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

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"
        }
    ]
}