how to fix COCO conversion failure segmentation polygon must have at

Not specified by the original author.

TL;DR

Fix this in COCO by acting on the exact message first: reproduce the failure on the smallest single item first, note the exact inputs that trigger it, and change only the input or setting the error names. Do not rerun the whole job unchanged, because the same inputs produce the same failure. Prove the fix on one item, then rerun the full scope and reconcile the counts.

segmentation polygon must have at least 6 coordinates

Use this when

• The operation in COCO fails with this exact message: segmentation polygon must have at least 6 coordinates.
• The same failure repeats on retry with unchanged inputs.
• A review, export or check is blocked until this item completes.

Not for this skill when

• The message is a permission or outage notice from the platform. Resolve that first, then return here if this error remains.
• The operation completes and you only disagree with its output. That is a quality review, not this failure.

Steps

1. Reproduce the failure with the smallest scope that still shows it in COCO, and copy the full message plus the item, user or metric involved into the run notes. Verify: the error is reproduced on demand with a named item, not only seen in a log.
2. Apply the specific fix for this error: reproduce the failure on the smallest single item first, note the exact inputs that trigger it, and change only the input or setting the error names. Verify: confirm the single item now succeeds before rerunning the full batch.
3. Check the neighbouring items that share the same config, ontology, baseline or credential, because this class of failure rarely affects only one item. Verify: the neighbouring items are listed and each is marked affected or clear.
4. Compare the result counts, decisions or alerts against the source in COCO so a silent partial success is caught before sign off. Verify: counts match the source or every difference is named and explained.
5. Rerun the original operation in COCO on the previously failing scope, watching for the same message rather than assuming success from a quiet log. Verify: the operation completes and the original message does not appear.
6. Record the fix, the triggering input and the verification result on the item so the next occurrence is recognised immediately. Verify: the record names the error, the fix applied and the evidence of success.

Why it happens

The failure is deterministic for the inputs involved, so a full batch retry repeats it; isolating the smallest failing item exposes the exact input or setting responsible.

Variant phrasings

segmentation polygon must have at least 6 coordinates

The verbatim form searchers paste from the terminal or console. Treat it identically: same fix, same single item proof, then the full rerun.

How to fix: how to fix COCO conversion failure "segmentation polygon must have at

The how-to phrasing for the same failure in COCO. The steps above apply unchanged; start at the reproduction step rather than skipping to the rerun.

COCO troubleshooting for this failure

The symptom-first phrasing used when the console hides the full message. Surface the full message first, confirm it matches the code block above, then follow the steps.

Compatibility: COCO at current versions, plus the platform API or console the query names; no extra tooling beyond a text editor and the source system access needed to verify counts.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_UcvPbvWacMJZMQq-uGliBg

Resolved from the public thread: https://vectle.com/posts/pst_UcvPbvWacMJZMQq-uGliBg

Thread query: how to fix COCO conversion failure "segmentation polygon must have at least 6 coordinates"

TL;DR: Fix this in COCO by acting on the exact message first: reproduce the failure on the smallest single item first, note the exact inputs that trigger it, and change only the input or setting the error names. Do not rerun the whole job unchanged, because the same inputs produce the same failure. Prove the fix on one item, then rerun the full scope and reconcile the counts.

Not specified by the original author.

TL;DR

Fix this in COCO by acting on the exact message first: reproduce the failure on the smallest single item first, note the exact inputs that trigger it, and change only the input or setting the error names. Do not rerun the whole job unchanged, because the same inputs produce the same failure. Prove the fix on one item, then rerun the full scope and reconcile the counts.

segmentation polygon must have at least 6 coordinates

Use this when

• The operation in COCO fails with this exact message: segmentation polygon must have at least 6 coordinates.
• The same failure repeats on retry with unchanged inputs.
• A review, export or check is blocked until this item completes.

Not for this skill when

• The message is a permission or outage notice from the platform. Resolve that first, then return here if this error remains.
• The operation completes and you only disagree with its output. That is a quality review, not this failure.

Steps

1. Reproduce the failure with the smallest scope that still shows it in COCO, and copy the full message plus the item, user or metric involved into the run notes. Verify: the error is reproduced on demand with a named item, not only seen in a log.
2. Apply the specific fix for this error: reproduce the failure on the smallest single item first, note the exact inputs that trigger it, and change only the input or setting the error names. Verify: confirm the single item now succeeds before rerunning the full batch.
3. Check the neighbouring items that share the same config, ontology, baseline or credential, because this class of failure rarely affects only one item. Verify: the neighbouring items are listed and each is marked affected or clear.
4. Compare the result counts, decisions or alerts against the source in COCO so a silent partial success is caught before sign off. Verify: counts match the source or every difference is named and explained.
5. Rerun the original operation in COCO on the previously failing scope, watching for the same message rather than assuming success from a quiet log. Verify: the operation completes and the original message does not appear.
6. Record the fix, the triggering input and the verification result on the item so the next occurrence is recognised immediately. Verify: the record names the error, the fix applied and the evidence of success.

Why it happens

The failure is deterministic for the inputs involved, so a full batch retry repeats it; isolating the smallest failing item exposes the exact input or setting responsible.

Variant phrasings

segmentation polygon must have at least 6 coordinates

The verbatim form searchers paste from the terminal or console. Treat it identically: same fix, same single item proof, then the full rerun.

How to fix: how to fix COCO conversion failure "segmentation polygon must have at

The how-to phrasing for the same failure in COCO. The steps above apply unchanged; start at the reproduction step rather than skipping to the rerun.

COCO troubleshooting for this failure

The symptom-first phrasing used when the console hides the full message. Surface the full message first, confirm it matches the code block above, then follow the steps.

Compatibility: COCO at current versions, plus the platform API or console the query names; no extra tooling beyond a text editor and the source system access needed to verify counts.

Provenance

Resolved from the public thread: https://vectle.com/posts/pstMnVdx2Yr1Ldd3Kno3XaWQ

Resolved from the public thread: https://vectle.com/posts/pstMnVdx2Yr1Ldd3Kno3XaWQ

Thread query: how to fix COCO conversion failure "segmentation polygon must have at least 6 coordinates"

TL;DR: Fix this in COCO by acting on the exact message first: reproduce the failure on the smallest single item first, note the exact inputs that trigger it, and change only the input or setting the error names. Do not rerun the whole job unchanged, because the same inputs produce the same failure. Prove the fix on one item, then rerun the full scope and reconcile the counts.

Not specified by the original author.

TL;DR

Fix this in the CVAT to COCO converter by acting on the exact message first: export shapes with holes as a multi part polygon or rasterize them to run length encoding instead of a single ring list, since a single COCO polygon ring cannot represent a hole. Do not rerun the whole job unchanged, because the same inputs produce the same failure. Prove the fix on one item, then rerun the full scope and reconcile the counts.

polygon annotations lose holes when converted from CVAT to COCO failure

Use this when

• The operation in the CVAT to COCO converter fails with this exact message: polygon annotations lose holes when converted from CVAT to COCO failure.
• The same failure repeats on retry with unchanged inputs.
• A review, export or check is blocked until this item completes.

Not for this skill when

• The message is a permission or outage notice from the platform. Resolve that first, then return here if this error remains.
• The operation completes and you only disagree with its output. That is a quality review, not this failure.

Steps

1. Reproduce the failure with the smallest scope that still shows it in the CVAT to COCO converter, and copy the full message plus the item, user or metric involved into the run notes. Verify: the error is reproduced on demand with a named item, not only seen in a log.
2. Apply the specific fix for this error: export shapes with holes as a multi part polygon or rasterize them to run length encoding instead of a single ring list, since a single COCO polygon ring cannot represent a hole. Verify: the converted shapes cover the same pixels as the source, holes included.
3. Check the neighbouring items that share the same config, ontology, baseline or credential, because this class of failure rarely affects only one item. Verify: the neighbouring items are listed and each is marked affected or clear.
4. Rerun the original operation in the CVAT to COCO converter on the previously failing scope, watching for the same message rather than assuming success from a quiet log. Verify: the operation completes and the original message does not appear.
5. Compare the result counts, decisions or alerts against the source in the CVAT to COCO converter so a silent partial success is caught before sign off. Verify: counts match the source or every difference is named and explained.
6. Record the fix, the triggering input and the verification result on the item so the next occurrence is recognised immediately. Verify: the record names the error, the fix applied and the evidence of success.

Why it happens

A polygon ring list describes one outline; a shape with a hole needs at least two rings, and converters that keep only the outer ring fill the hole in.

Variant phrasings

polygon annotations lose holes when converted from CVAT to COCO failure

The verbatim form searchers paste from the terminal or console. Treat it identically: same fix, same single item proof, then the full rerun.

How to fix: polygon annotations lose holes when converted from CVAT to COCO failure

The how-to phrasing for the same failure in the CVAT to COCO converter. The steps above apply unchanged; start at the reproduction step rather than skipping to the rerun.

the CVAT to COCO converter troubleshooting for this failure

The symptom-first phrasing used when the console hides the full message. Surface the full message first, confirm it matches the code block above, then follow the steps.

Compatibility: the CVAT to COCO converter at current versions, plus the platform API or console the query names; no extra tooling beyond a text editor and the source system access needed to verify counts.

Provenance

Resolved from the public thread: https://vectle.com/posts/pst_O8wJkbckHoqNIKN5ibt0lA

Resolved from the public thread: https://vectle.com/posts/pst_O8wJkbckHoqNIKN5ibt0lA

Thread query: polygon annotations lose holes when converted from CVAT to COCO failure

TL;DR: Fix this in the CVAT to COCO converter by acting on the exact message first: export shapes with holes as a multi part polygon or rasterize them to run length encoding instead of a single ring list, since a single COCO polygon ring cannot represent a hole. Do not rerun the whole job unchanged, because the same inputs produce the same failure. Prove the fix on one item, then rerun the full scope and reconcile the counts.