Open CV Archives - Yaron Vazana

Android Text Detection Using OpenCV

February 2, 2016 by Yaron 38 Comments

Mobile devices have improved significantly over the past years. They are now capable of running intensive CPU tasks like image processing and object detection algorithms, perform mathematic calculations and even handle a large amount of data efficiently.

In this project I’m going explain how to use the OpenCV library in your android app, and implement a real time text detection algorithm using the rear phone camera. I will use the OpenCV MSER algorithm which is used to detect points of interest inside an image.

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How To Add OpenCV To Your Android App

January 20, 2016 by Yaron 4 Comments

OpenCV is an open source library which provides a wide range of machine learning and computer vision algorithms. OpenCV original library is written in C++ but there are wrappers for other major programming languages, including Java (for android).

Since I use OpenCV quite often, I decided to dedicate a separate post and write a tutorial on how to add the library to an existing android application, developed in android studio.

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Adding REST Endpoint To Your Android App

July 1, 2015 by Yaron 2 Comments

In the previous tutorials, I showed how to create Material Design android applications. Those applications were mostly UI based and didn’t really did an intensive background work. Switching views and showing some web service results is a trivial task which can be handled by the phone CPU easily. But what if we want to analyze our data before we serve it to our users? well, in that case, we would probably want to add some backend services to do all the hard work.

This tutorial shows how to add a Backend layer to your Android application and send/receive data from it

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Android Material Design Tabs Camera App (with FAB)

May 28, 2015 by Yaron 1 Comment

Designing an app is not an easy task, you always feel like some actions are left behind while others are getting promoted. Google introduced us with a new concept of floating actions buttons which basically puts your most important app action always visible on the screen and always reachable to the user (it’s even close to your fingers for all the right handed people).

This Tutorial Covers The Following:

Creating Tabs menu style android application
Getting images from the device camera
Setting a floating action button (FAB) for the application
Adding Open CV library for image processing

The full App code is available @ Github

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