With the release of Android 6.0, named Marshmallow came various new features runtime permissions being a major change. Before Marshmallow, all the permission required to run an app was granted to the app during installation, and mostly users didn’t know what permissions the app was using as they were all granted during installation. With Android …

Request multiple runtime permissions in android marshmallow at once example Read More »

Text Detection using electronic devices link an Android device using an app is also called optical character recognition (OCR). Since it’s inception OCR has come a long way in terms of speed and ease of use, but we still cannot detect handwritten text and accuracy of OCR depends on various factors. Text recognition  in Android …

Creating OCR Android app using Tesseract in Android Studio Tutorial Read More »

In this example, we will detect text using an Android app using Tesseract for Android Studio. We can easily do OCR in an android app using Tesseract library. Tesseract for Android can be used as a dependency and you can learn how to setup Tesseract in Android Studio in this tutorial.In this example we will …

Text recognition (OCR) in Android app using Tesseract example Read More »

For Real Time text detection in Android, we will be using OpenCV, and to recognize the text in from the detected text region, we will use Tesseract text detection engine for Android. This part deals with the text detection using OpenCV for Android part. In the next part we will recognize the detected text using …

Text Detection and recognition in Android using OpenCV MSER algorithm Read More »

This post follows from the previous post on setting focus modes in OpenCV using JavaCameraView.In that post, we created a class that extended from JavaCameraView and we defined methods that could be used to set different focus modes. OpenCv for Android  Here, we are going to extend the functionality of that class by creating a …

Turn on/off Camera Flash with openCV for Android Read More »

This post follows from the previous post on Creating a class that extends JavaCameraView. We can use this class to set up focus modes, flash and resolution using openCV for Android. OpenCV for Android It’s pretty simple to find out supported resolutions and set resolution in Android Camera using OpenCV. Just include these methods in …

How to set Camera Resolution in Android with OpenCV Read More »

Setting focus mode in Android using JavaCameraView class of OpenCV for Android is pretty easy. You just need to create a class that extends from JavaCameraView, get the camera parameters and set the focus mode in the camera parameter and set those parameters in mCamera variable. OpenCV for Android How to set Autofocus and other …

Set focus modes in OpenCV using JavaCameraView for Android Read More »

Copying files from assets folder to internal storage in Android is not a difficult task. It consists of three parts: Assets folder directory structure How to copy files from assets to Internal Storage Android –  First make sure the assets folder is in the correct location. The correct location of Assets folder in Android is …

Android copy files from assets to datafile in Internal Storage. Read More »

There are two types of fingerprint certificates in Android, one is Debug and the other is Release. You need to sign your app in Debug mode just for testing purposes. Do not publish apps that are singed in debug mode. You need to sign your app with Release certificate before publishing. Here’s how to get …

How to get the SHA1 fingerprint certificate for release and debug in Android Studio? Read More »