Tag: polygon annotation

Illustration showing different image annotation techniques including bounding boxes, polygon outlines, semantic segmentation masks, and keypoint markers applied to a street scene for training computer vision AI models

by Sanksshep Mahendra Updated May 19, 2026 at 1:56 pm

How do We Annotate an Image

Why it matters: Learn how to annotate images for AI with bounding boxes, segmentation, and keypoints. Step-by-step guide, top tools, and best practices for 2026.