Scanning/processing on Android phone/tablet

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bookscanner
Posts: 12
Joined: 18 May 2016, 08:24
E-book readers owned: 2 Android tablets
Number of books owned: 500
Country: Mongolia

Scanning/processing on Android phone/tablet

Post 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 397 times
L.Willms
Posts: 134
Joined: 21 Sep 2016, 10:51
E-book readers owned: Tolino Shine
Country: Germany
Location: Frankfurt/Main, Germany

Re: Scanning/processing on Android phone/tablet

Post 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?
bookscanner
Posts: 12
Joined: 18 May 2016, 08:24
E-book readers owned: 2 Android tablets
Number of books owned: 500
Country: Mongolia

Re: Scanning/processing on Android phone/tablet

Post 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
bookscanner
Posts: 12
Joined: 18 May 2016, 08:24
E-book readers owned: 2 Android tablets
Number of books owned: 500
Country: Mongolia

Re: Scanning/processing on Android phone/tablet

Post 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 404 times
bookscanner
Posts: 12
Joined: 18 May 2016, 08:24
E-book readers owned: 2 Android tablets
Number of books owned: 500
Country: Mongolia

Re: Scanning/processing on Android phone/tablet

Post by bookscanner »

Long click on left checkbox - remove filter.
Long click on filter/parameter name shows its description
bookscanner
Posts: 12
Joined: 18 May 2016, 08:24
E-book readers owned: 2 Android tablets
Number of books owned: 500
Country: Mongolia

Re: Scanning/processing on Android phone/tablet

Post by bookscanner »

added pages view, PDF generation
abscan.apk.zip
(157.4 KiB) Downloaded 374 times
bookscanner
Posts: 12
Joined: 18 May 2016, 08:24
E-book readers owned: 2 Android tablets
Number of books owned: 500
Country: Mongolia

Re: Scanning/processing on Android phone/tablet

Post by bookscanner »

added image deskew (Radon/Hough)
abscan.apk.zip
(169.78 KiB) Downloaded 418 times
bookscanner
Posts: 12
Joined: 18 May 2016, 08:24
E-book readers owned: 2 Android tablets
Number of books owned: 500
Country: Mongolia

Re: Scanning/processing on Android phone/tablet

Post by bookscanner »

bookscanner
Posts: 12
Joined: 18 May 2016, 08:24
E-book readers owned: 2 Android tablets
Number of books owned: 500
Country: Mongolia

Re: Scanning/processing on Android phone/tablet

Post 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
the.traveller
Posts: 82
Joined: 22 Sep 2010, 03:58
E-book readers owned: Samsung Tab S
Number of books owned: 800
Country: Netherlands
Location: Rotterdam, Netherlands

Re: Scanning/processing on Android phone/tablet

Post 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
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