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The basics of manipulating and viewing image data with Julia.
Full course information: https://computationalthinking.mit.edu/Fall20/

Installing Julia and Pluto.jl: https://www.youtube.com/watch?v=OOjKEgbt8AI&list=PLP8iPy9hna6Q2Kr16aWPOKE0dz9OnsnIJ&index=2

Contents
0:00 - Introduction
0:15 - Pluto notebook
0:35 - Pluto: Using a webcam as input
1:12 - What is an image?
1:31- Zooming into an image gives pixels
1:50 - Indexing into an image
2:10 - Julia: Strings
2:20 - Julia: Download function
2:30 - Julia: "using" and Images library
2:47 - Pluto: begin..end for multiple lines
3:00 - Pluto: Images are displayed as images
3:05 - Philip the Corgi appears for the first time
3:20 - Julia: typeof function
3:39 - Julia: 2D array
3:50 - Julia: RGB type for colors
4:45 - Julia: size function (dimensions of an array)
5:10 - Julia: Indexing into an array
5:52 - Julia: Slicing an array
6:42 - Julia: Integer division
7:42 - Julia: Concatenating arrays and images
8:25 - Julia: reverse function
9:19 - Manipulating pixel data
9:36 - Julia: Copy function
10:04 - Julia: for loop
10:37 - Julia: for loops return nothing
11:37 - Julia: Broadcasting with "."
12:35 - Julia: Accessing a field with "."
14:25 - Transforming an image: Decimation
15:07 - Preview of image blurring
16:40 - Pluto: Interactive slider from PlutoUI
17:30 - What does blurring do?
17:56 - Preview of edge detection