NOTA AI

Convert between Datumaro and Custom Target JSON annotation formats with reversible conversion

Format Converter
Paste your JSON content to convert between Datumaro and Custom Target formats
Format Specifications
Supported formats and their structures

Datumaro Format

• Structure: items (each with image and annotations), nested categories.label.labels

• Geometry: Supports points (polygons) and bbox (bounding boxes)

• Categories: Nested structure with categories.label.labels array containing label definitions

• Label References: Annotations use label_id to reference category indices

Custom Target Format

• dtype: "label"

• img_name: Image filename

• imgHeight, imgWidth: Image dimensions

• objects: Array of annotation objects with label, polygon, z_order

• object_cnt, class_cnts: Object counts and class statistics

• Metadata: country, dataset, site, date, weather, light, labeled_date

Reversible Conversion

• Datumaro ↔ Custom Target: Bidirectional conversion for format verification

• Polygon Preservation: Maintains exact geometry during conversion cycles

• Label Mapping: Preserves annotation labels and their relationships

• Metadata Handling: Maintains image dimensions and annotation counts