nc3 annotate

Help build the ground truth for industrial detections.

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nc3 annotate

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nc3 annotate

1

Level progress

🚀 Mission

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How it works

Start a block. Each photo is served to a few people independently.
Draw a box around every visible nut, stud, hole, slot, threaded hole and spot weld, then pick its class. Dashed boxes are the model's guesses: fix or delete them.
A accepts the photo, R rejects it (blurry, no features, wrong subject…).
Experts check submissions. Your accuracy is how well you match them, and it earns bonus points.

I have an expert key

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Class (keys 1-7)

Model guesses ≥ 0.40

User submissions

Boxes

Drag = box · click = select · drag / corners = move / resize · wheel = zoom · space+drag = pan · Del = delete · D = difficult · F = fit · Z = undo

🎉

Block complete!

Keys

drag on image	draw a box, then pick its class (1-7 or click; Enter = last class; Esc = cancel)
click a box	select it: 1-7 changes the class, Del deletes, D marks it difficult
drag box / corner	move / resize the selected box · double-click: pick the class again · right-click: delete
A or Enter	accept the photo with the boxes shown → next
R	reject the photo (pick a reason) → next
← →	previous / next photo (edits are kept as a draft)
X	drop the unchecked model guesses
wheel / pinch · F	zoom at the cursor · fit
space+drag, right-drag	pan
Z, Tab, L	undo · next box · hide labels

Box each visible feature tightly. threaded hole: threads visible inside the opening. spot weld: the visible weld mark. ignore / exclude area: box clutter, fixtures, clamp hardware or anything you're unsure about. It is left out of scoring. Mark partly hidden or ambiguous boxes difficult (D).