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Knowledge

Discover the 10 best free image datasets to train your AI models [2024]

Written by
Daniella
Published on
2024-09-13
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min
πŸ“˜ CONTENTS
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In the field of artificial intelligence, model training relies heavily on the quality and diversity of available data. The datasets play a key role in the development of computer vision applications, from object recognition to semantic semantic segmentation.

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Access to complete, well-annotated datasets is essential to guarantee model performance and accuracy. This article explores a selection of free image datasets that should help you improve your projects while optimizing data annotation!

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What are the most popular free image datasets for Computer Vision?

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1 - COCO (Common Objects in Context)
This dataset is one of the most widely used datasets in the field of computer vision. It contains over 330,000 images, with more than 80 object categories, annotated for tasks such as object detectionsemantic segmentation and human pose analysis. COCO is renowned for the richness and diversity of the scenes present in its images, making it invaluable for training complex models.

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2 - ImageNet
Known as the originator of the famous ImageNet Large Scale Visual Recognition (ILSVRC) challenge, ImageNet offers a vast collection of images organized according to the WordNet hierarchy. With over 14 million images divided into more than 20,000 categories, it is an essential reference for image classification models. The size and diversity of the dataset make it a key tool for researchers.

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3 - Open Images Dataset
Developed by Google, Open Images contains around 9 million images annotated with bounding boxes and object labels. This dataset is widely used for object detection tasks, and offers detailed annotations including object relationships, semantic segmentation and object tracks.

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4 - Pascal VOC
Although older, the Pascal VOC dataset is still widely used in the computer vision community. It offers annotations for classification, object detection and semantic segmentation, making it ideal for testing and comparing models against recognized benchmarks. Pascal VOC contains 20 categories of common objects in various scenes.

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5 - LFW (Labeled Faces in the Wild)
This dataset is dedicated to facial recognition. It contains over 13,000 images of faces, with around 1,680 people represented at least twice. LFW is mainly used to evaluate the performance of facial recognition models, particularly in uncontrolled environments.

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6 - Cityscapes
Cityscapes is a dataset of 5,000 high-resolution images, captured in European urban environments. It is mainly used for semantic segmentation, with pixel-by-pixel annotations for objects such as cars and pedestrians. This dataset is widely used in the development of perception systems for autonomous vehicles.

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7 - KITTI
KITTI is designed for autonomous vehicles. It provides annotated images for object detection, segmentation and pose estimation. Captured in urban environments with on-board sensors, this data is used to develop vision models for autonomous driving.

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8 - CelebA
The CelebA dataset includes over 200,000 celebrity images annotated with 40 facial attributes. It is used for face recognition and generation. Its wide range of annotations makes it a key resource for projects focusing on facial features.

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9 - Fashion-MNIST
Fashion-MNIST contains 70,000 grayscale images of clothing and accessories. Designed as an alternative to MNIST, it is used for image classification tasks in the fashion industry, with a higher level of complexity.

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10 - Caltech-256
Caltech-256 offers over 30,000 images divided into 256 object categories. This dataset is popular for object classification tasks, offering great variability in the angles and sizes of the objects represented.

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πŸ’‘ These datasets cover several key areas of Computer Vision, making them essential resources for AI model research and development.

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How do these free image datasets improve the training of Machine Learning models?

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Free image datasets play a fundamental role in the training of Machine Learning modelsmodels, particularly for Computer VIsion applications. By providing a wide variety of annotated images, these datasets enable models to learn to recognize objects, shapes or faces in a variety of contexts.

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This encourages the improvement of classification, object detection and segmentation algorithms. In addition, free access to these resources facilitates research and innovation, enabling developers to test and refine their models at low cost, while contributing to the scientific community.

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What tools facilitate the annotation and integration of image datasets?

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Here are a few tools that facilitate the annotation and integration of image datasets in Machine Learning projects:

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Labelbox: a complete platform for image annotation

Labelbox is a collaborative platform dedicated to image annotation. It offers manual or semi-automated annotation tools for tasks such as object detection, image segmentation and classification. Thanks to its intuitive interface and project management features, Labelbox enables teams to easily coordinate annotation and track the progress of tasks.

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VGG Image Annotator (VIA): An open source annotation tool

VGG Image Annotator (VIA) is a lightweight, open-source tool for annotating images directly in a browser. It supports tasks such as annotating rectangles, polygons and key points. Annotations are saved locally, making it easy to integrate into training pipelines without having to manage external platforms.

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Supervisely: A suite of tools for advanced annotation

Supervisely offers a complete environment for annotating, managing and visualizing image data. The tool supports semantic segmentation, object annotation and human pose detection. It also features automatic annotation algorithms that reduce the time needed to annotate large quantities of data.

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CVAT (Computer Vision Annotation Tool): A powerful tool for computer vision

CVAT is an open source platform for image and video annotation. Used by many companies for training computer vision models, CVAT supports a variety of annotation tasks, such as object detection, segmentation and pose estimation. Its flexibility makes it a popular choice for projects requiring large quantities of annotations.

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Roboflow: Simplified dataset integration and preparation

Roboflow is an online tool that not only annotates images, but also manages and prepares datasets for Machine Learning models. It offers data augmentation, format conversion and dataset versioning capabilities, making it easy to integrate and enhance the data used to train AI models.

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These tools simplify the process of annotating and integrating image datasets, making Machine Learning model training more accessible, while increasing annotation efficiency and accuracy.

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What are the best addresses for free image datasets?

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Several online pages offer easy access to free image datasets for Machine Learning and Computer Vision projects.

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Kaggle: a community rich in free image datasets

Kaggle is a leading platform for data scientists and Machine Learning researchers. In addition to data science competitions, Kaggle offers a vast collection of free datasets, including many image sets. Users can explore and download these datasets for a variety of projects, from image classification to object detection. Community forums and discussions also provide valuable support for using the data.

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Papers with Code: When research meets datasets

Papers with Code is a platform that associates scientific papers with relevant codes and datasets. Users can browse hundreds of image datasets organized by task (classification, segmentation, detection, etc.). This platform is particularly useful for researchers looking to reproduce research results or find complementary resources for their projects.

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Google Dataset Search: A search engine dedicated to datasets

Google Dataset Search is a specialized search engine that enables users to quickly find free image datasets. By entering specific keywords, users can access a multitude of datasets hosted on different platforms. This page is particularly useful for those requiring datasets in specific or uncommon fields.

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Open Images: One of the world's largest datasets of annotated images

Developed by Google, Open Images is one of the largest free image datasets, with around 9 million annotated images. It is particularly suited to computer vision projects, especially for object detection and segmentation. The Open Images page offers easy access to download data, as well as detailed documentation to facilitate use.

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ImageNet: The reference for image classification

ImageNet is a must-have page for Machine Learning researchers, famous for having launched the famous ILSVRC challenge. This dataset contains millions of images organized into categories based on the WordNet hierarchy. It is used for image classification tasks and remains one of the most important benchmarks in this field.

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Conclusion

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In conclusion, free image datasets play an important role in the advancement of Machine Learning projects, helping to speed up AI developments. This is not to say that they are perfect, or cannot be improved. They do, however, provide a solid basis for students and AI enthusiasts to train their models.

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Whether in the context of classification, semantic segmentation or object detection, access to these resources means that models can be tested, trained and perfected without exhaustive costs... can't you find what you're looking for? Say no more, don't hesitate to contact us Contact us: we can assemble even the most complex datasets for you, at a competitive price!