Introduction to image bounding boxes
Learn target scope, occlusion boundaries and visible evidence with original examples.
Annotator · Original teaching guide
What to learn and do
Read the target class and boundary rule, inspect the image, locate each target, then check omissions and duplicates. Visible extent and full-object extent are different conventions; do not mix them.
Original teaching example
Original text example: the task labels only visible pedestrian extent. When a fence hides the lower body, estimated foot positions are not observed boundaries. Identify visible evidence, then follow the task’s box convention for disconnected regions.
Counterexample and correction
Counterexample: guessing a full-body box from apparent height. Correction: return to the visible-extent rule and check the evidence for each boundary.
When evidence is uncertain
If occlusion is undefined, record the question and request clarification rather than turning a guess into a general rule.
Next step
Explain in your own words which judgment is supported and which remains uncertain, then continue to practice. Practice requires registration or sign-in. Reading this introduction is not course completion, assessment success or professional certification.
Continue to learning and practice