Trusted Data Service Provider

Pixel-precision Image Annotation Service For AI & Machine Learning

Our dedicated annotators at Kotwel have much experience working with a wide range of annotation methods and types. We sure can help you annotate images and videos accurately at a reasonable price.

Skillful and well-trained annotators

Strict quality control procedure

Data privacy and security assurance

Image Annotation Services at Kotwel

Image Annotation With Bounding Box Kotwel

2D Bounding Box

3D Bounding Box Cuboid Annotation Kotwel

3D Bounding Box Annotation

Image Classification Annotation Kotwel

Image Classificiation

Semantic Segmentation Annotation Kotwel

Semantic Segmentation

Polygon Annotation Kotwel

Polygon Annotation

Lines and splines annotation Kotwel

Lines and Splines Annotation

Aim To Innovate


Trusted Image Annotation Provider FOR YOUR AI BREAKTHROUGHS

Find out how we can help accelerate your AI projects

Quality is our top priority

Excellence remains the prime focus of our dedicated team. We follow a strict quality process to ensure no compromise with quality at any level.

We offer image annotation services with a stellar workforce and well-equipped infrastructure to implement a large scale image annotation project in a limited timeframe.

Quality Assurance

QC team to ensure the quality

Full Support

Quick response and regular updates


Scalable workforce on demand

Competent Annotators

Kotwel's annotation team is well-trained so that they are able to work perfectly with a wide range of annotation methods and types.

Our annotators are so well-treated that they are willing to go the extra mile to deliver the best quality of annotation.

Image Annotation Service Kotwel

Never get late salary payment, they even pay me earlier than expected. My teammates are friendly, helpful and fun as hell. I feel so lucky to work for such a wonderful company!

Pham Long
Data Annotator at Kotwel

Probably one of the best companies to work for. I feel that my voice is heard and my input is taken into consideration. The senior team is always approachable which is a huge plus as well.

Thai Huong
Data Annotator at Kotwel

Transparent and conscientious company. Treats employees as assets. They truly care about their people.

Hoang Bach
Data Annotator at Kotwel

Kotwel's Workflow

1. Project set-up

Our team will work with you to establish priorities and define deliverables. They'll work to develop a custom solution based on your project objectives and timeline.

2. Production

We start the project and keep you updated regularly on the progress. Our dedicated manager will be in contact to answer all your questions and assist you until the process is completed.

3. Delivery

Our project management team checks, packages and formats the deliverables before being sent to you for final approval.

4. Post-completion customer service

Our company want to ensure your satisfaction with our delivery. We are willing to continue support you even after the project is completed.

Our Clients Trust Us

Client Testimonials

How clients talk about their experience with Kotwel


Anthony J.

Publishing Firm

Top in every way, responsiveness, customer relationship and translation. I definitely contact Kotwel again for upcoming projects.


Chris H.

Technology Firm

If I could describe Kotwel services in only three words, they would be: excellent, speedy & productive.

Ye-jun K.

Ye-jun K.

Healthcare Firm

Kotwel really adapted to our needs. They understood what we were looking for, and offered us unique and appropriate solutions.

Hoang T.

Hoang T.

Manpower Firm

Our company used Kotwel’s data entry service and some other works. They delivered high-quality results, very satisfying. The project coordinator was very enthusiastic, helpful and professional. 5 stars for fantastic service.

Image Annotation Case Study


Our client aimed to build their video analysis models, helping them to study athlete performance and safeguard against injury by interpreting human body positions.

Our annotators completed 51,000 keypoints within 2 weeks.

Client's accuracy expectation: >90%. We delivered >98%.

Positive feedbacks from the client: Fast turnaround, accuracy beyond expectation and full support.

Drive your projects forward faster with less efforts?