Ultra Fast Colour Image Scanner | Scratch How-to Tutorial

The Fastest Colour Image to List Scanner for Scratch, up to x400 faster than the previous method - You'll be amazed! Image scanning is useful for making textures for use in games, as well as for paint programs, and many other imaginative projects! In this tutorial we walk through how colour scanning in Scratch is achieved, and then look at how we can make it so much better! My tutorials are for all budding game & software developers using Code Blocks. Scratch On guys! 🚀 *Boost Your Creativity with Griffpatch* The Griffpatch Academy will take you from "Gamer to Game Creator" Learn more at 👉 https://griffpatch.academy 👈 😺 Scratch was developed by the Lifelong Kindergarten Group at the MIT Media Lab. See http://scratch.mit.edu 👀 Previous GET COLOR tutorial - https://youtu.be/aBTh756kCZw 🐱 Scratch Studio for this tutorial - https://scratch.mit.edu/studios/31533631/comments 🐱 Blue Line Scanning Filter - https://scratch.mit.edu/projects/678512904/ 👀 Quick and Fun Tutorials - https://www.youtube.com/playlist?list=PLy4zsTUHwGJKByTn_qV76oTpEYGczqEb_ ❤️ Scratch Addons - https://scratchaddons.com/ 📹 Video Editing Software - https://techsmith.pxf.io/c/2682566/506622/5161 --------------Video Chapters-------------- 0:00 Intro 1:43 Scanning 6:20 Using Pen to Draw an Image from a List 9:49 Colour Caching 11:36 Pixel Accurate Scanning 14:09 The theory of Binary Search for Colour Scanning 17:30 Image Brightness 24:05 The Initial Scan 26:26 Possible Colour Values 30:04 Testing the Initial Scan 31:53 2nd Scan Pass 36:56 3rd Scan Pass 38:58 Correcting Edge Case Scanning Errors 43:31 Scanning with 3, 4 & 5 passes 45:47 Outro