Automatic Video Stream Analysis using Tesseract

[joshyjosh...@gmail.com]

Hello,

I have integrated the Tesseract OCR capability in an Augmented Reality software application (Unity3D|C#) where an Android tablet recognizes a product's serial-number upon taking a picture of it.

Now, I would like to "automate" this process, so that the user would not have to zoom the device's cam on the serial-number and press a button to take a photo, etc... but instead just hover the tablet on the product until Tesseract has recognized the serial-number's text.

In other words, I would like Tesseract to analyze the incoming video stream and perform recognition constantly on all frames until the text is recognized.

Of course, initially I had no idea if this would be possible, so as a first solution, I wrote a program to emulate the "photo-button-press" + "text-string-recognition" processes and repeat then every 1 second.

The performance is OK and the whole thing gets the job done, but I still wonder if Tesseract might be able to work on a live stream of video coming in through a tablet's cam and perform OCR on the incoming frames...

Joshua

[Zdenko Podobný]

IMO it was one first example app I saw (several years ago):

https://www.youtube.com/watch?v=FOSgiPjGwx4

Also I saw app (on youtube) that do OCR+translation:

https://www.youtube.com/watch?v=2PRQo7EWYd8

...so it should be possible.

Zdenko

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[Zdenko Podobný]

First app source code should be here:

https://github.com/rmtheis/android-ocr

Zdenko