Q&A Thread
When should I mark an object as occluded vs. truncated?
Jules Kim · Updated 2h ago
Question context
Reviewers mentioned occlusion and truncation in the guidelines. I want to make sure I use the right attribute when objects overlap or touch the frame edge.
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Replies (2)
Samira Patel
Occluded means part of the object is hidden by another object, but you can still infer its full shape. Truncated is when the object goes outside the image frame. If both apply, mark occluded and note the truncation in attributes.
Marco Li
A quick check: if the missing pixels are due to frame boundaries, it is truncation; if due to overlap, it is occlusion.