VisML Week 3 Lab Recap - CS-GY 9223 Fall 2025

Perception and Color in Practice

Lab Topics Covered

• Perceptual principles and pre-attentive processing
• Cleveland & McGill’s graphical perception rankings
• Color theory and creating effective color palettes
• Accessibility testing and color vision deficiency considerations

Slides

The slides for this week’s lab can be found here.

Key Resources from Lab

• ColorBrewer - Color palette selection tool
• WebAIM Contrast Checker - Accessibility testing
• D3 Color Schemes - Implementation reference

Exercises

1. Pre-attentive processing demonstrations
2. Cleveland & McGill encoding comparisons
3. ColorBrewer palette creation
4. Visualization improvement challenge with accessibility testing

Miscellaneous Notes

• Assignment information will be posted to course communication channels.
• TA office hours are TBD and will be announced via Discord.
• Next week: Model Assessment and Performance Metrics visualization