mobile image processing part1

Programming in Java Android encourages high-level development  Android uses Java as main programming language  Android uses Java as main programming language  Inherits basic classes

Mobile image processing – Part 1

 Mobile application development on Android

 “Hello World” project

 Hello World project

 “Viewfinder EE368” project

 Image processing library g g y

 Mobile application examples

Layar augmented reality

Landmark Recognition

http://www layar com http://www.layar.com

Streaming mobile augmented reality

Book cover recognition

http://www youtube com/watch?v=fKm7iknUFqc http://www.youtube.com/watch?v=fKm7iknUFqc

Industry support for Android

 Open source mobile platform developed by Google

 Supported by Open Handset Alliance: over 60 companies

 Supported by Open Handset Alliance: over 60 companies including major service carriers and major mobile device manufacturers

Programming in Java

 Android encourages high-level development

 Android uses Java as main programming language

 Android uses Java as main programming language

 Inherits basic classes from conventional Java

 String, Container, Math, IO, Network

 Adds new classes specific to mobile devices

 Camera, Telephony, Map, GPS, Speech

Android software stack

[ Professional

[ Professional Android

Application Development ]

Android software stack

[ Professional

[ Professional Android

Application Development ]

Android software stack

[ Professional

[ Professional Android

Application Development ]

Android software stack

[ Professional

[ Professional Android

Application Development ]

Android programming framework

program installation

and execution

system messages

Eclipse IDE

programmer inputs IDE

inputs

Android SDK

Java Runtime

Class tutorial for Android

 Framework can be installed from scratch on your own

computer (Windows, Mac, or Linux) following the tutorial p ( , , ) g provided to the class

 Tutorial explains how to download the different software packages

 Tutorial explains how to install and link packages

 Tutorial explains how to install and link packages

 Tutorial provides full source for code examples used in lecture

 Link: http://ee368.stanford.edu/Android

Class tutorial for Android

Class tutorial for Android

Class tutorial for Android

 Framework can be installed from scratch on your own

computer (Windows, Mac, or Linux) following the tutorial p ( , , ) g provided to the class

 Tutorial explains how to download the different software packages

 Tutorial explains how to install and link packages

 Tutorial explains how to install and link packages

 Tutorial provides full source for code examples used in lecture

 Link: http://ee368.stanford.edu/Android

 Framework for Linux already installed and tested on the

SCIEN computers

 Add a soft link in your Leland account to our software

 Personalize your Eclipse workspace

Li k htt // 368 t f d d /A d id

 Link: http://ee368.stanford.edu/Android

Eclipse IDE Different

perspectives

Text editor

Class hierarchy

Project files j

Errors and warnings

Eclipse IDE: project files

Java source files

Program new functions here

Auto-generated Java files

Don’t edit anything here

Eclipse IDE: Android phone emulator

Dummy checkerboard pattern

mimics real camera viewfinder

“Hello World” project

 Goals of this project

 Learn how to create a new Android project p j

 Learn how to edit Java source files

 Learn how to create layouts in XML

 Learn how to run a new program on emulator and phone

 Learn how to run a new program on emulator and phone

Creating a new project (1)

Creating a new project (2)

Creating a new project (3)

Make sure this is your personal workspace

Creating a new project (4)

Editing the Java source file

Every visible program uses an extension of the Activity class

To auto-import necessary

classes, use Control + Shift + O

extension of the Activity class

Set the layout of this Activity by overriding the onCreate method

Editing the layout resource file

Editing the values resource file

Define string constants, number g , constants, color constants, etc here

Debugging syntax errors

Look for red markers on the side and explanations below

Running the program (1)

Running the program (2)

03EH368929E3K

Actual device

Emulator

Program execution messages on the console

Program apk file installed to device

Main Activity started on device