From 829abd4ab551753028470350c187fdb3361c1af9 Mon Sep 17 00:00:00 2001
From: Jake Howard <git@theorangeone.net>
Date: Tue, 15 Nov 2022 20:13:25 +0000
Subject: [PATCH] Flesh out notes based on run through

---
 src/index.html | 25 +++++++++++++++++--------
 1 file changed, 17 insertions(+), 8 deletions(-)

diff --git a/src/index.html b/src/index.html
index a6e0bc1..6f89622 100644
--- a/src/index.html
+++ b/src/index.html
@@ -33,9 +33,10 @@
             <aside class="notes" data-markdown>
               - I volunteer for Student Robotics
               - Charity to help students get into STEM
+                - Always looking for sponsors
               - Autonomous robotics competition
               - 16 - 19 year olds
-              - Always looking for sponsors
+              - This is from final competition in April
             </aside>
           </section>
         </section>
@@ -53,6 +54,10 @@
               - Look sorta like QR codes
                 - Just a single number
               - Simpler, so they're easier to detect
+              - Attached to objects in our arena
+                - Allows robots to work out where they are
+                - Without complexities of machine learning approaches
+                - "not hotdog"
             </aside>
           </section>
           <section>
@@ -66,7 +71,7 @@
           <h2 class="r-fit-text text-shadow">1. Capture an image</h2>
           <aside class="notes" data-markdown>
             - Need a camera
-            - Read an image
+            - Read an image as data
             - Image is just pixels (RGB)
           </aside>
         </section>
@@ -74,9 +79,8 @@
           <h2 class="r-fit-text text-shadow">2. Thresholding</h2>
           <aside class="notes" data-markdown>
             - Images aren't black and white
-              - This slide is
             - Markers _are_
-            - Black and white!
+            - Make everything black and white!
               - Not even greyscale
               - Much less data to be working with
             - Thresholding achieves this
@@ -105,7 +109,7 @@
             - Want the simplest possible case when decoding
               - Remove the need for special casing later
               - Make our lives easier!
-            - Skew the image a bit
+            - Skew the image a bit so it's straight on
               - Same process used for those paper scanning apps
           </aside>
         </section>
@@ -124,10 +128,9 @@
         <section>
             <h2 class="r-fit-text">6. Decoding</h2>
             <aside class="notes" data-markdown>
-              - Just 1s and 0s now
               - Keen eyed may have noticed 7x7 markers have 2041 combinations
                 - There are only ~255 possible combinations
-              - Error checks
+              - Error checking
                 - Single pixel flips can be corrected
                 - Sometimes even more
               - Try all 4 rotations
@@ -201,7 +204,8 @@
               - I've run through this quickly
               - Lots of intricacies
               - OpenCV has great primitives for these operations
-                - If it's good enough for JPL on Mars, it's good enough for me
+                - Thresholding, greyscale, pose estimation etc
+                - If OpenCV is good enough for JPL on Mars, it's good enough for me
                 - (and you)
               - OpenCV has a built-in marker detection library called ArUco
                 - Where I got lots of this from
@@ -234,6 +238,7 @@
         <section data-background-image="https://i.ytimg.com/vi/JICMv4TAFMA/maxresdefault.jpg">
           <aside class="notes" data-markdown>
             - Now you know how these markers work
+              - At a high level
             - Makes for great geeky pub conversation
           </aside>
         </section>
@@ -250,6 +255,10 @@
             - Notes are available online
             - Find out more about Student Robotics
               - If your company likes sponsoring charities, let's chat
+            - OpenCV has good documentation for how this stuff all works too
+            - AprilTag is another implementation, which OpenCV also has support for
+            - Find me on twitter
+              - Depending on how long it's still around
           </aside>
         </section>
         <section>