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Data Services

Semantic Segmentation

Pixel-level class labels across an image, for models where a boundary drives a measurement rather than a bounding box.

Semantic Segmentation source image
Semantic Segmentation
SourceLabelled output
Drag to compare the source frame with the labelled output.

Overview

Every pixel is assigned a class, which is what you need when the downstream task measures area, extent, or contact between regions rather than counting objects.

We agree the class taxonomy and edge-case rules with you before volume work starts, because ambiguity in the guidelines is what produces inconsistent datasets.

What you receive

  • Annotated dataset in your training format
  • Written annotation guidelines
  • Quality report with agreement metrics
  • Sample batch for sign-off before volume

Typical stack

  • CVAT
  • Label Studio
  • COCO
  • YOLO
  • Pascal VOC
  • Python

Capabilities

What this covers in practice

01

Written guidelines before volume

Class definitions, edge cases, and rejection criteria agreed and documented before bulk work begins.

02

Calibrated annotator teams

Annotators calibrated against a reference set, with agreement measured before they join a project.

03

Independent review pass

A second annotator reviews sampled output, with rework triggered on defined error thresholds.

04

Delivery in your format

COCO, YOLO, Pascal VOC, or a custom schema - exported to match your existing training pipeline.

Related

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Want to talk through a semantic segmentation project?

Send us the shape of the problem and we'll come back with a scoped approach, a timeline, and an honest read on what's achievable.