SikuliX

Similarity / Score

Asked by Rideg on 2012-11-07

What is the similarity or the getScore() computation based on? Is it a pixel by pixel comparison?
I tried comparing two very similar images (basically the same screen but one of them has additional text in a textfield while the other has the textfield empty, and i got a score of ~0.48.
Comparing 2 completely different screens is returning a score of ~0.53.
I am trying to understand why these 2 scores are close while i would have expected a score close to 1 in the first case, and close to 0 in the second case.

Question information

Language:: English Edit question

Status:: Solved

For:: SikuliX Edit question

Assignee:: No assignee Edit question

Solved by:: RaiMan

Solved:: 2012-11-08

Last query:: 2012-11-08

Last reply:: 2012-11-07

Link existing bug

Revision history for this message

RaiMan (raimund-hocke) said on 2012-11-07:

not really clear what you did?

Comparing 2 screens? Used the Finder class?

Paste your test snippet.

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Rideg (rimadeghaili) said on 2012-11-07:

Just doing something simple like the below to try Sikuli and see if I could adopt it for my project to compare images.
But i want to understand how the getScore() works. What does this score really represents and how is it computed?

Finder f = new Finder("D:\\sikuli_screens\\figure1.png");

         f.find("D:\\sikuli_screens\\figure2.png",0.6);
        if (f.hasNext()) {
            System.out.println("same");
            System.out.println(f.next().getScore());
        } else {
            System.out.println("different");