Polygon Annotation Services

High-Precision Object Outlining for AI/ML Models That Demand Pixel-Perfect Accuracy    

Polygon annotation of various fruits, highlighting their irregular shapes for accurate object detection.

At Precise BPO Solution, we specialize in polygon annotation - a precise data labeling technique used to capture the exact contours of irregularly shaped objects in images and video. Our annotators draw detailed, vertex-accurate polygons that remove background noise and provide clean, high-fidelity ground truth for supervised learning.

Polygon annotation is essential when simple bounding boxes or ellipses won’t reliably represent object boundaries. It’s the method of choice for tasks that require accurate shape representation: logos, road signs, vehicle silhouettes, anatomical structures, product outlines, animals, foliage and more.

Tight, accurate polygons around complex shapes - enabling higher model accuracy for autonomous vehicles, medical imaging, retail, agriculture and beyond.

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Industry use cases

Autonomous Vehicles

Road signs, vehicle contours, pedestrians, lane elements and occlusion handling.

Medical Imaging

Organ and lesion contours, precise tumor boundaries, pathology slide annotation.

Retail & E-commerce

Product silhouettes, apparel edges, complex packaging shapes.

Agriculture

Leaf boundaries, fruit/plant segmentation, canopy/weed separation.

Sports Analytics

Athlete posture outlines, ball and equipment contours for performance tracking.

Aerial & Satellite Imagery

Building footprints, coastline lines, vegetation patches, land-use segmentation.

Construction & AEC

Annotate building components, defects, or equipment in images captured from job sites.

Our capabilities & services

What we provide

Manual polygon annotation (single & multi-class)
Manual polygon annotation (single & multi-class)
Instance polygons for overlapping or touching objects
Instance polygons for overlapping or touching objects
Hierarchical polygons (holes, nested shapes)
Hierarchical polygons (holes, nested shapes)
Video frame polygon tracking & interpolation
Video frame polygon tracking & interpolation
Quality assurance (cross-review, IoU / mIoU checks)
Quality assurance (cross-review, IoU / mIoU checks)
Domain-specific labeling guidelines & ontology creation
Domain-specific labeling guidelines & ontology creation
Format & export: COCO, Pascal VOC, YOLO (polygons → masks/bboxes), custom JSON/XML, TFRecord, and any client schema
Format & export: COCO, Pascal VOC, YOLO (polygons - masks/bboxes), custom JSON/XML, TFRecord, and any client schema

Workflow - Polygon Annotation Services

Polygon Annotation Services workflow

Kickoff & guidelines
We collaborate to build a clear labeling guideline and sample set.

Pilot phase
Small batch annotated to validate quality, metrics and workflow.

Scale & iterate
Scale the team and tune rules based on model feedback.

QA & delivery
Final validation, metric reporting and delivery in requested formats.

Support
Post-delivery assistance for model fine-tuning and re-labeling.

What is Polygon Annotation?

Polygon annotation is a type of image annotation where objects are outlined using a series of connected points

Polygon annotation is a type of image annotation where objects are outlined using a series of connected points (vertices) to form a closed polygon. This allows the AI model to learn from the true shape of the object instead of a loose approximation like a rectangle.

By removing background clutter and noise, this method enhances the model’s ability to recognize, localize, and classify objects with greater precision-making it ideal for applications that require fine-grained visual analysis.

Use Cases - Polygon Annotation Services

Fish Species Identification

Client Need: A marine research organization wanted to train AI models to automatically identify and classify different fish species from underwater footage.

Solution: Precise BPO Solution annotated thousands of underwater images using precise polygon boundaries around each fish, capturing shape, size, and fin details.

Result: The AI model achieved high species recognition accuracy, reducing manual identification time and improving marine biodiversity tracking.

Agriculture Field Analysis

Client Need: An agri-tech company wanted to identify crops, soil types, and weeds from aerial drone images.

Solution: We annotated farmland images using polygon boundaries around different crop areas, soil regions, and weed patches.

Result: The client improved precision farming, optimized pesticide use, and increased crop yield by leveraging accurate segmented data.

Retail Shelf Monitoring

Client Need: A retail analytics firm needed to track product placement and shelf space utilization in stores.

Solution: Precise BPO Solution used polygon annotation to mark products, shelves, and empty spaces in retail images.

Result: Enabled automated shelf monitoring, helping retailers improve planogram compliance and boost sales efficiency.

Why Choose Precise BPO for Polygon Annotation

precise bpo polygon annotation services
14+ Years of Experience

With over a decade of industry expertise, we have built a strong reputation for delivering accurate and reliable data annotation services across diverse sectors.

540+ Skilled Employees

Our large, well-trained workforce allows us to manage projects of any scale efficiently-whether you need a small pilot or full-scale production.

Proven Expertise

We consistently deliver high-quality polygon annotations tailored to the specific needs of your machine learning pipeline, ensuring optimal model performance.

Scalable Teams

Our flexible resourcing model adapts to your project size and timelines, supporting everything from pilot batches to enterprise-level datasets.

Strict QA

Entering Information from Contracts & Agreements, Creating Documents using Provided Pictures & Information.

Security & Compliance

We ensure secure data handling through encrypted transfers, NDAs, and strict confidentiality protocols.

Flexible Delivery

We provide data in your required formats and seamlessly integrate with your existing annotation tools and MLOps pipelines.

Responsive Support

A dedicated project manager oversees your project from start to finish, ensuring clear communication, on-time delivery, and iterative guideline refinement.

Ready to improve your model’s precision with clean polygon labels?
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Ready to get started?
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