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

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"
        }
    ]
}