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Image annotation

Train your computer vision models with our 100% customizable image annotation tool. A unique annotation service that combines custom image labeling tools, a dedicated project manager and a trained workforce for each of your annotation needs.

Yes. We know how to annotate images. 
Every type of images.


This type of annotation is the simplest and the most cost-effective but it often generates a lot of noise, making therefore the learning more difficult. With our oriented 2D Bounding Box solution, we can reduce the noise by up to 80%.

  • Classic or oriented 2D Bounding Box

  • Hierarchization of labels

  • Output format customization

  • UI customization

  • Annotation outside the image


Get additional data to the 2D annotation such as width, height and depth to train your algorithm.

  • Automatic 3D Bounding box

  • Label hierarchy

  • Visualization of a treasury

  • Output format customization

  • UI customization

  • Annotation outside the image


Annotate your objects by delimiting their contours to remove any possible noise and thus facilitate the learning of your model. Our Polygon annotation tool offers a wide range of features to meet all your needs:

  • Annotation by instance

  • Infinite number of segments

  • Point orderings

  • Output format customization


Easily generate pixel-perfect masks from your annotated images to train your computer vision model. Segmentation is a precision job; that's why we focused on the fluidity and technicality of our tool.

  • Zoom up to x42

  • Automatic removal of unlinked segmentations

  • Management of occlusions and overlays

  • Automatic edge detection

  • Color customization

woman's face annotated by the "order of points" technology - computer vision


Train your facial recognition models to detect emotions and expressions with ease with our customizable point annotation tool.This annotation technique requires a methodical and chronological work where rigor is essential; that's why we have developed a specific interface.

  • Odonnation of points

  • Annotation of extreme points

  • Annotation outside the image

  • Customization of the UI

  • Customization of the output format


Train your human, animal or any other ordered structure skeleton recognition models with our customizable point annotation tool.
This annotation technique requires methodical and chronological work where rigor is paramount which is why we have developed a specific interface:

  • Forced scheduling to limit errors

  • Annotation of the extreme points

  • Annotation outside the image

  • Customization of the UI

  • Customization of the output format


Train your computer vision model to recognize and delineate lanes, streets, sidewalks, parking spaces ... thanks to our Polyline annotation tool developed specifically for autonomous vehicles.
The Polyline is a technical annotation because the variables are numerous. This is why isahit has developed an intuitive interface to easily manage a large number of annotations:

  • Polyline by Instance

  • Overlay of annotations

  • Hierarchy of labels

  • Visualization of a thesaurus

  • Customization of the output format

  • UI customization


Improve the performance of your model with our 'Human in Loop' transcription solution. We correct in real time the predictions of your algorithms and thanks to our diverse community of contributors (+39 countries and 20 languages) and intervene on international issues.

  • Customized API

  • Diverse workforce trained in these subjects

  • Response time under 30 seconds

  • Customization of the transcription tool

  • Transcription system using Dialogue and Timestamp


Get the most out of your classification project, which usually seems so easy but can quickly become complex as the list of classes grows.
Our classification tool makes complex projects manageable because we reduce subjectivity with an intuitive classification interface.

  • Dynamic label list

  • Classification system with scale

  • Hierarchization of labels

  • Visualization of a thesaurus

  • Customization of the UI


Lidar 3D point Cloud Annotation is one of the most difficult annotation and required a robust & fast annotation tool but also a workforce trained specifically to your use-case and supervised by a dedicated and experienced project manager. We developed our solution based on our client's feedback to match all their needs.

  • Dynamic label list

  • Smooth navigation

  • Customised label display

  • Visualization of a thesaurus

Some of the images we annotated

A Powerful Workflow
To reach the best quality on every kind of projects. 

A committed, diverse and skilled WORKFORCE

We recruit a workforce adapted to your needs (language, timezone, academic skills) that we train and manage throughout your projects.

Best annotation tools for all your needs

We offer 100% configurable anotation tools (APIs) according to your needs (computer vision, NLP…)

A continuous OPS monitoring

We have a solid workforce management platform (assignment, training, tracking, payment, analytics) and a CSM team dedicated to your projects.

Security and quality ensured (NPS)

We guarantee security of your datas and the best quality for your annotation thanks to an integrated and intelligent quality control system.

Why choosing isahit?
Opt for an on demand and qualified workforce to obtain the best data. And generate a true social impact.

THE Only

We place impact at the heart of our business model and measure it every year, making us the first B Corp certified AI company in Europe.


Our workforce is multicultural, coming from 44 different countries, speaking more than 16 languages, with different academic backgrounds and professional experiences.


We assign our workforce to projects based on their skills and then provide them with a complete onboarding (more than 3 hours of training per project) & ongoing coaching.


We understand our customer's needs for flexibility and offer them appropriate solutions: scalable workforce, tools for every labelling needs, pay as you go system.

Our Customers
We helped them reaching stars

USE CASE : L'Oréal

Discover how L'Oréal uses our image annotation service to train their facial recognition algorithm and capitalise on the diversity of our workforce to avoid including biases in their models.
  • Use of a consensus process

  • Assigning images according to the skin type : (Indian, Asian, African, American, Caucasian)

  • Order of points

USE CASE : Airbus

Find out how Airbus uses our image annotation service to train its recognition algorithms on satellite imagery and capitalises on the flexibility of our service for mass annotations on an ad hoc basis.
  • Process of managing fluctuating image flows

  • Optimisation of the tool to handle several hundred annotations per image

  • Use of the directional bounding box with directional vector

USE CASE : Sodexo

Come and see how Sodexo uses our image annotation service to train their Food Recognition algorithm and capitalise on the diversity of our workforce to avoid bias in their models.
  • A tailor-made annotation pipeline

  • A tailor-made API

  • Specific interface for label management