Description

Python for image processing The Python Language
● Python is:
○High level
○General purpose
○Interpreted (versus compiled)
● It has a simple syntax, emphasizing code readability
Getting Python
● (Mostly) pre-installed on macOS and Linux.
○ But might not be latest version.
● On Windows, download from python.org.
● Should be on lab computers.
● If you have a laptop, make sure you have it installed.
● Detailed introduction, such as
○ https://www.w3schools.com/python/python_intro.asp
Run your python code
● Command line:
○ Terminal
○ iTerm (for Mac OS) ○ cmd,Powershell,WSL (Windows)
● IDE:
○ IDLE
○ VS Code
○ PyCharm
○ Jupyter Notebook
○ …
Set up your conda env (Mac OS)
Mac OS
1. Download and install anaconda:
a. Mac OS: https://docs.conda.io/projects/conda/en/latest/user-guide/install/macos.html 2. Install required packages:
a. https://anaconda.org/conda-forge/matplotlib
3. Check your env with `conda list`
Windows
Download the installer from anaconda.com and install.
VS Code
Download: https://code.visualstudio.com/download

Working with Image in Python
● Python Image Manipulation Tools You Can Try:
○ Numpy
○ PIL/ Pillow
○ OpenCV
○ Scikit-Image
○ …
Numpy
NumPy is the fundamental package needed for scientific computing with Python.

Matrix operations

Matrix arithmetic

Pillow
Pillow is the friendly PIL fork. PIL is the Python Imaging Library, adds image processing capabilities to your Python interpreter.

When I run this from terminal:

Convert RGB image to Grayscale

Image processing with pixels

Function

Call function from another file

Plotting images using Matplotlib

More plotting

Lines Scatter Bars Histogram
More usage and examples please refer to W3School and Matplotlib documentation