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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
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
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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
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