Buffer¶
Class: BufferBlockV1
Source: inference.core.workflows.core_steps.fusion.buffer.v1.BufferBlockV1
Returns an array of the last length values passed to it. The newest
elements are added to the beginning of the array.
Useful for keeping a sliding window of images or detections for later processing, visualization, or comparison.
Type identifier¶
Use the following identifier in step "type" field: roboflow_core/buffer@v1to add the block as
as step in your workflow.
Properties¶
| Name | Type | Description | Refs |
|---|---|---|---|
name |
str |
Enter a unique identifier for this step.. | ❌ |
length |
int |
The number of elements to keep in the buffer. Older elements will be removed.. | ❌ |
pad |
bool |
If True, the end of the buffer will be padded with None values so its size is always exactly length.. |
❌ |
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 Buffer in version v1.
- inputs:
Rate Limiter,Identify Changes,Reference Path Visualization,Florence-2 Model,Triangle Visualization,Stitch OCR Detections,Continue If,Property Definition,Florence-2 Model,Circle Visualization,Keypoint Detection Model,Dot Visualization,Mask Visualization,Multi-Label Classification Model,Stability AI Image Generation,Polygon Zone Visualization,Velocity,SIFT Comparison,Stitch Images,LMM For Classification,Classification Label Visualization,VLM as Detector,Background Color Visualization,Byte Tracker,Data Aggregator,Camera Focus,Dimension Collapse,Local File Sink,Image Convert Grayscale,Color Visualization,Single-Label Classification Model,Detections Transformation,Expression,Google Gemini,Dynamic Zone,Gaze Detection,Pixelate Visualization,Perspective Correction,Clip Comparison,Image Preprocessing,Trace Visualization,Cosine Similarity,Absolute Static Crop,Corner Visualization,VLM as Classifier,Stability AI Inpainting,Path Deviation,Keypoint Detection Model,Detection Offset,Template Matching,VLM as Classifier,Identify Outliers,Environment Secrets Store,Halo Visualization,Roboflow Custom Metadata,Keypoint Visualization,SIFT,CSV Formatter,Webhook Sink,SIFT Comparison,Label Visualization,Image Contours,Single-Label Classification Model,Line Counter,Image Threshold,Time in Zone,Twilio SMS Notification,Detections Consensus,Line Counter Visualization,Byte Tracker,Polygon Visualization,Instance Segmentation Model,Object Detection Model,Time in Zone,Detections Filter,Grid Visualization,VLM as Detector,Bounding Box Visualization,Bounding Rectangle,Buffer,Size Measurement,OpenAI,Object Detection Model,Roboflow Dataset Upload,Model Comparison Visualization,Cache Set,Ellipse Visualization,Clip Comparison,Detections Stitch,Instance Segmentation Model,Slack Notification,YOLO-World Model,Pixel Color Count,CLIP Embedding Model,JSON Parser,Relative Static Crop,Crop Visualization,Image Blur,Email Notification,LMM,Google Vision OCR,Barcode Detection,Anthropic Claude,CogVLM,Llama 3.2 Vision,Multi-Label Classification Model,Detections Classes Replacement,QR Code Detection,Distance Measurement,Model Monitoring Inference Aggregator,Segment Anything 2 Model,Dynamic Crop,Line Counter,Detections Stabilizer,OCR Model,Image Slicer,First Non Empty Or Default,Path Deviation,OpenAI,Cache Get,Roboflow Dataset Upload,Byte Tracker,Dominant Color,Blur Visualization,Delta Filter - outputs:
Line Counter,Time in Zone,Line Counter Visualization,Triangle Visualization,Detections Consensus,Instance Segmentation Model,Florence-2 Model,Reference Path Visualization,Polygon Visualization,Object Detection Model,Time in Zone,Florence-2 Model,Keypoint Detection Model,Dot Visualization,Grid Visualization,Circle Visualization,Mask Visualization,VLM as Detector,Bounding Box Visualization,Polygon Zone Visualization,Size Measurement,Object Detection Model,Buffer,Cache Set,Clip Comparison,Ellipse Visualization,LMM For Classification,VLM as Detector,Classification Label Visualization,Instance Segmentation Model,YOLO-World Model,Crop Visualization,Email Notification,Color Visualization,Anthropic Claude,Llama 3.2 Vision,Google Gemini,Perspective Correction,Clip Comparison,Line Counter,Trace Visualization,Corner Visualization,VLM as Classifier,Keypoint Detection Model,Path Deviation,VLM as Classifier,Path Deviation,Halo Visualization,OpenAI,Webhook Sink,Label Visualization
Input and Output Bindings¶
The available connections depend on its binding kinds. Check what binding kinds
Buffer in version v1 has.
Bindings
-
input
data(Union[*,image,list_of_values]): Reference to step outputs at depth level n to be concatenated and moved into level n-1..
-
output
output(list_of_values): List of values of any type.
Example JSON definition of step Buffer in version v1
{
"name": "<your_step_name_here>",
"type": "roboflow_core/buffer@v1",
"data": "$steps.visualization",
"length": 5,
"pad": true
}