Develop Reference

Developing Face Recognition App

i'm new to developing android apps in general.
I'm trying to create an application that given a certain image it would detect faces and would give me the eye locations and other info.
I've done some research and i found some stuff such as, the android FaceDetector API and OpenCV.
Could anyone give me some advice on how to make an app like this or send me a link with any info related to this, all help would be great!
Thanks, Daniel.

I have worked with Face recognition for a while.
If you want to use OpenCV you could do a better effort searching in SO and you can found things like this one.
The best one for me is the SDK provide by lockheed martin... but it's too expensive :S for a single person.
Edited
"Face detection and face recognition are different things ;) Face detection tells you where is the face and face recognition tells you who's the owner of the face"
If you choose OpenCV, you can find full doc in official page.
I'm going to give you a overview :
You can use OpenCV in your app using "OpenCV Manager" or with "Static Initialization on OpenCV Android".
About the first one:
OpenCV Manager is an Android service targeted to manage OpenCV library binaries on end users devices. It allows sharing the OpenCV dynamic libraries between applications on the same device. The Manager provides the following benefits:
Less memory usage. All apps use the same binaries from service and do not keep native libs inside themselves;
Hardware specific optimizations for all supported platforms;
Trusted OpenCV library source. All packages with OpenCV are published on Google Play market;
Regular updates and bug fixes;
About the second one:
A complete tutorial using eclipse.

You might try the new Android face API. See the tutorial here about how to detect faces and facial landmarks:
https://developers.google.com/vision/detect-faces-tutorial

I explain how to do it in this article. I used a TensorFlow Lite with a MobileFaceNet implementation, achieving very accurate results and with surprisingly high speed.
You'll find the source code and an APK in this repo

Which AR (Augmented Reality) framework (Android & iOS) is suitable for my situation

My Situation
I want to build an Application that can recognize an Image to produce a corresponding model.
i.e. I focus the camera to show a printed image on the card that is designed by myself ( apple logo ) , then it will show a 3D model(.md2) on the screen which is also designed by myself.
I have googled many framework that worked on both Android & iOS, but the documentations are very limited and the trial version does not support me to test it.
for example,
http://www.metaio.com/sdk/
But their demo is not comprehensive enough to suite my situation
My Question
1.Would anyone can share their experience of developing with AR framework (not the AR core) on Android & iOS?
2.Is there any framework that support me to add a image as a key then it will map to my model with just a couples line of codes?
3.if Q2 is not possible, is there any approaches of some framework can also archive the some goal but more complex ?
//Logic flow
String key = "APPLE";
sdk.putKeyImage(key,apple.png);
...
if (sdk.identifiedAs(key)){
//Do something
//Example
sdk.showApple3DModel();
play(showSnakeEatApple.mp4);
}

I'm an android app developer. So according to my experince for android, you can go for
Vuforia (https://developer.vuforia.com/resources/sdk/android)
Wikitude (http://www.wikitude.com/developer/documentation/android)
These above 2 are enough good to implement AR app in android.
Vuforia is having well documented, also they have more libraries & mainly those are free. & Wikitude is best for making apps faster. I recommend you to use any of these for your AR app development in android.

I guess you should compare several AR frameworks to find a proper solution for your problem. Many different AR tools come to my mind. For example, Vuforia, LayAR, Kudan AR. To take a deeper look at the variety of possible options read the comprehensive comparison of the most popular frameworks: http://cases.azoft.com/top-5-tools-creating-augmented-reality-apps/

yes i did work on it not much but little bit i did research on augmented reality and after research i found one open source and cross platform well known sdk its name is
VUFORIA SDK
there are various SDK you find on google but trust me VUFORIA is best and flexible who gives lots of option
for that you need to install NDK in eclipse cause it have core cpp code who compile by NDK in eclipse
video tutorial click here
sdk and documentation click here
steps click here
hope it will be helpful for you thank you happy coding

How to add additional drivers to android stack

I need to customize the android source code to add another secondary display for the device (this is the requirement). Hence i need to integrate the secondary display's drivers into the android stack and also add some libraries to the android stack using which the secondary display can be controlled. The driver code is readily available, so i only need to integrate it with the android stack. As i have never worked with android source code i hardly have any idea about how to proceed. Also there is no tutorial available for any kind of guidance for the same.
So far with the help of this site I'm able to setup the environment using the instructions given here: http://source.android.com/source/downloading.html
I should perform the integration on jelly Bean, so have downloaded JB source code.
Now proceeding towards integration of the drivers i have no idea how to proceed. Please provide some tutorials or useful links to do so.
Thanks in advance.

Image processing on Android Platform

I am new to android platform and have to do by B Tech project on this. I have to do product recognition and then process them. So, I need to do some serious coding on implementation of Image Processing on Android platform.
For this, I would require :-
Through understanding of Android programming
Setting up the environment for image processing on Android.
Finally, an emulator to debug my codes
So, I need suggestions for all of the above, like, what book I should go through for learning Android , what emulators I should use and can I use openCV libraries in my android application.
Regrading emulators, I have heard, that they are pretty slow and have lots of bugs. They keep on hanging. So, should I have an Android mobile then ?
Please comment, if, you are unclear about my question.
PS: I posted the same question here, but got no replies. So, posted it again.
Thanks !!

There are a lot of books out there, CommonsWare is a pretty good place to start for the basics, he has office hours (where you can ask questions) and comments on here quite a lot.
There is only one emulator as far as I know, most people use eclipse for their environment and it's fairly well integrated with the android tool set, but there are a few others, as well as command line tools if your prefer those everything you need for android development is here other than eclipse which is here
In regards to image processing I assume you mean image matching and yes there is an openCV for android there are also some commercial offerings if you don't want to try and sort through openCV
If you are going to be using a camera to do image matching then the emulator is not a great choice unless you want to be restricted to using it with a webcam (which is a pain to get working) you will still work a lot with the emulator though.

Include OpenCV in android application package

I need to work on detecting edges from an Image, I'm using Canny algorithm for that.
Since OpenCV for android is available 2.4.2 while i'm trying to run examples it says.
"OpenCV Manager is not installed, please try to install it." after install it from the market it is working fine.
But if i want the user's to install my application so that they don't have to install another .apk for using my application.
-> How to use openCV without without asking for another application i.e. manger should be pre installed.?
-> is there any way i can use Canny algorithm for edge detection without OpenCV any good angorithm tutorials for implementing in in android.?

You might find information about this on the OpenCV webpage. This said, this is deprecated and OpenCV advises not to do this in production. The manager actually allows the user to download the OpenCV library once for all. Then, your application will be much smaller!
About not using OpenCV, you can try FastCV (as Aaron suggested), but it seems overkill for your application (and it requires you to be familiar with NDK development). With OpenCV, in the other hand, you can code either in java (by the way, have a look at JavaCV) or using the NDK.
Finally, if you only need a Canny Edge detector and don't want to use a library, you can try to write it yourself. The related page on Wikipedia should be enough for this (I could do it a few years ago as an exercise).

Have you looked into Qualcomm's FastCV? It offers some of the more common image processing algorithms offered in libraries like OpenCV. They also have a pretty cool augmented reality API called Vuforia.
Fair warning, the support documentation isn't that great and it requires that you are familiar with NDK development.
https://developer.qualcomm.com/mobile-development/mobile-technologies/computer-vision-fastcv