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Paletted image

As explained in Learn Go with Pocket-Sized Projects

A paletted image stores each pixel as an index into a finite color palette rather than as direct color components.

A paletted image stores each pixel as an index into a finite color palette instead of directly encoding RGBA components. Fewer palette colors can reduce size, but may produce compression artifacts. section 9.6.2

A Go paletted image supports practical GIF rendering:

  • Create one with image.NewPaletted, supplying a rectangle and a palette such as Plan9 or WebSafe. section 9.6.2

Maze-solver animation

A concurrent maze solver paints explored pixels, periodically converts the maze into paletted frames, and appends a final solution frame with the path highlighted.

How Learn Go with Pocket-Sized Projects covers it

How deep it goes
Defines palette indexing, demonstrates frame construction and scaling, and notes artifacts without developing palette design.
Examples
Uses a 500-pixel-wide maze frame, Plan9 palette, explored-pixel updates, and a highlighted final solution frame.
What it assumes
Assumes Go image handling, RGBA pixel access, and GIF concepts while defining palette indexing directly.
What you can do after
Build it from scratch with Go image packages and convert maze images into palette-based GIF animation frames.
How it connects
Connects GIF images with color palettes, RGBA conversion, image scaling, and animation frames.
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Related concepts

This explainer was generated by Manning's knowledge graph from the text of Learn Go with Pocket-Sized Projects. The section links point to the parts of the book it draws on.