RMagick VS dot-matrix

require 'rmagick' include Magick module LambdaFunction class Handler def self.process(event:, context:) image_url = event['image_url'] my_image = ImageList.new(image_url) # TODO: Use rmagick to make your image transformations # Docs: https://rmagick.github.io { "success": true } end end end

mini_magick is much slower than YOLO. I hear that rmagick is well maintained these days, so you may want to use that.

To accomplish this project, I knew I would need some way to process the input images. Resizing the images was the easy bit. The more complex (and more important) task was to find the best way to relate a pixel's color in the source image to a dot's size in final animation. I felt that the relative luminance as described in this W3 accessibility document was a logical property to use in this case, and can be easily calculated with a color's RGB components. After determining what tasks I needed to fulfill, I determined that the RMagick library would be a good choice for this project.

Whenever I start learning a new skill, I like to come up with a project I can use to apply the skill, test my knowledge, and push myself to find areas where I need to improve. As helpful as tutorials and walkthroughs are, I find that I always get the most experience when I can struggle through a project I start from scratch and apply the knowledge I've learned without explicit instructions. I decided to write this blog about my first Ruby project because I really enjoyed this project and think the results are pretty cool! I won't get into the details about the code here, but it is all available on my GitHub!