Property Definition

Class: PropertyDefinitionBlockV1

Source: inference.core.workflows.core_steps.formatters.property_definition.v1.PropertyDefinitionBlockV1

Define a field using properties from previous workflow steps.

Example use-cases: * extraction of all class names for object-detection predictions * extraction of class / confidence from classification result * extraction ocr text from OCR result

Type identifier

Use the following identifier in step "type" field: roboflow_core/property_definition@v1to add the block as as step in your workflow.

Properties

Name	Type	Description	Refs
name	str	Enter a unique identifier for this step..	❌
operations	List[Union[ClassificationPropertyExtract, ConvertDictionaryToJSON, ConvertImageToBase64, ConvertImageToJPEG, DetectionsFilter, DetectionsOffset, DetectionsPropertyExtract, DetectionsRename, DetectionsSelection, DetectionsShift, DetectionsToDictionary, Divide, ExtractDetectionProperty, ExtractFrameMetadata, ExtractImageProperty, LookupTable, Multiply, NumberRound, NumericSequenceAggregate, PickDetectionsByParentClass, RandomNumber, SequenceAggregate, SequenceApply, SequenceElementsCount, SequenceLength, SequenceMap, SortDetections, StringMatches, StringSubSequence, StringToLowerCase, StringToUpperCase, TimestampToISOFormat, ToBoolean, ToNumber, ToString]]	List of operations to perform on the data..	❌

The Refs column marks possibility to parametrise the property with dynamic values available in workflow runtime. See Bindings for more info.

Available Connections

Compatible Blocks

Check what blocks you can connect to Property Definition in version v1.

• inputs: CogVLM, Anthropic Claude, Cache Set, Google Vision OCR, OpenAI, Detections Classes Replacement, Florence-2 Model, Pixelate Visualization, Single-Label Classification Model, SIFT, Moondream2, Stability AI Image Generation, YOLO-World Model, Object Detection Model, Overlap Filter, Cosine Similarity, Triangle Visualization, Model Comparison Visualization, LMM, Segment Anything 2 Model, Keypoint Detection Model, Line Counter, Google Gemini, Byte Tracker, Image Contours, Roboflow Custom Metadata, Circle Visualization, Detections Merge, Trace Visualization, Webhook Sink, Property Definition, LMM For Classification, First Non Empty Or Default, Detections Stitch, SIFT Comparison, JSON Parser, Clip Comparison, Line Counter Visualization, Identify Outliers, Dynamic Zone, Background Color Visualization, Florence-2 Model, Stitch OCR Detections, Image Slicer, Roboflow Dataset Upload, Email Notification, Camera Focus, Environment Secrets Store, Path Deviation, Blur Visualization, Label Visualization, Stability AI Inpainting, Image Preprocessing, Ellipse Visualization, Delta Filter, ONVIF Control, VLM as Classifier, Clip Comparison, Time in Zone, Rate Limiter, Dynamic Crop, Single-Label Classification Model, OpenAI, Keypoint Visualization, Dominant Color, OCR Model, Expression, Keypoint Detection Model, Image Convert Grayscale, Gaze Detection, Detection Offset, Distance Measurement, SmolVLM2, Dimension Collapse, Qwen2.5-VL, OpenAI, VLM as Detector, SIFT Comparison, Mask Visualization, Image Slicer, Barcode Detection, Path Deviation, VLM as Detector, CSV Formatter, Polygon Zone Visualization, Crop Visualization, Classification Label Visualization, Reference Path Visualization, Multi-Label Classification Model, Twilio SMS Notification, Bounding Box Visualization, Size Measurement, Perspective Correction, Slack Notification, Pixel Color Count, Polygon Visualization, Detections Transformation, VLM as Classifier, Instance Segmentation Model, Data Aggregator, Color Visualization, Identify Changes, Detections Consensus, Image Threshold, Absolute Static Crop, Stitch Images, Multi-Label Classification Model, Line Counter, Detections Filter, Dot Visualization, QR Code Detection, Instance Segmentation Model, Model Monitoring Inference Aggregator, Detections Stabilizer, Template Matching, Bounding Rectangle, Roboflow Dataset Upload, Image Blur, Time in Zone, Grid Visualization, CLIP Embedding Model, Object Detection Model, Depth Estimation, Llama 3.2 Vision, Byte Tracker, Continue If, Byte Tracker, Halo Visualization, Corner Visualization, Camera Calibration, Cache Get, Buffer, Relative Static Crop, Velocity, Local File Sink
• outputs: CogVLM, Anthropic Claude, Cache Set, OpenAI, Google Vision OCR, Detections Classes Replacement, Florence-2 Model, Pixelate Visualization, Single-Label Classification Model, SIFT, Moondream2, Stability AI Image Generation, YOLO-World Model, Object Detection Model, Overlap Filter, Triangle Visualization, Cosine Similarity, Model Comparison Visualization, LMM, Segment Anything 2 Model, Keypoint Detection Model, Line Counter, Google Gemini, Byte Tracker, Image Contours, Roboflow Custom Metadata, Circle Visualization, Trace Visualization, Detections Merge, Webhook Sink, Property Definition, LMM For Classification, First Non Empty Or Default, Detections Stitch, SIFT Comparison, JSON Parser, Clip Comparison, Line Counter Visualization, Identify Outliers, Dynamic Zone, Background Color Visualization, Florence-2 Model, Stitch OCR Detections, Image Slicer, Roboflow Dataset Upload, Email Notification, Camera Focus, Path Deviation, Stability AI Inpainting, Label Visualization, Blur Visualization, Image Preprocessing, Ellipse Visualization, Delta Filter, ONVIF Control, VLM as Classifier, Clip Comparison, Time in Zone, Rate Limiter, Dynamic Crop, Single-Label Classification Model, OpenAI, Keypoint Visualization, Dominant Color, OCR Model, Expression, Keypoint Detection Model, Image Convert Grayscale, Gaze Detection, Detection Offset, Distance Measurement, SmolVLM2, Dimension Collapse, Qwen2.5-VL, VLM as Detector, OpenAI, SIFT Comparison, Mask Visualization, Image Slicer, Barcode Detection, VLM as Detector, Path Deviation, CSV Formatter, Polygon Zone Visualization, Crop Visualization, Classification Label Visualization, Reference Path Visualization, Multi-Label Classification Model, Twilio SMS Notification, Bounding Box Visualization, Size Measurement, Perspective Correction, Slack Notification, Pixel Color Count, Polygon Visualization, Detections Transformation, VLM as Classifier, Instance Segmentation Model, Data Aggregator, Color Visualization, Identify Changes, Detections Consensus, Image Threshold, Absolute Static Crop, Stitch Images, Multi-Label Classification Model, Line Counter, Dot Visualization, QR Code Detection, Detections Filter, Instance Segmentation Model, Detections Stabilizer, Model Monitoring Inference Aggregator, Template Matching, Bounding Rectangle, Roboflow Dataset Upload, Image Blur, Time in Zone, Grid Visualization, CLIP Embedding Model, Object Detection Model, Depth Estimation, Llama 3.2 Vision, Byte Tracker, Continue If, Byte Tracker, Halo Visualization, Corner Visualization, Camera Calibration, Cache Get, Buffer, Relative Static Crop, Velocity, Local File Sink

Input and Output Bindings

The available connections depend on its binding kinds. Check what binding kinds Property Definition in version v1 has.

Bindings

• input

  • data (*): Data to extract property from..

• output

  • output (*): Equivalent of any element.

Example JSON definition of step Property Definition in version v1

{
    "name": "<your_step_name_here>",
    "type": "roboflow_core/property_definition@v1",
    "data": "$steps.my_step.predictions",
    "operations": [
        {
            "property_name": "class_name",
            "type": "DetectionsPropertyExtract"
        }
    ]
}