Image Processing: step 1. Convert image to gray scale. step 2. Emboss filtering. step 3. Merge the filtered image with the original image (addition)
Project Reference: https://lodev.org/cgtutor/filtering.html Image scanning: https://scratch-image-scanner.slmj.repl.co/ from project by MonkeyBean2 : https://scratch.mit.edu/projects/631798903/ Thank you MonkeyBean2.