The Foundation of Every Successful AI Model

At Gemperts, we understand that the quality of training data determines the quality of your AI. Our Data Annotation services provide precisely labelled datasets across image, video, audio, and text modalities — delivered at scale with rigorous quality assurance. Our expert annotators and AI-assisted tooling produce labels that meet the exact specifications of your model training pipeline. From bounding boxes and semantic segmentation to NLP intent tagging and audio transcription, we handle every annotation task with the accuracy and consistency your models demand.

Data Annotation Services We Offer

Image Annotation

Comprehensive image labelling including bounding boxes, polygon segmentation, keypoint marking, semantic and instance segmentation for computer vision model training.

Video Annotation

Frame-by-frame object tracking, activity recognition labelling, event segmentation, and temporal annotation for action detection and autonomous systems datasets.

Audio Annotation

Speech transcription, speaker diarisation, emotion labelling, sound event classification, and acoustic scene tagging for ASR, NLU, and audio AI model training.

Text Annotation

NLP dataset creation including intent classification, named entity recognition (NER), sentiment annotation, coreference resolution, and relation extraction labelling.

3D Point Cloud Annotation

LiDAR and depth sensor data labelling for autonomous vehicle perception, robotics, and 3D scene understanding — including cuboid fitting and ground plane labelling.

RLHF & AI Feedback

Human preference ranking and feedback collection for reinforcement learning from human feedback (RLHF) — aligning generative AI models with human values and intent.

Our Data Annotation Quality Process

Annotation Guideline Design

We develop detailed labelling specifications, edge case guidelines, and calibration datasets to ensure every annotator produces consistent, accurate labels.

AI-Assisted Annotation

We use semi-automated pre-labelling and active learning to accelerate throughput — reducing annotation time while maintaining label quality through human review.

Multi-Layer Quality Assurance

Every annotation passes through inter-annotator agreement checks, expert review, and automated validation to achieve 95%+ label accuracy guarantees.

Secure Delivery & Integration

Annotated datasets are delivered in your preferred format (COCO, Pascal VOC, YOLO, CSV) with full data provenance and secure handling of sensitive content.

WHY GEMPERTS

Why Choose Our Data Annotation Services

Precision Annotation

High-quality labelled data that powers production AI