rsmbl/Resemble.js

Ignoring antialiasing does not work correctly

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#151 opened on Sep 5, 2018

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 (7 comments) (0 reactions) (0 assignees)JavaScript (4,364 stars) (433 forks)batch import
BugGood first issue

Description

Hello guys.

How do you think these images are equivalent if you want to ignore antialiasing?

resemble js image analysis 2018-09-05 19-12-43

Expected behaviour: comparison with tolerance 2.3 and with ignore antialiasing

Contributor guide

Tech stack
javascript
Domain
testing
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Basic understanding of image processingJavaScript
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Investigate the antialiasing logic in the Resemble.js source code, specifically the ignoreAntialiasing option. Review the issue comments for any hints about the discrepancy. Examine the comparison algorithm to understand how tolerance and antialiasing interact. Look at related tests or documentation for expected behavior.