casey/pxl

[pxl-build] Support gamma, linearization, and color spaces

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#79 opened on Jun 27, 2018

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enhancementgood first issue

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Description

The image crate loads image data from disk without gamma correction, linearization, or color-space correction.

We should respect gamma and color space information in image resource source PNGs and JPEGs and load images as linear RGB. For a good breakdown of these issues, see this crate.

Ideally the image crate could add this functionality, requested in this issue. If not, we might consider using a library that allows loading image metadata, or switching to another image decoding library.

Contributor guide

Research direction
Investigate how to implement gamma correction, linearization, and color space conversion when loading images. Look into the `image` crate's support or alternative libraries like `png` or `jpeg decoder` that expose metadata. Consider using the `palette` crate for color handling.
Tech stack
rust
Domain
computer graphics
Issue type
Feature
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.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Rustimage processing
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60