How to resolve the algorithm Percentage difference between images step by step in the Frink programming language

Published on 12 May 2024 09:40 PM
#Frink

How to resolve the algorithm Percentage difference between images step by step in the Frink programming language

Table of Contents

Problem Statement

Useful for comparing two JPEG images saved with a different compression ratios. You can use these pictures for testing (use the full-size version of each): The expected difference for these two images is 1.62125%

Let's start with the solution:

Step by Step solution about How to resolve the algorithm Percentage difference between images step by step in the Frink programming language

Source code in the frink programming language

img1 = new image["file:Lenna50.jpg"]
img2 = new image["file:Lenna100.jpg"]

[w1, h1] = img1.getSize[]
[w2, h2] = img2.getSize[]

sum = 0
for x=0 to w1-1
   for y=0 to h1-1
   {
      [r1,g1,b1] = img1.getPixel[x,y]
      [r2,g2,b2] = img2.getPixel[x,y]
      sum = sum + abs[r1-r2] + abs[g1-g2] + abs[b1-b2]
   }

errors = sum / (w1 * h1 * 3)
println["Error is " + (errors->"percent")]

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