Collecting

How to identify LEGO parts from photos and check the result

A photo can narrow the search for an unfamiliar part, but the result still needs checking. Isolate the piece, make its shape easy to see, and compare the returned candidates with the object in your hand.

01 · photo, compare, confirm

Make the photo easy to inspect.

Put one part in the frame against a simple background. Use even light and sharp focus so the shape, color, and markings are visible. A clean photo gives a candidate list something useful to compare; it does not make the candidate a verdict.

Use one subject rather than a mixed pile.
Keep the whole piece in focus and fill enough of the frame to see its shape.
Try another angle when the underside or a marking carries the important clue.

Checked example

Blue LEGO Flag 4 x 1 Wave part lying alone on a plain light surface. — The same part, photographed alone against a plain surface — not the exact photo behind the result shown next to it.

Brick Pulse candidate matches list showing Flag 4 x 1 Wave Left, 4495a, 82% match, highlighted first, and Flag 4 x 1 Wave Right, 4495b, 55% match. — The candidate list for that part: Flag 4 x 1 Wave Left, 4495a, at an 82% match, and Flag 4 x 1 Wave Right, 4495b, at 55%. Comparing 4495a against the physical piece confirmed it as the correct part. The percentage is the scanner's match score, not an accuracy rate — this is one checked example, not a claim about how often the scanner gets it right.

02 · inspect the distinguishing details

Compare the object, not just the label.

Look at the features that separate similar pieces: stud count, clips, holes, underside markings, printed details, and possible color or variant differences. Treat those as inspection prompts, not as a complete taxonomy or a promise that every variation will be recognized.

If the candidate name looks plausible but the shape or print does not match the piece in your hand, keep checking. A familiar label is not evidence by itself.

03 · review the candidate list

Check name, identifier, and shape together.

Read the candidate name and identifier, then compare the visible shape and details with the actual part. A recognition score, when a provider supplies one, can help order candidates; it is not proven accuracy and does not replace a human check.

Illustrative example · synthetic candidate reviewPhoto subject: a red Plate 1 × 2.

Candidate shownTechnic axle 3 · blue. Shape and color do not agree.

Human correctionOperator selects Plate 1 × 2 · red after comparing the piece.

The example shows a correction decision, not a benchmark. It does not claim a score, accuracy rate, exhaustive catalog, or automatic match.

04 · when the first result is wrong

Retry deliberately, then use a manual path.

When no candidate fits, change one useful input: isolate the background, improve the light, refocus, or show the underside. If a marking or variant is the deciding detail, include it in the next view. Avoid endless retries that do not add information.

Manual identification remains appropriate when the candidate list does not settle the question. Record what you verified and leave the part unidentified until you can make a deliberate choice. This article does not claim a particular manual-identification control.

05 · keep the result honest

Confirmation is not a count or an ownership decision.

Confirm a candidate only after comparing it with the physical piece. A confirmed identifier is a reviewed identification result; it does not count pieces, create an inventory lot, or prove ownership. Add the physical location and quantity separately when you know them.

An Owned badge belongs to the collection record you maintain. A scan, candidate, or wanted list cannot create that ownership fact on its own.

06 · understand photo handling

Upload only material you may use.

Photograph only material you are entitled to use. Crop names, labels, people, and other unrelated private details out of the frame before uploading. The recognition provider is api.brickognize.com; the scan photo is sent for recognition without a credential, account ID, or store ID.

Saving a photo for a future in-house recognizer is an optional per-scan choice that starts unticked on every scan. Without consent, the photo is not kept. Consented donated photos can be deleted account-wide from the privacy settings danger zone; deletion is immediate and irreversible, has no per-photo choice, and cannot untrain a model that already used a photo. There is no automatic retention sweep.

See the Privacy Policy for the broader handling description.

07 · common questions

Know when the photo is not enough.

Can the scanner identify a bulk pile?: This guide uses one subject per photo and does not claim bulk-pile or multiple-part recognition.
What if the important detail is hidden?: Try a clear angle that shows the underside, hole, clip, marking, print, or other distinguishing detail. If it remains hidden, do not treat the candidate as settled.
Will it know every color or variant?: No guarantee is made about exhaustive variants. Compare the physical part and correct the candidate when the details disagree.
Does confirming a candidate create an Owned badge?: No. Confirmation records a reviewed identifier; ownership belongs to your collection record and is entered separately.

08 · next step

Check the match before you keep the record.

See the part-identification feature for the private-preview workflow and collector records for the next step after review. Neither link promises accuracy, automatic ownership, exhaustive recognition, or public availability.

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