Object Instances Panel

Annotations pile up fast: a busy frame carries dozens of shapes, and the canvas alone stops being a manageable view. The Object Instances panel (bottom left of the editor) is the ledger: every annotation as a row with its class, its ID, and the controls that keep a crowded task under control.

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Anatomy of a row

• Class color and name identify what the annotation claims to be.
• The instance ID (like #7302) names this exact annotation, which makes review feedback and discussions unambiguous: “the box is loose” helps nobody, “#7302 is loose” ends the search.
• The eye hides the shape on canvas without deleting anything.
• The lock protects the shape from selection and edits.
• The expand arrow reveals the annotation’s details.

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Selection runs both ways

Clicking a row highlights the shape on canvas; selecting a shape on canvas highlights its row. In dense scenes this two-way sync is the fastest way to find one object among forty, and a right-click on either side opens the same context actions.

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Header controls

• Group by: None → Label reorganizes the flat list into per-class groups, turning “forty rows” into “four folders”.
• Hide all objects clears the canvas view in one click, for when you need to see the raw image under your work.
• The sort control reorders the list without touching the annotations.

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Habits for heavy tasks

• Lock what is finished. Vertex handles and draggable boxes invite accidents; locking completed objects makes the rest of the session safe.
• Hide by class, work by class. Group by label, hide the finished classes, and the canvas only shows the work remaining.
• Quote IDs in comments. A pinned comment plus an instance ID is feedback that cannot be misread.

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Next steps