Python Reading

• Skim over Image manipulation and processing using NumPy and SciPy.

Key Ideas

• Basic image manipulation with SciPy. (You may need to install the pillow package.)
• Images are NumPy arrays and can be easily manipulated via slicing, etc..
• Supports interesting operations like changing contrast, changing brightness, cropping, making the image black and white, etc.

Installing pillow

• Mac: pip3 install --user pillow
• Windows: Download pillow and install from the command prompt.

In-Class Activity

• Find a .png picture that you would like to edit.
• Try some of the image manipulations described in the tutorial.

Active Learning

1. Modify your selected image in a few ways that you choose.
2. Plot the resulting image.
3. Save the image to a new file.
4. Your next assignment will be to make a simple menu-driven image editor that can read, modify and save image files. (Start thinking about other operations you want to support.)