✦ Data Annotation
High-Quality Training Data for the Next Generation of AI
Image, video, text, audio, 3D point cloud and LLM annotation — delivered by trained, vertical-specialist teams with 98%+ labeling accuracy at any scale.
- 98%+ Labeling Accuracy
- 1M+ Annotations Delivered
- 200+ Trained Annotators
- 10+ Leading Tooling Platforms
Annotation services
Every modality. Every label type. Every scale.
Whether you’re training a perception model, fine-tuning an LLM, or building a multi-modal foundation model — we’ve labeled the data.
Image Annotation
Bounding boxes, polygons, semantic segmentation, keypoints & landmarks for computer vision models.
- Bounding boxes
- Polygon segmentation
- Semantic / instance masks
- Keypoint & landmark
Video Annotation
Frame-by-frame object tracking, action recognition, event tagging across long-duration video.
- Object tracking
- Action recognition
- Event tagging
- Temporal segmentation
Text & NLP
Named entity recognition, sentiment, intent classification, summarization & PII redaction.
- NER & POS tagging
- Sentiment & intent
- Text classification
- Summarization labels
Audio & Speech
Transcription, speaker diarization, phoneme labeling, intent & emotion tagging.
- Transcription
- Speaker diarization
- Emotion labeling
- Phonetic annotation
3D Point Cloud / LiDAR
Cuboid annotation, segmentation & tracking on LiDAR for autonomous driving and robotics.
- 3D cuboid
- Point cloud segmentation
- Sensor fusion
- Multi-frame tracking
LLM & GenAI Data
RLHF preference ranking, prompt-response evaluation, red-teaming & safety annotation.
- RLHF ranking
- Prompt evaluation
- Red-teaming
- Hallucination detection
Quality engineering
4-layer quality system, 98%+ accuracy guaranteed
Quality isn’t a stage — it’s engineered into every step. We track inter-annotator agreement, IoU and consensus metrics on every batch.
01
Annotator Layer
We audit your current catalog, identify gaps, errors, and opportunities for optimization across each channel.
02
Reviewer Layer
Templates, taxonomy, style guides and approval workflows are configured to match your brand standards.
03
QA Layer
Dedicated team handles data entry, copywriting, image editing & listing — all to spec, all on schedule.
04
Client Sign-Off
Three-stage QA: editor review, team-lead audit, then random sampling to ensure 99.8% accuracy.
Industry applications
Powering AI across high-impact verticals
Whether you’re training a perception model, fine-tuning an LLM, or building a multi-modal foundation model — we’ve labeled the data.
Autonomous Driving
Bounding boxes, polygons, semantic segmentation, keypoints & landmarks for computer vision models.
Medical Imaging
Radiology annotation, organ segmentation, lesion tagging — HIPAA-compliant workflows.
Retail & eCommerce
Visual search, attribute tagging, virtual try-on & shelf-monitoring datasets.
Robotics & Drones
Object detection, manipulation grasps, navigation & SLAM ground-truth datasets.
Security & Surveillance
Person detection, behavior analysis, weapon/violence detection annotation.
LLM Fine-Tuning
Instruction-tuning, RLHF, evaluation & multilingual conversational data.
Tooling agnostic
We work in your tool — or recommend the best fit
Our annotators are certified across 10+ leading platforms. Bring your own tool, or let us provision the right stack for your project requirements, format and budget.
Dedicated project teams 5–500 annotators per project, scalable on demand
CVAT
Label Studio
Labelbox
SuperAnnotate
Scale AI
V7 Darwin
Roboflow
Supervisely
Encord
Custom client tooling
Security & Compliance
Signed NDAs, secure VPN access, optional on-premises annotation, GDPR & HIPAA-aligned workflows.
Edge-Case Specialists
Trained reviewers for ambiguous cases — medical, legal, multilingual, safety-critical content.
Live Project Dashboards
Daily throughput, accuracy metrics, IAA scores and SLA tracking visible in real time.
CoreTech Data Solutions
End-to-end data solutions for sales, eCommerce, and AI — helping businesses scale with reliable, high-quality data.
QUICK LINKS
CONTACT US
US Headquarters
16192 Coastal Highway, Lewes, DE 19958
India
Vinir Tower, No 6, 100 Feet Road,
BTM 1st Stage, Bangalore, Karnataka
E-mail: info@coretechdata.com