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Tappy Defender – Building the home screen

In this article by John Horton , the author of Android Game Programming by Example , we will look at developing the home screen UI for our game.

Hand Gesture Recognition Using a Kinect Depth Sensor

In this article by Michael Beyeler author of the book OpenCV with Python Blueprints is to develop an app that detects and tracks simple hand gestures in real time using the output of a depth sensor, such as that of a Microsoft Kinect 3D sensor or an Asus Xtion. The app will analyze each captured frame to perform the following tasks: Hand region segmentation : The user's hand region will be extracted in each frame by analyzing the depth map output of the Kinect sensor, which is done by thresholding , applying some morphological operations , and finding connected components Hand shape analysis : The shape of the segmented hand region will be analyzed by determining contours , convex hull , and convexity defects Hand gesture recognition : The number of extended fingers will be determined based on the hand contour's convexity defects , and the gesture will be classified accordingly (with no extended finger corresponding to a fist, and five extended fingers corresponding to an open hand)

Using Resources

In this article written by Mathieu Nayrolles , author of the book  Xamarin Studio for Android Programming: A C# Cookbook , wants us to learn of how to play sound and how to play a movie by using an user-interactive—press on button in a programmative way.

The Swift Programming Language

This article is by Chuck Gaffney , the author of the book iOS 9 Game Development Essentials . This delves into some vital specifics of the Swift language.

Creating Instagram Clone Layout using Ionic framework

In this article by Zainul Setyo Pamungkas , author of the book PhoneGap 4 Mobile Application Development Cookbook , we will see how Ionic framework is one of the most popular HTML5 framework for hybrid application development. Ionic framework provides native such as the UI component that user can use and customize.

The Camera API

In this article by Purusothaman Ramanujam , the author of  PhoneGap Beginner's Guide Third Edition , we will look at the Camera API. The Camera API provides access to the device's camera application using the Camera plugin identified by the cordova-plugin-camera key. With this plugin installed, an app can take a picture or gain access to a media file stored in the photo library and albums that the user created on the device. The Camera API exposes the following two methods defined in the object: getPicture : This opens the default camera application or allows the user to browse the media library, depending on the options specified in the configuration object that the method accepts as an argument cleanup : This cleans up any intermediate photo file available in the temporary storage location (supported only on iOS)

Using the OpenStack Dash-board

In this article by Kevin Jackson , Cody Bunch , and Egle Sigler , the authors of the book OpenStack Cloud Computing Cookbook - Third Edition , we will cover the following topics: Using OpenStack Dashboard with LBaaS Using OpenStack Dashboard with OpenStack Orchestration

Creating Interactive Spreadsheets using Tables and Slicers

In this article by Hernan D Rojas author of the book Data Analysis and Business Modeling with Excel 2013  introduces additional materials to the advanced Excel developer in the presentation stage of the data analysis life cycle . What you will learn in this article is how to leverage Excel's new features to add interactivity to your spreadsheets.

Mathematical Imaging

 In this article by Francisco J. Blanco-Silva , author of the book Mastering SciPy , you will learn about image editing and the purpose of editing is the alteration of digital images, usually to perform improvement of its properties or to turn them into an intermediate step for further processing. Let's examine different examples of editing: Transformations of the domain Intensity adjustment Image restoration

Deploying on your own server

In this article by Jack Stouffer , the author of the book Mastering Flask , you will learn how to deploy and host your application on the different options available, and the advantages and disadvantages related to them. The most common way to deploy any web app is to run it on a server that you have control over. Control in this case means access to the terminal on the server with an administrator account. This type of deployment gives you the most amount of freedom out of the other choices as it allows you to install any program or tool you wish. This is in contrast to other hosting solutions where the web server and database are chosen for you. This type of deployment also happens to be the least expensive option. The downside to this freedom is that you take the responsibility of keeping the server up, backing up user data, keeping the software on the server up to date to avoid security issues, and so on. Entire books have been written on good server management, so if this is not a responsibility that you believe you or your company can handle, it would be best if you choose one of the other deployment options. This section will be based on a Debian Linux-based server, as Linux is far and away the most popular OS for running web servers, and Debian is the most popular Linux distro (a particular combination of software and the Linux kernel released as a package). Any OS with Bash and a program called SSH (which will be introduced in the next section) will work for this article, the only differences will be the command-line programs to install software on the server.

Using Underscore.js with Collections

In this article Alex Pop , the author of the book, Learning Underscore.js , we will explore Underscore functionality for collections using more in-depth examples. Some of the more advanced concepts related to Underscore functions such as scope resolution and execution context will be explained. The topics of the article are as follows: Key Underscore functions revisited Searching and filtering This article assumes that you are familiar with JavaScript fundamentals such as prototypical inheritance and the built-in data types. The source code for the examples from this article is hosted online at, and you can execute the examples using the Cloud9 IDE at the address from the collections folder.

Storing and Generating Graphs of the Stored Data

In this article by Matthijs Kooijman , the author of the book Building Wireless Sensor Networks Using Arduino , we will explore some of the ways to persistently store the collected sensor data and visualize the data using convenient graphs. First, you will see how to connect your coordinator to the Internet and send its data to the Beebotte cloud platform. You will learn how to create a custom dashboard in this platform that can show you the collected data in a convenient graph format. Second, you will see how you can collect and visualize the data on your own computer instead of sending it to the Internet directly.

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