Polyline Annotation Services
Precise line annotations for lanes, boundaries, and linear features. Essential for autonomous driving and mapping with sub-pixel vertex accuracy.
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Precision Line Annotation
Lane Images
Accuracy
Line Types
Pilot Time
What is Polyline Annotation?
Polyline annotation involves drawing connected line segments to mark linear features like road lanes, boundaries, or edges. Each line can have multiple vertices for precise curve following and sub-pixel accuracy.
Critical for autonomous vehicle training where lane detection must be pixel-perfect, and for GIS applications requiring accurate mapping of roads, rivers, and infrastructure.
Trusted by AI Leaders
See what our clients say about working with AI Taggers
"Lane detection is critical for our autonomous vehicle system. AI Taggers annotated 300k road images with sub-pixel accuracy on curves and intersections. Their attention to detail is unmatched."
Sub-Pixel Accuracy
Precise vertex placement for curved lines and complex paths
Multi-Class Support
Different line types: solid, dashed, double, and custom
Verified Quality
Reviewed by autonomous driving and mapping experts