Seg Preview¶
Class: SegPreviewBlockV1
Source: inference.core.workflows.core_steps.models.foundation.seg_preview.v1.SegPreviewBlockV1
Seg Preview
Type identifier¶
Use the following identifier in step "type" field: roboflow_core/seg-preview@v1to add the block as
as step in your workflow.
Properties¶
| Name | Type | Description | Refs |
|---|---|---|---|
name |
str |
Enter a unique identifier for this step.. | ❌ |
class_names |
Union[List[str], str] |
List of classes to recognise. | ✅ |
threshold |
float |
Threshold for predicted mask scores. | ✅ |
The Refs column marks possibility to parametrise the property with dynamic values available
in workflow runtime. See Bindings for more info.
Runtime compatibility¶
-
requires_internet— air-gapped / offline deployments - This block depends on a service that is not reachable from fully offline / air-gapped deployments.
-
hard— runtimeself_hosted_cpu,self_hosted_gpu,inference_pipeline - Seg Preview calls the Roboflow-internal API_BASE_URL/inferenceproxy/seg-preview endpoint, which is only reachable from Roboflow-hosted runtimes (HOSTED_SERVERLESS, DEDICATED_DEPLOYMENT). Self-hosted deployments cannot run this block.
Available Connections¶
Compatible Blocks
Check what blocks you can connect to Seg Preview in version v1.
- inputs:
Halo Visualization,Stitch OCR Detections,GLM-OCR,Image Threshold,Stitch Images,Morphological Transformation,Classification Label Visualization,Twilio SMS/MMS Notification,Crop Visualization,Icon Visualization,Stability AI Outpainting,Blur Visualization,VLM As Classifier,Reference Path Visualization,MoonshotAI Kimi,OpenAI,Google Gemini,Anthropic Claude,Webhook Sink,Camera Focus,QR Code Generator,Size Measurement,Model Comparison Visualization,Florence-2 Model,MQTT Writer,Trace Visualization,Ellipse Visualization,Anthropic Claude,Dot Visualization,Perspective Correction,Label Visualization,Image Convert Grayscale,Florence-2 Model,Text Display,Qwen-VL,Llama 3.2 Vision,Roboflow Dataset Upload,PLC ModbusTCP,Image Blur,Keypoint Detection Model,Absolute Static Crop,Gaze Detection,SIFT,CSV Formatter,LMM,Google Gemini,Dimension Collapse,EasyOCR,Qwen 3.5 API,Qwen 3.6 API,Local File Sink,Google Gemma,Triangle Visualization,Camera Focus,Contrast Equalization,Polygon Visualization,OpenAI,Heatmap Visualization,Clip Comparison,Google Gemma API,Detections List Roll-Up,Contrast Enhancement,Google Gemini,PLC EthernetIP,Halo Visualization,Color Visualization,Morphological Transformation,MoonshotAI Kimi,Stitch OCR Detections,LMM For Classification,Event Writer,VLM As Detector,Llama 3.2 Vision,Buffer,Polygon Visualization,Image Stack,Email Notification,Mask Visualization,Anthropic Claude,Identify Changes,Stability AI Inpainting,Roboflow Asset Library Attributes,Microsoft SQL Server Sink,Keypoint Visualization,OpenAI,Background Subtraction,Multi-Label Classification Model,Roboflow Vision Events,Twilio SMS Notification,Email Notification,Image Slicer,Image Contours,Line Counter Visualization,CogVLM,Object Detection Model,Image Preprocessing,OPC UA Writer Sink,Dynamic Crop,Depth Estimation,Bounding Box Visualization,Motion Detection,Qwen3.5-VL,Current Time,Cosine Similarity,Clip Comparison,Corner Visualization,Polygon Zone Visualization,Camera Calibration,Roboflow Dataset Upload,Grid Visualization,Stability AI Image Generation,OpenAI,S3 Sink,Circle Visualization,Image Slicer,OCR Model,Single-Label Classification Model,Relative Static Crop,Roboflow Custom Metadata,Instance Segmentation Model,Model Monitoring Inference Aggregator,OpenAI-Compatible LLM,Slack Notification,OpenRouter,SIFT Comparison,Pixelate Visualization,Google Vision OCR,Background Color Visualization,Dynamic Zone - outputs:
Halo Visualization,Overlap Analysis,SAM 3 Interactive,Crop Visualization,Icon Visualization,Detections Transformation,Blur Visualization,ByteTrack Tracker,Detections Classes Replacement,Byte Tracker,Track Class Lock,Size Measurement,Mask Edge Snap,Model Comparison Visualization,Path Deviation,Florence-2 Model,Trace Visualization,Ellipse Visualization,BoT-SORT Tracker,Dot Visualization,Perspective Correction,Label Visualization,Florence-2 Model,Per-Class Confidence Filter,Roboflow Dataset Upload,Detections Stabilizer,Detections Merge,Velocity,OC-SORT Tracker,Triangle Visualization,Camera Focus,Time in Zone,Line Counter,SORT Tracker,SAM2 Video Tracker,Polygon Visualization,Heatmap Visualization,Detections Stitch,Detections List Roll-Up,Halo Visualization,Color Visualization,Event Writer,Polygon Visualization,Mask Visualization,Detections Filter,Distance Measurement,Stability AI Inpainting,Bounding Rectangle,PTZ Tracking (ONVIF),Time in Zone,Overlap Filter,Roboflow Vision Events,Mask Area Measurement,Detection Offset,Detections Consensus,Byte Tracker,Dynamic Crop,Path Deviation,Byte Tracker,Bounding Box Visualization,Detections Combine,Roboflow Dataset Upload,Corner Visualization,Segment Anything 2 Model,Circle Visualization,Time in Zone,Roboflow Custom Metadata,Model Monitoring Inference Aggregator,Detection Event Log,Pixelate Visualization,Background Color Visualization,Line Counter,Dynamic Zone
Input and Output Bindings¶
The available connections depend on its binding kinds. Check what binding kinds
Seg Preview in version v1 has.
Bindings
-
input
images(image): The image to infer on..class_names(Union[string,list_of_values]): List of classes to recognise.threshold(float): Threshold for predicted mask scores.
-
output
predictions(instance_segmentation_prediction): Prediction with detected bounding boxes and segmentation masks in form of sv.Detections(...) object.
Example JSON definition of step Seg Preview in version v1
{
"name": "<your_step_name_here>",
"type": "roboflow_core/seg-preview@v1",
"images": "$inputs.image",
"class_names": [
"car",
"person"
],
"threshold": 0.3
}