Label check report

YOLO dataset · demo_data/yolo

Malformed annotation error · 2

The line or record cannot be parsed; most trainers silently drop or crash on it.

Expected 5 values (box) or class + at least 3 x,y pairs (polygon), got 4
labels/train/img_009.txt:3

Degenerate polygon error · 1

Fewer than 3 distinct points or no area.

Polygon has (almost) zero area
labels/train/img_010.txt:2

Invalid class id error · 1

The class id is negative or not defined in the class list.

Class id 9 is not defined (defined: 0..2)
labels/train/img_006.txt:4

Box outside image error · 1

Part of the box or polygon lies outside the image.

Box extends 0.070 of image size outside the image
labels/train/img_001.txt:2

Unreadable image error · 1

The image file is corrupt or not a supported format, so training will crash or skip it.

Zero or negative size error · 1

Width or height is not positive, so the box has no area.

Box has non-positive size (w=0, h=0.2)
labels/train/img_002.txt:5

Same box, different class warning · 1

Two boxes overlap almost exactly but have different classes.

Boxes #1 and #5 overlap (IoU 1.00) but are class 1 (person) vs 2 (dog)
labels/train/img_005.txt:5

Duplicate box warning · 1

Two boxes of the same class overlap almost exactly.

Boxes #1 and #3 overlap (IoU 1.00), class 2 (dog)
labels/train/img_004.txt:3

Image without label file warning · 1

No label file exists. Fine for background images, a bug if the file was lost.

No label file for this image
labels/train/img_007.txt

Label file without image warning · 1

The label file has no matching image, usually after renaming or deleting images.

Very small box warning · 1

The shorter side is only a couple of pixels; often a mis-click.

Box is only 1.3x1.4 px
labels/train/img_003.txt:3

Empty annotation info · 1

The image has no objects. Intended for background images, otherwise unlabelled data.

Label file exists but contains no objects
labels/train/img_008.txt

Class distribution