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Scanning/processing on Android phone/tablet

Posted: 16 Jul 2018, 16:40
by bookscanner
I'm developing Android application for complete book processing workflow (useful in libraries etc).

Currently implemented camera image processing with various filters, every filter can be added/removed, enabled/disabled and configured with immediate result display.
For now available regular filters (brightness/gray/mono (several algorithms),rotation/crop etc).
More sophisticated (dekeystoning/dewarping/deskew/despeckle etc) are planned.

ImageImage

ImageImage

Download/test APK (works on Android > 4.2):
abscan.apk.zip
(141.77 KiB) Downloaded 400 times

Re: Scanning/processing on Android phone/tablet

Posted: 17 Jul 2018, 06:02
by L.Willms
I don't want to discourage the bookscanner, but I had recently seen a software by Adobe for this. How does that compare to yours?

Re: Scanning/processing on Android phone/tablet

Posted: 17 Jul 2018, 06:45
by bookscanner
Adobe Scan? I don't know, it requires registration. As I understand, its more automatic, without full control / fine tuning of applied filters, and its not standalone, some operations (OCR etc) require connection to Adobe services/cloud

Re: Scanning/processing on Android phone/tablet

Posted: 18 Jul 2018, 09:06
by bookscanner
Added real-time change of photo resolution/capture period, flash on/off, filters save/load to text format, new filters (contrast stretch, histogram equalization)
abscan.apk.zip
(146.93 KiB) Downloaded 407 times

Re: Scanning/processing on Android phone/tablet

Posted: 19 Jul 2018, 15:10
by bookscanner
Long click on left checkbox - remove filter.
Long click on filter/parameter name shows its description

Re: Scanning/processing on Android phone/tablet

Posted: 22 Jul 2018, 08:08
by bookscanner
added pages view, PDF generation
abscan.apk.zip
(157.4 KiB) Downloaded 378 times

Re: Scanning/processing on Android phone/tablet

Posted: 23 Jul 2018, 07:11
by bookscanner
added image deskew (Radon/Hough)
abscan.apk.zip
(169.78 KiB) Downloaded 420 times

Re: Scanning/processing on Android phone/tablet

Posted: 26 Jul 2018, 12:18
by bookscanner

Re: Scanning/processing on Android phone/tablet

Posted: 06 Aug 2018, 13:50
by bookscanner
Added support for Bluetooth shutter (enabled by "trig" checkbox).
Smaller button takes new photo, bigger adds new page

https://ru.aliexpress.com/item/Shutter- ... 67522.html

Re: Scanning/processing on Android phone/tablet

Posted: 09 Jun 2020, 08:02
by the.traveller
Without reading your post about your excellent efforts on building an Android application for scanning I found earlier this year in 2020 an Android app called vFlat which does a pretty good job making a picture, removing fingers and correct some warping of the page.
Go look here: https://play.google.com/store/apps/deta ... nner&hl=en
Don't get fooled with the sample movie. You still need a glass plate te keep pages as straight as possible