mobile image processing part1

Bernd Girod, David Chen: EE368 Mobile Image Processing – Part 1 no. 1 Mobile image processing – Part 1  Mobile application development on Android  Project 1: “Hello Image”, reading/writing/modifying images  Project 2: “Viewfinder EE368”, processing viewfinder frames  Project 3: “CVCamera”, utilizing OpenCV functions  Mobile application examples Bernd Girod, David Chen: EE368 Mobile Image Processing – Part 1 no. 2 http://www.stanford.edu/~gtakacs/publication.html Mobile landmark recognition Bernd Girod, David Chen: EE368 Mobile Image Processing – Part 1 no. 3 http://www.stanford.edu/~sstsai/research.html Mobile product recognition Bernd Girod, David Chen: EE368 Mobile Image Processing – Part 1 no. 4 Popular mobile platforms Symbian Apple iOS Windows 7 Nokia N8 HTC Arrive Samsung Focus iPhone iPad Motorola Droid Nokia N97 Android Samsung Galaxy Tab Bernd Girod, David Chen: EE368 Mobile Image Processing – Part 1 no. 5 Spotlight on Android  Open source mobile platform developed by Google  Supported by Open Handset Alliance  13 mobile operators  18 handset manufacturers  20 semiconductor companies  16 software makers  Uses an open-source, customizable Linux kernel and a virtual machine designed for mobile hardware  Largest share of smartphone market in the US  Android Market now contains over 250k apps Bernd Girod, David Chen: EE368 Mobile Image Processing – Part 1 no. 6 Android software stack [ Professional Android Application Development ] Linux Kernel Bernd Girod, David Chen: EE368 Mobile Image Processing – Part 1 no. 7 Programming in Java  Android encourages high-level development  Android uses Java as the 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 Bernd Girod, David Chen: EE368 Mobile Image Processing – Part 1 no. 8 Android programming with Eclipse Eclipse IDE Android SDK Java Runtime program installation and execution system messages programmer inputs data and messages Internet Bernd Girod, David Chen: EE368 Mobile Image Processing – Part 1 no. 9 Class tutorials for Android (1)  Android tutorials designed specifically for mobile image processing in the EE368 class  Tutorial #1: Basic Android Setup  Image processing-oriented introduction to Android  Explains how to download and install the different software packages (JDK, SDK, Eclipse) on your own computer  Shows how to build and run a viewfinder app that computes color histograms in real time  Tutorial #2: OpenCV for Android Setup  Builds on core skills developed in Tutorial #1  Explains how to download and install OpenCV for Android  Shows how to build a more advanced viewfinder app that computes various image feature keypoints supported by OpenCV Bernd Girod, David Chen: EE368 Mobile Image Processing – Part 1 no. 10 Class tutorials for Android (2) http://ee368.stanford.edu/Android Support for Windows, Macintosh, and Linux in both tutorials [...]... BitmapFactory.decodeFile(imageFileName); // Display the image in the image viewer myImageView = (ImageView)findViewById(R.id.my _image_ view); if (myImageView != null) { myImageView.setImageBitmap(myBitmap); } Display image in viewer } } Bernd Girod, David Chen: EE368 Mobile Image Processing – Part 1 no 17 HelloImage Activity class (3) private void processImage() { brighten(50); Apply some image processing operation... EE368 Mobile Image Processing – Part 1 no 22 Class Project: Jigsaw Puzzle Solver L Liang and Z Liu, Spring 2010 http://ee368.stanford.edu/Project_10 Bernd Girod, David Chen: EE368 Mobile Image Processing – Part 1 no 23 Mobile image processing – Part 1      Mobile application development on Android Project 1: “Hello Image , reading/writing/modifying images Project 2: “Viewfinder EE368”, processing. .. 0, width, height); } Bernd Girod, David Chen: EE368 Mobile Image Processing – Part 1 no 19 Running the program on an Android device 0123456789ABC Bernd Girod, David Chen: EE368 Mobile Image Processing – Part 1 no 20 “Hello Image application running on device http://ee368.stanford.edu/Android/HelloImage Bernd Girod, David Chen: EE368 Mobile Image Processing – Part 1 no 21 Class Project: Plant Leaf... Chen: EE368 Mobile Image Processing – Part 1 no 14 Recommended project settings (2) Bernd Girod, David Chen: EE368 Mobile Image Processing – Part 1 no 15 HelloImage Activity class (1) Subclass of Activity class will be visible on the phone public class HelloImage extends Activity { Bitmap myBitmap; ImageView myImageView; public void onCreate(Bundle savedInstanceState) { … } private void processImage()... Chen: EE368 Mobile Image Processing – Part 1 no 16 HelloImage Activity class (2) onCreate called when the application first starts public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); String imageFileName = “/sdcard/test_vga.jpg”; File imageFile = new File(imageFileName); Load image if (imageFile.exists()) { from SD card // Load the image from... Girod, David Chen: EE368 Mobile Image Processing – Part 1 no 12 “Hello Image project  Goals of this project     Learn how to create a new Android project Learn how to read/write images from/to SD card Learn how to access and modify image bitmaps Full source available on class website:  http://ee368.stanford.edu/Android/HelloImage Bernd Girod, David Chen: EE368 Mobile Image Processing – Part 1 no... bufOutStr.close(); } catch (FileNotFoundException exception) { image to the SD card Log.e("debug_log", exception.toString()); } catch (IOException exception) { Log.e("debug_log", exception.toString()); Catch exceptions } myImageView.setImageBitmap(myBitmap); Show the image on the display } Bernd Girod, David Chen: EE368 Mobile Image Processing – Part 1 no 18 HelloImage Activity class (4) private void brighten(int... Project 1: “Hello Image , reading/writing/modifying images Project 2: “Viewfinder EE368”, processing viewfinder frames Project 3: “CVCamera”, utilizing OpenCV functions Mobile application examples Bernd Girod, David Chen: EE368 Mobile Image Processing – Part 1 no 24 ...Eclipse IDE Different perspectives Text editor Class hierarchy Project files Bernd Girod, David Chen: EE368 Errors and warnings Mobile Image Processing – Part 1 no 11 Structure of an Android Project in Eclipse Programmer-defined Java files Program new functions here Auto-generated Java files Don’t edit anything here Android library Don’t