This document provides an introduction to OpenCV and computer vision. It discusses what computer vision is, some applications of computer vision, the history and modules of OpenCV, basic image structures and I/O functions in OpenCV, and how to compile and configure OpenCV projects.

1. OpenCV Introduction
Session1

2. As human we see
We analyse and undrestand

3. But what about our computers or Robots?

4. But NO Eyes !!
Camera
But how it can be done ?

5. That is what we called Computer vision !!

6. “Computer vision is the science of endowing computers or
other machines with vision, or the ability to see.”
- Erik G. Learned-Miller, University of Massachusetts

7. Computer Vision Applications

8. Computer Vision Fields
Medical
Industrial
Security
entertainment

9. Computer Vision Libraries

10. Back to history
●
Developed by Intel
●
Maintained by WillowGarage and It SeeZ
●
C/C++
●
Linux,Windows and iOS

11. A little bit serious..….
Let's talk about Opencv Modules

12. ●
core
→ Data Structures
→ Basic image processing functions
●
highgui
→ Simple user interface
→ Image&Video Capture

13. ●
imgproc
→ basic image processing algorithms
●
video
→ video analysis
●
objdetect
●
feature2d
●
calib3D

14. Image Structure
●
Iplimage
→ used in opencv1.x
→ Memory leaks if()
●
Mat
→ no memory problem
→ Easy to manipulate

15. Image I/O
●
Imread
→ read image from file
Mat imread(const string& filename, int flags=1 )
●
Imwrite
→ save image to a file
bool imwrite(const string& filename, InputArray img, const vector<int>& params=vector<int>() )
●
ImShow
→ show the image in a windows
Void imshow(const string& winame, InputArray mat)

16. Basic draw functions
●
Circle
→ void circle(Mat& img, Point center, int radius, const Scalar& color, int thickness=1, int
lineType=8, int
●
Line
→ void line(Mat& img, Point pt1, Point pt2, const Scalar& color, int thickness=1, int
lineType=8, int shift=0)
●
Ellipse
→ void ellipse(Mat& img, Point center, Size axes, double angle, double startAngle, double
endAngle, const Scalar& color, int thickness=1, int lineType=8, int shift=0)

17. Opencv Under Ubuntu

19. How to compile ?
g++ urcodename.cpp -o urcode `pkg-config
--cflags --libs opencv`

20. Configuration under vs10/12