Image and Video processing using Python

1. Still Image and Video Processing
Applications using Python
BangPypers August Meetup
22nd August 2020
Presented by,
Dr. R. Senthilkumar,
Assistant Professor,
Dept. of ECE,
Institute of Road and Transport Technology,
Erode, Tamil Nadu-638316
Email: senthilkumareceirtt@gmail.com,
Contact no: 9940882605
Saturday, August 22, 2020

2. Python Libraries
Python 3.7 and above
Matplotlib
Numpy
Scipy
Pillow
OpenCV

3. Software Weblinks
Python 3.7 - https://www.python.org/
Matplotlib - https://matplotlib.org/
Numpy - https://numpy.org/
Scipy - https://www.scipy.org/
Pillow - https://pypi.org/project/Pillow/
OpenCV - https://pypi.org/project/opencv-python/

4. Software Installation
Python 3.7
* Download Python latest version from Python.org
* Install the Python in windows in any drive
* After installation check whether it is properly installed or not
in your system using the command
D:Program FilesPython37>python
Python 3.7.0 (v3.7.0:1bf9cc5093, Jun 27 2018,
04:06:47) [MSC v.1914 32 bit (Inte
l)] on win32
Type "help", "copyright", "credits" or "license" for more
information.
>>>

5. Software Installation
Numpy, Scipy and Matplotlib installation
D:Program FilesPython37>python
Python 3.7.0 (v3.7.0:1bf9cc5093, Jun 27 2018, 04:06:47) [MSC
v.1914 32 bit (Inte
l)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy
>>> import scipy
>>> import matplotlib
>>>
1. python -m pip install numpy
2. python -m pip install scipy
3. python -m pip install matplotlib

6.  Run: pip install opencv-python
- if you need only main modules
 Run: pip install opencv-contrib-python
- if you need both main and contrib modules

7. Basic Image Processing using
matplotlib & pillow Python libraries
Exercises:
1. Image read and display
2. Pseudo color Image
3. Pseudo color Image color bar
4. Image Resizing
5. Image Interpolation
6. RGB to Gray Image
7. Histogram Plot
8. Cropping a Portion of an Image
9. Shape of an Image and gray scale conversion
10.Image transform
11.Image Filtering
12.Image Details and Changing Image File Format

8. Results
Copyright
Image

9. Output:
Exercise 1

10. Output:
Exercise 2

11. Output:
Exercise 3

12. Output:
Exercise 4

13. Output: Exercise 5

14. Output: Exercise 6

15. Output:
Exercise 7

16. Output:
Exercise 8

17. Output: Exercise 9

18. Output:
Exercise 10-1

19. Output:
Exercise 10-2

20. Output:
Exercise 10-3

21. Output:
Exercise 10-4

22. Output:
Exercise 10-5

23. Output: Exercise 11-1

24. Output: Exercise 11-2

25. Output: Exercise 11-3

26. Output: Exercise 11-4

27. Output: Exercise 12

28. More practice- refer the youtube link
https://www.youtube.com/watch?v=Me2OWBstBNg&t=21s

29. Image Processing using OpenCV
Exercises:
1. Read a colour and display an image
2. Read a colour image and display the size of an image
3. Convert a colout image into Gray image
4. Vertical and Horizontal stack more than one image
5. Image transform (rotation)
6. Image resize

30. Output: Exercise 1
Image size (183, 275)
Output: Exercise 2

31. Output: Exercise 3

32. Output: Exercise 4

33. Output: Exercise 5

34. Output: Exercise 6
Orignal Image Resized Image

35. More practice- Refer the youtube
video link
https://www.youtube.com/watch?v=CCkDS-fo-eQ

36. Video Processing using OpenCV
Exercises:
1. Capture a colour video from web camera
2. Capture a colour video from web camera and covert into
gray video
3. Capture a colour vido and get its frame width and height
4. Set the user specified frame width and height
5. Play a already recorded video
6. Capture a video using webcamera and flip that video

37. Exercises:
7. Converting Colour video to Gray video
8. Converting Colour video to Gray and Gray to Binary video
9. Video Blurring (Low pass filtering)
10. Video resize and interpolation followed video blurring
11. Edge detection
12. Video Masking
13. Histogram Equalization
14. Video image transform
15. Video motion Detection

38. More practice –Refer the youtube
video lecture
https://www.youtube.com/watch?v=bR01_iGx7os