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How to detect/skip empty scanned pages?

Posted: Tue Jun 06, 2017 7:16 pm
by Dorwol
Hi,
how can I detect if a scanned page is completely empty?

Because I must skip empty pages in a scan process.

Re: How to detect/skip empty scanned pages?

Posted: Thu Jun 08, 2017 10:21 am
by Lzcat - Tracker Supp
Hi Dorwol.
Can you be more specific?
We will need what SDKs you are using and on which step you need to detect this.

Re: How to detect/skip empty scanned pages?

Posted: Mon Jun 19, 2017 6:50 pm
by Dorwol
For Scanning I use xcscan40 from "PDF-XChange Pro SDK 6".

Re: How to detect/skip empty scanned pages?

Posted: Mon Jun 19, 2017 7:19 pm
by Dorwol
I also use "Image-XChange SDK 4"

Re: How to detect/skip empty scanned pages?

Posted: Tue Jun 20, 2017 6:29 am
by Lzcat - Tracker Supp
Hi Dorwol.
If you are using "Image-XChange SDK 4" you have full control over image (before placing it to pdf file).
You can examine image data using IMG_PageLockBlock/IMG_PageLockBlock if you need some custom logic.
For simple case (if you scanner produce clean white images) you may use IMG_PageCountColors to make sure that page is solid, and use IMG_PageGetPixel to check solid color.
HTH.