Data Annotation Services

In today’s AI-first world, the difference between smart and subpar models comes down to one thing: quality data. At NextWealth, we transform raw information into machine-ready training data using a human-in-the-loop approach—delivering gold-standard annotation across image, video, text, audio, and 3D formats. From autonomous navigation to KYC automation, precision begins with our labels.

What is Data Annotation?

Data annotation, or data labeling, is the process of tagging raw data—like images, text, audio, or video—so machine learning models can understand it. This annotated data serves as the ‘ground truth’ for training AI systems to recognize objects, interpret language, or make decisions. Without accurate annotation, even the most powerful models fail to perform reliably.

Types of Data Annotations We Support

Image Annotation

Image annotation includes bounding boxes, polygons, segmentation, and keypoints to label objects, faces, and features within images. It’s critical for training AI in object detection, facial recognition, and visual understanding. These annotations help computer vision systems in autonomous vehicles, retail, healthcare, and robotics interpret real-world imagery accurately.
Image Annotation

Video Annotation

Video annotation involves frame-by-frame tracking and temporal labeling of people, objects, and actions. It enables behavior analysis for surveillance, autonomous driving, and sports analytics. Accurate annotations ensure that computer vision models understand motion, direction, and events over time—making video a valuable input source for real-time decision-making systems.
Video Annotation

Text Annotation

Text annotation includes named entity recognition (NER), sentiment tagging, and intent classification. It supports NLP applications like chatbots, document parsing, and fraud detection. Annotated text helps language models extract meaning, understand user context, and respond accurately, enabling smarter automation in customer support, finance, and regulatory compliance systems.
Text Annotation

Audio Annotation

Audio annotation tags spoken language with speaker identification, transcription, and intonation marking. It helps train voice assistants, call center AI, and language recognition tools. Annotators distinguish between speakers, mark pitch or emotion changes, and convert audio to text—enhancing performance in multilingual, real-time, or emotionally sensitive voice applications.
Audio Annotation

3D / LiDAR Annotation

3D or LiDAR annotation applies cuboids, semantic segmentation, and depth mapping to point cloud data. It is essential for autonomous vehicles, robotics, and HD mapping. Annotators label objects in three-dimensional space to help AI understand object size, distance, and position—crucial for safe, spatially aware navigation.
3D / LiDAR Annotation

Synthetic Data QA

Synthetic data QA ensures that artificially generated data meets quality and realism standards. Human annotators validate edge cases, simulation scenarios, and synthetic annotations for consistency, diversity, and context. This process improves model robustness by exposing it to rare or complex events, making it ready for real-world deployment.
Synthetic Data QA

Applications of Data Annotation Services

Our data annotation services support real-world AI use cases across diverse sectors:

Autonomous Vehicles

Data annotation enables autonomous vehicles to detect objects, pedestrians, traffic signals, and lane boundaries through annotated images, LiDAR point clouds, and in-cabin footage. It supports ADAS features like emergency braking, gesture recognition, and driver monitoring, ensuring safer navigation by training vision systems to interpret complex road environments in real time.

eCommerce & Retail

In eCommerce, annotation powers visual search, recommendation engines, and automated product tagging. Annotated product images help classify items by type, color, texture, and style. This enhances search accuracy, enriches catalogs, and drives better product discovery, enabling customers to find what they need faster in online marketplaces.

Healthcare & Life Sciences

Data annotation supports AI-driven medical diagnostics by labeling X-rays, MRIs, CT scans, and pathology slides. Annotators identify regions of interest like tumors or fractures, enabling precise model training. This assists doctors with early detection, speeds up diagnosis, and enhances the accuracy of computer-aided medical systems and research platforms.

Trust & Safety

Annotation in trust & safety helps AI systems identify policy violations in user-generated content. Use cases include facial recognition, KYC verification, liveness checks, and detecting offensive or fraudulent material. Annotated datasets train models to flag risky behavior, ensuring platforms stay secure, compliant, and user-friendly at scale.

Industrial & Manufacturing

Annotation enables defect detection and visual inspection by labeling surface anomalies, component placement, or process errors in industrial imagery. In manufacturing, annotated datasets power quality control systems and robotics. This reduces downtime, ensures consistency, and supports predictive maintenance through better visual understanding of production environments.

Media, Security & Surveillance

Video annotation helps track individuals, identify unusual behaviors, and recognize objects in security footage. It trains AI to detect intrusions, monitor crowds, and assess risk in real time. Annotated data fuels surveillance systems, smart city infrastructure, and content moderation tools for secure and context-aware media applications..

NextWealth’s Approach to provide High-Quality Data Annotation

Why Choose NextWealth?

✅Expertise across CV, NLP, and LiDAR domains
✅ISO-certified data security and process control
✅Tool-agnostic flexibility: CVAT, V7, Taskmonk, and more
✅5,000+ trained annotators from Tier-2/3 cities
✅Delivery centers across India for scale and cost-efficiency

Successful client stories and case studies

Deep dive into our journey of partnering with the global business giants.

Computer Vision

Computer Vision

project to identify phishing threats

1 min read

Learn More
Computer Vision

Facial Annotation

features using object detection and classification

1 min read

Learn More
Computer Vision

Training Datasets

for machine learning algorithms

1 min read

Learn More

Why partner with us

Our services are tailored to elevate the efficiency of your AI/ML processes
Managed Services l Captive Services l Staffing Services

5,000+

Skilled
Employees

1B+

Data
Transactions

40+

Live Projects

10+

Fortune 500
Clients

73

NPS Score

Testified and trusted by
the best in the world of business

I am really happy at all the great things we have been able to achieve in the past 1 year. The relationship now has a solid foundation, and I am sure NextWealth will continue to be a formidable partner going ahead, bringing a delightful experience for our customers.

Sr. Program Manager Fortune 10 Technology Company

NextWealth has been an invaluable partner to us, significantly accelerating our growth by handling critical data operations and providing strategic insights.

Founder India’s Largest Market and Competitor Intelligence Company

NextWealth’s hard work and dedication are truly making a difference, streamlining our processes significantly. We really appreciate it!

Principal AI & Machine Learning Scientist Global Leader in Threat Detection and Security Screening

My experience with NextWealth has been wonderful. The diligent team consistently delivers on time with a focus on quality. Their innovation-driven mindset fosters a win-win situation for both teams.

eCommerce Strategy Manager Europe’s Leading Fashion and Lifestyle Platform

I am happy with the improvement in the performance. I have seen positive improvement, and we have a long way to go.

Staff Technical Operations Manager Fortune 10 American Retail MNC

NextWealth’s in-depth analysis helped us pinpoint exactly what needs to be done to address the issues.

Specialist Quality Services, Fortune 10 Technology Company

With excellence in Quality, Cost, and TAT—key pillars of any operation—NextWealth sets a benchmark for operational efficiency and beyond.

Associate Director Indian Equity Research Company

We have experienced significant growth—a success we could not have achieved without the expert support, hard work, and commitment of NextWealth.

CEO Leading Marketing Agency

Explore Resources

Know how we are accelerating business growth by enabling effectiveness in AI/ML

FAQs

Lorem ipsum dolor sit amet consectetur. Nunc pretium et magna leo pellentesque duis.

Lorem ipsum dolor sit amet consectetur. Netus nullam non consequat sit aliquet ullamcorper cursus. Diam egestas eu malesuada imperdiet urna felis morbi dis aliquam. Pharetra amet libero nisi risus arcu blandit a morbi morbi. Lacus nec in venenatis risus. Quam amet faucibus scelerisque eleifend. Pellentesque ornare ultrices aliquet enim urna. Mi consectetur ut maecenas nunc luctus egestas feugiat.

Pellentesque felis tempor volutpat leo luctus egestas ornare. Vulputate bibendum dui vulputate non massa. Quis enim neque arcu eu ac risus est sed.

Lorem ipsum dolor sit amet consectetur. Lacus.

Lorem ipsum dolor sit amet consectetur. Netus nullam non consequat sit aliquet ullamcorper cursus. Diam egestas eu malesuada imperdiet urna felis morbi dis aliquam. Pharetra amet libero nisi risus arcu blandit a morbi morbi. Lacus nec in venenatis risus. Quam amet faucibus scelerisque eleifend. Pellentesque ornare ultrices aliquet enim urna. Mi consectetur ut maecenas nunc luctus egestas feugiat.

Pellentesque felis tempor volutpat leo luctus egestas ornare. Vulputate bibendum dui vulputate non massa. Quis enim neque arcu eu ac risus est sed.

Lorem ipsum dolor sit amet consectetur. Sem purus eget pretium at amet ultrices tempor. Lectus viverra lacinia tristique est id varius est. Risus in duis a congue odio.

Lorem ipsum dolor sit amet consectetur. Netus nullam non consequat sit aliquet ullamcorper cursus. Diam egestas eu malesuada imperdiet urna felis morbi dis aliquam. Pharetra amet libero nisi risus arcu blandit a morbi morbi. Lacus nec in venenatis risus. Quam amet faucibus scelerisque eleifend. Pellentesque ornare ultrices aliquet enim urna. Mi consectetur ut maecenas nunc luctus egestas feugiat.

Pellentesque felis tempor volutpat leo luctus egestas ornare. Vulputate bibendum dui vulputate non massa. Quis enim neque arcu eu ac risus est sed.

Lorem ipsum dolor sit amet consectetur. Neque lorem et enim tempus. Vitae.

Lorem ipsum dolor sit amet consectetur. Netus nullam non consequat sit aliquet ullamcorper cursus. Diam egestas eu malesuada imperdiet urna felis morbi dis aliquam. Pharetra amet libero nisi risus arcu blandit a morbi morbi. Lacus nec in venenatis risus. Quam amet faucibus scelerisque eleifend. Pellentesque ornare ultrices aliquet enim urna. Mi consectetur ut maecenas nunc luctus egestas feugiat.

Pellentesque felis tempor volutpat leo luctus egestas ornare. Vulputate bibendum dui vulputate non massa. Quis enim neque arcu eu ac risus est sed.