These are the slides of the RoboCV Workshop organized by roboVITics on August 11th-12th, 2012 in TT311 Smart Classroom, VIT University, Vellore. The workshop was delivered by the following people: 1. Mayank Prasad, President of roboVITics 2. Akash Kashyap, President of TEC - The Electronics Club of VIT 3. Akshat Wahi, Asst. Project Manager of roboVITics

1. INTRODUCTION TO
OPENCV AND MATLAB Module 2
© roboVITics | Mayank Prasad, 2012 1

2. OUTLINE
 Introduction to OpenCV and MATLAB
 Why OpenCV?
 Installing and Running OpenCV & MATLAB in Windows
 Hello World with images using OpenCV and MATLAB
© roboVITics | Mayank Prasad, 2012 2

3. WHAT IS OPENCV ?
 OpenCV (Open Source Computer
Vision Librar y) is a library of
programming functions mainly
aimed at real-time computer
vision
 Developed by Intel, and now
supported by Willow Garage and
Itseez
 It is free for use under the open
source BSD license
 The library is cross-platform. It
focuses mainly on real -time
image processing.
© roboVITics | Mayank Prasad, 2012 3

4. WHAT IS MATLAB ?
 MATLAB (matrix laboratory) is
a numerical computing environment
and 4G programming language
 Developed by MathWorks, MATLAB
 Allows matrix manipulations, plotting
of functions and data, implementation
of algorithms, creation of user
interfaces, and interfacing with
programs written in other
languages, including C, C++, Java, and F
ortran.
 Several toolboxes used for engineering
tasks
 Image Processing Toolbox used here
© roboVITics | Mayank Prasad, 2012 4

5. WHY CHOOSE OPENCV?
 Specific – built exclusively for IP applications
 Speed – at least 4-5 times faster than other interfaces
 Ef ficiency – uses less system resources
 Optimized – highly optimized routines available
 Cross Platform – supports C, C++, python
 Open Source – open source and free of cost
© roboVITics | Mayank Prasad, 2012 5

6. Our People
will help
INSTALLING AND you out.
Please
RUNNING OPENCV AND refer to
the
MATLAB supporting
document
shared in
the folder
© roboVITics | Mayank Prasad, 2012 6

7. INSTALLING MATLAB
Installation
 Run the setup file
 Click „Yes‟ or „Next‟ wherever necessary ;)
 Provide the license key and the license file when asked for
 Click „Finish‟, reboot your system, and you are good to go!
Now run it
 Now double click on the MATLAB R2011a icon on your desktop
 You should see the MATLAB command window window in front
of you!
© roboVITics | Mayank Prasad, 2012 7

8. CONFIGURING OPENCV
 Install the superpack version of OpenCV provided.
 You can download the latest version from Sourceforge.
 Installation will merely extract all the build files into a folder.
 Copy that folder into C: drive and rename it exactly as
“OpenCV2.3.1”
 Open Visual Studio C++. Download and install it if you don‟t
have it.
 Next open the text file provided during the workshop named
“Config OpenCV”
 Follow the instructions given there. The instructions are for
configuring OpenCV2.3.1 in Windows with Visual C++ IDE.
© roboVITics | Mayank Prasad, 2012 8

9. Hello
HELLO WORLD World with
Images
© roboVITics | Mayank Prasad, 2012 9

10. HELLO WORLD WITH IMAGES
 Hello World is the simplest application that you can build
using any programming languages.
 When learning C, it is displaying some text on the screen.
 In case of images, it will be displaying an image on the screen
 Just do as your instructor is doing in front of you.
 Algorithm is as smooth as butter!
 Initialize everything
 Load an image
 Show it in a window
© roboVITics | Mayank Prasad, 2012 10

11. PROGRAMMING Related to C
CONCEPTS
© roboVITics | Mayank Prasad, 2012 11

12. C++ PROGRAMMING BASICS – REVISITED
 Nature of the Code
 Code, Files, Compile, Executable
 Variables and Data Types These are the
 Simple Types concepts that you
 int, float, char, ASCII, bool/boolean, string, byte, long will require while
 Arrays programming in
 Type-Casting OpenCV. So revise
 Operators them!
 Control Statements
 if-else, for, while, do-while, continue, break
 Functions
 Defining and Declaring Functions
 Passing parameters/arguments
 Naming a function
 Function Overloading
 Structures and Structure Variables
 Classes and Objects
 Scope
 Pointers
© roboVITics | Mayank Prasad, 2012 12

13. DELVING DEEPER INTO OPENCV
UP NEXT
Module 3
© roboVITics | Mayank Prasad, 2012 13

14. CONTACTS
 Mayank Prasad
President, roboVITi cs
mayank@roboviti cs.in
 Akshat Wahi
Asst. Project Manager, roboVITi cs
+91 909 250 3053
akshat@core.robovitics.in
 Akash Kashyap
President, TEC – The Electronics Club of VIT
akash130791@gmail .com
© roboVITics | Mayank Prasad, 2012 14