Data Annotation Services

Professional labeling and validation across computer vision, NLP, audio, and document AI. AI-assisted workflows with human-in-the-loop quality assurance at every stage.

Computer Vision

Precise annotation for image and video datasets powering object detection, segmentation, tracking, and spatial understanding models.

  • 2D Bounding Boxes
  • 3D Cuboid Annotation
  • Polygon & Polyline Annotation
  • Semantic Segmentation
  • Instance Segmentation
  • Keypoint & Skeleton Annotation
  • Object Tracking (Video)
  • LiDAR / Point Cloud Labeling
  • Lane & Road Marking
  • Data Collection & Sourcing

Natural Language Processing

Structured text labeling for training and evaluating language models across classification, extraction, and comprehension tasks.

  • Named Entity Recognition (NER)
  • Text Classification
  • Sentiment Analysis
  • Intent & Slot Labeling
  • Relation Extraction
  • Coreference Resolution
  • Document Summarization QA

Audio & Speech

Annotation services for speech recognition, speaker identification, and audio understanding systems.

  • Audio Transcription
  • Speaker Diarization
  • Timestamping & Segmentation
  • Phonetic Labeling
  • Emotion / Tone Detection
  • Wake Word Annotation

Document AI

Labeling for document understanding pipelines — from scanned forms to complex multi-page layouts.

  • OCR Correction & Validation
  • Form Field Extraction
  • Table & Layout Parsing
  • Document Classification
  • Invoice / Receipt Labeling
  • Handwriting Recognition Support

AI-Assisted Annotation

We integrate machine learning pre-labeling into our pipelines to accelerate throughput without sacrificing quality. Every AI-generated annotation is reviewed, corrected, and validated by trained human annotators before delivery.

  • ML pre-labeling reduces turnaround time
  • Human review catches edge cases and model drift
  • Compatible with client-provided models
  • Works with our own pre-annotation tooling

Multilingual Annotation

Native-language annotation teams for bilingual and cross-lingual projects.

  • English Annotation & QA
  • Chinese (Mandarin) Annotation & QA
  • Bilingual Labeling Workflows
  • CJK Text Processing & NER
  • Cross-Lingual Quality Validation

Platform & Tooling

We integrate into your existing annotation infrastructure or deliver in standard formats.

  • CVAT
  • Labelbox
  • Label Studio
  • Supervisely
  • Custom / Proprietary Platforms
  • API-Based Delivery (JSON, COCO, Pascal VOC, YOLO)