Image Annotation

Train reliable computer vision and healthcare models with expert image annotation−from bounding boxes to pixel-perfect segmentation.

Looking for reliable high quality image annotation services? Aya Data delivers pixel-accurate image labeling for AI teams across the UK, US, Europe, the Middle East, and Africa. We provide bounding boxes, polygons, semantic segmentation, keypoints, and DICOM medical imaging with tiered quality assurance and high-quality datasets in your required format.

What is Image Annotation

Image annotation is the process of labeling objects, regions and attributes within images so machine learning models can learn to recognise them. Each annotation – a box around a vehicle, a polygon traced around a tumour, a mask covering every pixel of a road surface – becomes part of the quality of your model. The quality of that data sets a hard ceiling on model performance. A model cannot learn a distinction its training data never made correctly.

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WHY CHOOSE AYA DATA

Image Annotation Services

We deliver high-quality image annotation for bounding boxes, polygons, semantic segmentation, keypoints and DICOM medical imaging to improve the accuracy of computer vision and object detection models.Whether you need 10,000 images or several million, we scale delivery without loosening the review process that produced your pilot results.

1. Semantic Segmentation 2. Medical Image Annotation (DICOM) 3. 3D Cuboid Annotation 4. Polygon Annotation 5. Instance Segmentation 6. Keypoint & Landmark Annotation 6.Image Classification & Tagging
Semantic Segmentation

 Every pixel in the image assigned to a class. Used where the model must understand the whole scene rather than locate discrete objects−road surface versus pavement in autonomous driving, tissue types in medical imaging, land use in satellite imagery.

Aya Data's expert team accelerates and supports your ML journey by extracting real-time data from images and videos for your Semantic Segmentation projects.
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 Clinical annotation performed on native DICOM files without conversion, preserving the metadata that determines annotation accuracy −Hounsfield units, slice thickness, pixel spacing, patient orientation. Reviewed by credentialed clinical specialists with adjudication for ambiguous findings.

Aya Data's expert team accelerates and supports your ML journey by extracting real-time data from images and videos for your Medical Image Annotation (DICOM) projects.
3D Cuboid Annotation

3D Cuboid Annotation encapsulates objects in 3D space, providing position, orientation, and dimensions. Our team precisely places these boxes around objects, crucial for tasks like autonomous driving.

Aya Data's expert team accelerates and supports your ML journey by extracting real-time data from images and videos for your 3D Cuboid Annotation projects.
Polygon Annotation in healthcare

Polygon annotation Point-by-point contours traced around irregular objects. Where a bounding box around a crop leaf, a parked car at an angle or a piece of damaged infrastructure would include large amounts of background, polygon annotation captures only the object −producing cleaner training signals for detection and segmentation models.

Aya Data's expert team accelerates and supports your ML journey by extracting real-time data from images and videos for your 3D Polygon Annotation.
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Instance Segmentation

 Instance Segmentation Pixel-level masks that also distinguish individual objects of the same class. Necessary when counting matters −individual fruit on a plant, separate cells in a pathology slide, distinct vehicles in dense traffic.

Aya Data's expert team accelerates and supports your ML journey by extracting real-time data from images and videos for your 3D Instance Segmentation.
Keypoint & Landmark Annotation

Keypoint & Landmark Annotation Specific points marked on an object to capture pose, shape or orientation. Used for human pose estimation, facial landmark detection, animal behaviour analysis, and agricultural applications such as identifying stem and fruit attachment points for robotic harvesting.

Aya Data's expert team accelerates and supports your ML journey by extracting real-time data from images and videos for your Keypoint & Landmark Annotation.
Image Classification & Tagging

Image Classification & Tagging

Image Classification & Tagging Whole-image or multi-label classification −categorising images by content, quality, condition or attribute. Used in e-commerce catalogue structuring, content moderation and quality inspection. 

Aya Data's expert team accelerates and supports your ML journey by extracting real-time data from images and videos for your  Image Classification & Tagging.
Quality Assurance

How We Measure and Maintain Annotation Quality

Most providers quote a single accuracy figure. That number is almost never defined, and it hides the thing that actually determines whether your model works: whether different annotators labelled the same

Exceptional Communication
Automated Labeling
Domain Expertise
Data Compliance

Industries We Serve

We provide high-quality data annotation services across a range of industries and use cases.

Agriculture

We help farmers and agribusinesses harness AI to optimize crop yields, reduce waste, and make informed decisions.

Autonomous Vehicles

Evaluating autonomous vehicle AI for robustness against edge cases like e-Scooters or adverse weather.

Financial Services

Securing AI-driven fraud detection systems with comprehensive vulnerability assessments.
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Autonomous Vehicle
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Financial Services
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Healthcare
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Energy & Natural Resources
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Media & Entertainment
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Social & Public Sector
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Technology
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image annotation services,image labeling,Image labbeling
IMAGE ANNOTATION

Use Cases

Discover how AI-powered image annotation advances healthcare, autonomous driving, and robotics through highly accurate object detection, advanced spatial mapping, and enhanced medical insights for precise diagnostics.

image annotation services,image labeling,Image labbeling
image annotation services,image labeling,Image labbeling
Our Featured Projects

Selected Case Studies

We help businesses of all sizes effectively navigate their AI journey.

Testimonials

What Our Clients Say About Us

The Aya Advantage
1/ Exceptional Customer Experience
2/ Unwavering Quality
3/ Unparalleled Subject Matter Expertise

Exceptional Customer Experience

  • Tight communication feedback loop
  • Transparent pricing, no hidden fees
  • Domain-specific project management teams
  • Flexible engagement models
  • Ongoing support and consultation
  • Unwavering Quality

  • Custom quality control methodology
  • Innovative solutions for complex challenges
  • ISO 9001, HIPAA, GDPR, SOC2 compliant
  • Swift issue resolution processes
  • Scalable, reliable service delivery
  • Unparalleled Subject Matter Expertise

  • Large team of domain-specific data specialists
  • Experienced data scientists and engineers
  • Broad network of expert partners
  • Multilingual and multicultural competencies
  • Proven track record of success
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    To know more about us

    Frequently Asked Questions

    What are image annotation services?
    Image annotation services label objects, regions and attributes within images so machine learning models can be trained to better recognise them. A provider supplies trained annotators, annotation tooling, quality assurance and delivery in your required format. Aya Data delivers managed image annotation across bounding box, polygon, segmentation, keypoint and medical imaging techniques.
    How much do image annotation services cost?
    Cost depends on technique, image complexity, resolution and the expertise required. Simple bounding box work on clear imagery is the lowest cost per unit; clinician-reviewed medical segmentation is the highest. We price per object, per hour or per project, and start every engagement with a free pilot so you can assess quality before committing.
    Can I outsource image annotation?
    Yes−most computer vision teams do. Outsourcing gives you trained annotators, quality processes and elastic capacity without building an internal team. The main criteria when choosing a partner are who performs the annotation, how disagreement is resolved, and whether quality is measured or merely asserted.
    What is the difference between bounding box and polygon annotation?
    A bounding box is a rectangle drawn around an object; a polygon traces the object's actual contour. Bounding boxes are faster and sufficient when object shape does not affect the model's task. Polygons are necessary for irregular shapes, where a box would include substantial background and dilute the training signal.
    What is photogrammetry and LiDAR?
    Photogrammetry uses photographs to create 3D models. LiDAR uses laser light to create 3D maps. Combining these technologies produces highly detailed and accurate 3D geospatial data.
    What is the difference between semantic and instance segmentation?
    Semantic segmentation assigns every pixel to a class but does not distinguish individual objects of that class. Instance segmentation separates each object as well. If your model needs to count objects−individual fruit, separate cells, distinct vehicles−you need instance segmentation.
    Do you handle medical image annotation?
    Yes. We annotate natively in DICOM without conversion, which preserves the clinical metadata that determines annotation accuracy. Clinical work is performed and reviewed by credentialed specialists, with adjudication for ambiguous findings and documentation structured for regulatory pathways.
    Which image formats do you support?
    JPEG, PNG, TIFF, WebP, BMP, DICOM, NIfTI, GeoTIFF, multi-spectral and high-resolution gigapixel imagery. We deliver in COCO, Pascal VOC, YOLO, CSV, DICOM-SR, GeoJSON or your custom schema.
    How do you protect sensitive image data?
    We operate to ISO, HIPAA, GDPR and SOC 2 aligned standards, with secure infrastructure, role-based access controls, annotator confidentiality agreements and a published Data Security Plan. For regulated datasets we agree on data handling, residency and retention terms before any images are transferred.
    Can you annotate millions of images?
    Yes. We scale by adding calibrated annotators against an established guideline rather than by loosening review. Every new annotator is calibrated against our gold-standard set before joining production, which is what keeps accuracy stable between the pilot and full volume.
    Do you offer a free trial or pilot?
    Yes. We annotate a representative sample of your images at no cost so you can evaluate quality against your own standards. If you are comparing vendors, give each the same sample−it is the only reliable way to compare.
    image annotation services,image labeling,Image labbeling
    image annotation services,image labeling,Image labbeling

    Simplify Your AI Development Today!

    Do you need help with Data Acquisition, Data Annotation or building a custom AI model? Aya Data is ready to partner with you. Talk to us today!

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