pdfs from architects with a lot of text and numbers on the pages and embedded cad images with extreme dimensions. You can have a text-pdf with standard pdf dimensions with a small image inside which has huge dimensions after extraction. |
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Cheers,
Ingo |
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johnny
Beginner Joined: 08 May 19 Location: Earth Status: Offline Points: 17 |
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is ok...cause i am only interested in pdf that are A4 or similar size invoices for my app. no chance a CAD will be used for this. just invoices that are scanned and imported automatically to many popular Account Application :)
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