Good markers

Marker quality directly affects tracking quality. Here are the keys to choosing good images.

What makes a good marker

1. High contrast — Images with defined edges and a variety of tones
2. Unique textures — Non-repetitive patterns with lots of detail
3. No large uniform areas — Avoid flat backgrounds or smooth gradients
4. Asymmetric — Images that don't repeat if you rotate or flip them

What to avoid

• Very dark or very bright images
• Simple logos with few details
• Text only (low visual information)
• Blurry or low-resolution images
• Symmetric or repetitive patterns

Optimal conditions

Aspect	Recommendation
Printed size	Minimum 10 cm x 10 cm
Distance to camera	20 - 60 cm
Lighting	Good light, avoid direct reflections
Surface	Flat, without wrinkles or glare

Good examples

• Photographs with detail
• Illustrations with textures
• Book or album covers
• Packaging with rich design

Bad examples

• A solid color rectangle
• A minimalist logo
• A blank page with text
• A highly pixelated image