Image Processing in Julia Workshop | JuliaCon 2023

[MendeBadra]

Image Processing in Julia Workshop | JuliaCon 2023
00:00:00 Welcome & special thanks to Ashwani Rathee
00:02:09 Where to find notebooks (check description)
00:03:17 0-Dependencies & instantiating
00:04:25 1-Introduction to Images.jl suite
00:10:51 Basics
00:15:02 Different options for image visualization
00:19:54 Julia memory mapping
00:22:06 ImageView.jl features & dict output
00:27:37 Custom GUI's with GtkObservables.jl
00:31:22 Core concepts
00:36:53 Colors & orders of an RGB array
00:47:39 Q: Does Julia provide functions to change the order?
00:52:09 Q: Can you apply custom weights to RGB2Gray conversion?
00:53:04 Q: Colorspaces (like CMYK)?
00:54:07 Meaning of numbers (255 != 1.0)
01:02:43 Q: Why having all the trouble of making your own type handle?
01:08:20 Q: Is N0f8 divided by 255 or 256
01:11:19 (after break) 2-Filters => blurring
01:22:26 Q: How to bluronly the selected elements of an image?
01:25:09 The laplacian filter
01:25:55 Custom kernels with OffsetArray.jl
01:27:58 Q: Adjusting the indices of kernel to make padding(?)
01:31:05 KernelFactors for custom seperable kernels
01:34:12 Nonlinear operations: applying a function to sliding windows (mapwindows)
01:36:05 Does mapwindow do any caching(?)
01:38:21 2nd example of mapwindow
01:39:20 Q: Is it combine two nonlinear operations?
01:40:24 Corners and Edges
01:46:33 Q: Are there any packages to deal with camera distortions? (EM)
01:49:01 3-Transformations: a) Contrast enhancements
01:58:18 b) Spatial and Warping transformations
02:06:20 Q: Cropping images with arbitrary axis and is it allocating new memory?
02:09:41 Spatial (cont.)
02:17:27 c) Morphological Operations
02:19:11 4-Segmentation: ex. unseeded region growing
02:26:46 Seeded region growing
02:28:09 Felzenwalb & Meanshift algorithms
02:31:09 Watershed algorithm
02:35:23 Ashwani's contribution & closing words
02:37:45 Sudoku demo prepared by Ashwani
02:39:44 Final Q&A