6 Steps to Building Training Datasets for Computer Vision Models (2023)

Computer vision (CV) technology is advancing rapidly, with revolutionary applications in the following sectors:

  • Healthcare
  • Retail
  • Automotive
  • Manufacturing
  • Agriculture

As the demand for computer vision-enabled systems grows, so does the demand for well-trained computer vision models. To produce high-quality results, these models require large amounts of training data, which must be of high quality and must be accurately labeled. However, collecting such datasets can be challenging due to the costs involved in the collection process and the time it consumes.

This article explores the 6 essential steps for collecting and building training datasets specifically for computer vision models to help developers and business leaders to train and implement robust computer vision models in their businesses.

1. Understanding your data requirements

It’s crucial to know the kind of data your particular computer vision model requires before you start gathering it. Some factors to consider include:

The type of computer vision model you’re developing

The type of computer vision model can vary from project to project. You can choose from the following:

  • Image segmentation: This type of system involves breaking down an image into its main components, such as shapes and objects. Image segmentation systems are useful for tasks such as classifying different objects in an image or finding features within the image.
  • Image classification: Image classification is designed to take an image or set of images and classify them into a predetermined set of categories.
  • Object detection: This computer vision system is designed to detect objects in an image. It can be used to identify faces, cars, or other items of interest.
  • Facial recognition: A facial recognition system is developed to recognize and identify faces from images. It is commonly used in security systems, as it can be used to detect intruders or unauthorized individuals accessing a facility.
  • Edge detection: Edge detection computer vision systems are used to identify the boundaries of objects in an image. This type of system is useful for tasks such as identifying roads, sidewalks, or other features in an image.
  • Pattern detection: These types of systems are designed to identify patterns or specific features in an image. These systems are commonly used for tasks such as recognizing text in an image or detecting a specific color.

The kind of training images or videos you’ll use

This involves the type of visual data that will be used. For instance, a quality inspection system for car parts can not be trained with image datasets of food. Data types can be:

  • Images of faces for a facial recognition system
  • Images of roads/streets for a self-driving system
  • Videos of people walking on a street for a surveillance system, etc.

The kind of object (or objects) you’re aiming for your model to detect

You need to consider what kind of objects your computer vision system needs to detect. If a system needs to detect pedestrians, then it will require image or video datasets of people walking on sidewalks or while crossing the road.

The environment in which your model will be operated

This is taken into account to ensure that the system will work well in real-world circumstances. This is due to the fact that environmental factors like lighting, background clutter, and object occlusion can significantly affect how well a computer vision system performs.

The system can be trained to recognize objects and features under comparable circumstances and more effectively deal with difficulties like changes in lighting and background clutter. This is done by collecting training data that properly simulate the environment in which the system will be used.

2. Selecting the right data collection method

For a computer vision system, the method used to collect the data is crucial because it has a direct impact on the quantity, quality, and variability of the whole dataset. Making sure that the computer vision system can learn from a variety of representative data is essential for producing accurate predictions and results. You can choose from the following methods:

(Video) How To Prepare Datasets For Training YOLOv5 Object Detection- Official - YOLOV5 Training

6 Steps to Building Training Datasets for Computer Vision Models (2)
  1. Custom crowdsourcing: Crowdsourcing is an effective method for collecting large and diverse image or video datasets in a limited period of time.
  2. Private collection: In-house data collection, which is relatively expensive but offers highly personalized datasets.
  3. Precleaned and prepackaged data: Readily available datasets which are much cheaper than other methods but offer a limited level of quality.
  4. Automated data collection: The quickest method of collecting large-scale secondary online images and videos to create training datasets.

3. Preparing high-quality data

One of the most important steps in building training data for computer vision models is collecting high-quality data. This includes ensuring that the images and videos you collect are:


To increase the robustness of the model to variations in the real-world environment, make sure the data collection contains a diverse range of objects, positions, lighting settings, and backgrounds.


Diverse computer vision training datasets can be costly and take a long time to gather. Clickworker offers image and video datasets to train computer vision models through a crowdsourcing platform. Their global team of over 4.5 million workers offers scalable and diverse data collection and image annotation services.

Annotation quality

To clearly and precisely recognize the location and class of objects in the photos or videos, the data should be annotated with accurate labels, bounding boxes, or masks.


The data gathered should accurately represent the environment in which the system will function, with a focus on the specific objects and features that are relevant to the project.


Make sure that the dataset is balanced, with a similar number of images or videos for each class of object, to avoid biases in the model towards certain classes.

Quality of images/videos

The images and videos should have good resolution and be free from distortions such as blur, noise, and compression that could negatively impact the performance of the model. You need to also make sure that the images are authentic and not altered through digital software such as photoshop.

To learn more about how to ensure quality while collecting training data, check out this article.

4. Labeling your data

6 Steps to Building Training Datasets for Computer Vision Models (3)

Data annotation or labeling provides the computer vision system with labeled and readable examples to learn from, allowing it to accurately predict new, unseen data. You can consider the following factors:

(Video) Build high-quality machine learning datasets & computer vision models with open source FiftyOne

Annotation guidelines

Create precise and concise annotation guidelines that outline the data to be labeled, how to label it, and examples to aid annotators in understanding the optimal results. Additionally, make sure the object classes and attributes that need to be annotated are clearly defined and that all of the annotators are on the same page.

Annotator quality

Choose annotators who have experience in the relevant fields/domains, and keep an eye on performance. For instance, not anyone can perform medical image annotation, they require a specific level of experience.

Annotation tools

Select tools that are compatible with the desired annotation format and facilitate efficient annotation. Leverage automated data labeling if necessary.

Quality control

Implement routine quality checks to keep an eye on annotator performance, ensure consistent annotations of each data point, and spot and correct errors.

Leverage the human-in-the-loop approach: Use a combination of human annotators and automated tools to get the best results.

You can check out the following articles to learn more data annotation for specific data types:

  • Quick Guide to Video Annotation Tools and Types
  • Video Annotation: In-depth guide and Use Cases

5. Augmenting your data

Data augmentation is the process of creating new training data by manipulating existing image data. This can include techniques such as:

  • Rotating, flipping, and cropping images
  • Adding noise or blur to images
  • Using color or brightness adjustments

The goal is to artificially increase the size of the training dataset and reduce overfitting, which occurs when a model is too closely fit to the training data, leading to poor generalization to new data.

Here is an example:

6 Steps to Building Training Datasets for Computer Vision Models (4)

6. Validating and testing

To make sure your data will be useful for training your computer vision model, validate and test it after you’ve collected and labeled it. This can be done through techniques such as:

(Video) Build high-quality ML datasets and computer vision models with the FiftyOne open source toolset

  • Split your data into training and validation sets
  • Use cross-validation to ensure your data is representative
  • Test your computer vision model on real-world data to ensure it generalizes well

This is done to ensure the model is correctly learning and to avoid AI overfitting. The performance of the model is measured on a different, unknown data set during training. Validation and testing both contribute to ensuring the model’s quality and its capacity to generalize to new data.

To learn more about training data collection for any AI/ML solution, download our free whitepaper:

Get Data Collection Whitepaper

Further reading

  • Top 4 Facial Recognition Data Collection Methods

If you need help finding a vendor or have any questions, feel free to contact us:

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6 Steps to Building Training Datasets for Computer Vision Models (5)

Shehmir Javaid

Shehmir Javaid is an industry analyst at AIMultiple. He has a background in logistics and supply chain management research and loves learning about innovative technology and sustainability. He completed his MSc in logistics and operations management from Cardiff University UK and Bachelor's in international business administration From Cardiff Metropolitan University UK.

(Video) Quickly create your own image datasets for Computer Vision training with a custom GCP search engine


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    How do I create a computer vision dataset? ›

    You Have to Build Your Own Dataset
    1. Define your set of classes.
    2. Scrape and collect images for each class from Flickr.
    3. Rename the files.
    4. Organize the folder structure.
    5. Upload the data to makesense.ai for the annotation (objection detection or segmentation).

    What model is used for computer vision? ›

    Convolutional Neural Networks: The Foundation of Modern Computer Vision. Modern computer vision algorithms are based on convolutional neural networks (CNNs), which provide a dramatic improvement in performance compared to traditional image processing algorithms.

    How many steps are there in the working principle for machine vision? ›

    The working principle of machine vision consists of three different steps : capture, process and action.

    How do you create a dataset? ›

    You can create datasets in the following ways: Using the Google Cloud console. Using a SQL query. Using the bq mk command in the bq command-line tool.
    Create datasets
    1. Open the BigQuery page in the Google Cloud console. ...
    2. In the Explorer panel, select the project where you want to create the dataset.

    How do I manually create a dataset? ›

    To do so, type a value in each empty cell. After you have typed a value, you can press the Tab or Enter key to move to the next cell. Similarly, when you reach the last column in the dataset, you can press the Tab or Enter key to create a new row.

    How do I create my own data set? ›

    Preparing Your Dataset for Machine Learning: 10 Basic Techniques That Make Your Data Better
    1. Articulate the problem early.
    2. Establish data collection mechanisms. ...
    3. Check your data quality.
    4. Format data to make it consistent.
    5. Reduce data.
    6. Complete data cleaning.
    7. Create new features out of existing ones.
    Mar 19, 2021

    How much data is needed to train a model? ›

    For example, if you have daily sales data and you expect that it exhibits annual seasonality, you should have more than 365 data points to train a successful model. If you have hourly data and you expect your data exhibits weekly seasonality, you should have more than 7*24 = 168 observations to train a model.

    What are computer vision models explain giving examples? ›

    1) What is a computer vision model? A computer vision (CV) model is a processing block that takes uploaded inputs, like images or videos, and predicts or returns pre-learned concepts or labels. Examples of this technology include image recognition, visual recognition, and facial recognition.

    What is training a data model? ›

    A training model is a dataset that is used to train an ML algorithm. It consists of the sample output data and the corresponding sets of input data that have an influence on the output. The training model is used to run the input data through the algorithm to correlate the processed output against the sample output.

    What is meant by training data set? ›

    Training data (or a training dataset) is the initial data used to train machine learning models. Training datasets are fed to machine learning algorithms to teach them how to make predictions or perform a desired task.

    What makes good training data? ›

    Training data must be labeled - that is, enriched or annotated - to teach the machine how to recognize the outcomes your model is designed to detect. Unsupervised learning uses unlabeled data to find patterns in the data, such as inferences or clustering of data points.

    How many types of computer vision are there? ›

    Different types of computer vision include image segmentation, object detection, facial recognition, edge detection, pattern detection, image classification, and feature matching.

    What are the main components of computer vision? ›

    The major components of a machine vision system include the lighting, lens, image sensor, vision processing, and communications. Lighting illuminates the part to be inspected allowing its features to stand out so they can be clearly seen by camera.

    What is the process of computer vision? ›

    Computer vision is a field of artificial intelligence that trains computers to interpret and understand the visual world. Using digital images from cameras and videos and deep learning models, machines can accurately identify and classify objects — and then react to what they “see.”

    What are the principles of computer vision? ›

    • Overview.
    • Change Detection.
    • Gaussian Mixture Model.
    • Object Tracking using Template Matching.
    • Tracking by Feature Detection.

    What are the 5 data sets? ›

    They are:
    • Numerical data sets.
    • Bivariate data sets.
    • Multivariate data sets.
    • Categorical data sets.
    • Correlation data sets.

    What are the two main steps for creating a DataSet? ›

    The process of creating a dataset involves three important steps:
    • Data Acquisition.
    • Data Cleaning.
    • Data Labeling.
    Feb 10, 2021

    What are the important steps of data preparation process? ›

    Data preparation follows a series of steps that starts with collecting the right data, followed by cleaning, labeling, and then validation and visualization.
    1. Collect data. Collecting data is the process of assembling all the data you need for ML. ...
    2. Clean data. ...
    3. Label data. ...
    4. Validate and visualize.

    What are the methods of DataSet? ›

    DataSet Methods
    Clear()It is used to clear the DataSet of any data by removing all rows in all tables.
    Clone()It is used to copy the structure of the DataSet.
    Copy()It is used to copy both the structure and data for this DataSet.
    12 more rows

    What are the three types of datasets? ›

    Finally, coming on the types of Data Sets, we define them into three categories namely, Record Data, Graph-based Data, and Ordered Data.

    How do you prepare a data set for analysis? ›

    Data preparation steps
    1. Gather data. The data preparation process begins with finding the right data. ...
    2. Discover and assess data. After collecting the data, it is important to discover each dataset. ...
    3. Cleanse and validate data. ...
    4. Transform and enrich data. ...
    5. Store data.

    How do you create a deep learning training set? ›

    Steps for Preparing Good Training Datasets
    1. Identify Your Goal. ...
    2. Select Suitable Algorithms. ...
    3. Determine Cost-Effective Data Collection Strategies. ...
    4. Identify the Right Dataset Annotation Methods. ...
    5. Optimize Your Dataset Annotation & Augmentation Workflow. ...
    6. Clean Up Your Dataset. ...
    7. Closely Monitor Model Training.
    Feb 14, 2020

    How do you explain a data set? ›

    What Is a Dataset? A dataset is a collection of data within a database. Typically, datasets take on a tabular format consisting of rows and columns. Each column represents a specific variable, while each row corresponds to a specific value.

    What is the format of a data set? ›

    Depending on the size of your data, datasets can be provided as XLS or CSV. If you are looking to use a compressed version of a large amount of data, a CSV file is best for this – but bear in mind that CSV files are designed to be read by machines and do not allow any formatting.

    How do you train a model using dataset? ›

    Train/Test is a method to measure the accuracy of your model. It is called Train/Test because you split the data set into two sets: a training set and a testing set. 80% for training, and 20% for testing. You train the model using the training set.

    How do you train a model for a data set? ›

    3 steps to training a machine learning model
    1. Step 1: Begin with existing data. Machine learning requires us to have existing data—not the data our application will use when we run it, but data to learn from. ...
    2. Step 2: Analyze data to identify patterns. ...
    3. Step 3: Make predictions.

    Can you train a model with multiple datasets? ›

    Multiple Dataset feature allows you to train your model on multiple datasets which helps fine-tune your model to offer accurate recommendations and improve the end-user experience over time.

    How do you train a model for image classification? ›

    To train the image classifier with PyTorch, you need to complete the following steps:
    1. Load the data. If you've done the previous step of this tutorial, you've handled this already.
    2. Define a Convolution Neural Network.
    3. Define a loss function.
    4. Train the model on the training data.
    5. Test the network on the test data.
    Jun 22, 2022

    What is the biggest computer vision model? ›

    SEER v2. The second version of SEER was scaled to 10 billion parameters making it the largest computer vision model of its kind.

    Which Python framework is best for computer vision? ›

    1. OpenCV. OpenCV is an open-source library that was developed by Intel in the year 2000. It is mostly used in computer vision tasks such as object detection, face detection, face recognition, image segmentation, etc but also contains a lot of useful functions that you may need in ML.

    What are the 5 processes in training and development? ›

    Training can be viewed as a process comprised of five related stages or activities: assessment, motivation, design, delivery, and evaluation.
    Explore five stages of the training process:
    • Assess.
    • Motivate.
    • Design.
    • Deliver.
    • Evaluate.

    What are the five steps of data modeling? ›

    • Step 1: Gathering Business requirements: ...
    • Step 2: Identification of Entities: ...
    • Step 3: Conceptual Data Model: ...
    • Step 4: Finalization of attributes and Design of Logical Data Model. ...
    • Step 5: Creation of Physical tables in database:

    What are the different types of training data? ›

    Types of Training Data. A brief introduction to types of training data including structured, unstructured, and semi-structured data. Training data is used in three primary types of machine learning: supervised, unsupervised, and semi-supervised learning.

    How do you create a training and testing dataset? ›

    Using Train Test Split In Python
    1. Load the Data Set.
    2. Arrange Data into Features and Target.
    3. Split Data Into Training and Testing Sets.
    4. Import the Model You Want to Use.
    5. Make An Instance of the Model.
    6. Train the Model on the Data.
    7. Predict Labels of Unseen Test Data.
    8. Parameters vs Hyperparameters.
    Jul 28, 2022

    What are the 4 basic steps to how a computer works? ›

    A computer system works by combining input, storage space, processing, and output. These four are the major components of a Computer.

    What are the 3 ways to create custom models in the visual ml tool choose three? ›

    Custom Modeling in Visual ML
    • importing custom algorithms defined in your project library or the global Python library of the Dataiku instance;
    • importing custom algorithms from the Python libraries included in the code environment used by the visual ML tool; and.
    • using a prediction algorithm that is part of a plugin.

    What are the three steps in the operation of a machine vision system briefly describe them? ›

    Here is an introduction to the three main functions of machine vision: positioning function, measurement function, and defect detection function. The technology of ingaas linear image sensor also adopts the machine vision.

    What are the main features of computer vision? ›

    In computer vision and image processing, a feature is a piece of information about the content of an image; typically about whether a certain region of the image has certain properties.
    • 2.1 Edges.
    • 2.2 Corners / interest points.
    • 2.3 Blobs / regions of interest points.
    • 2.4 Ridges.

    What are the basic steps involved in the image processing stage? ›

    Fundamental Image Processing Steps
    • Image Acquisition. Image acquisition is the first step in image processing. ...
    • Image Enhancement. ...
    • Image Restoration. ...
    • Color Image Processing. ...
    • Wavelets and Multiresolution Processing. ...
    • Compression. ...
    • Morphological Processing. ...
    • Segmentation.
    Nov 22, 2022

    What are the four 4 stages of computing order? ›

    The sequence of events in processing information, which includes (1) input, (2) processing, (3) storage and (4) output.

    What are the 7 major components of a computer system and give a quick explanation? ›

    This Blog Includes:
    • Motherboard.
    • Input Unit.
    • Output Unit.
    • Central Processing Unit (CPU)
    • Graphics Processing Unit (GPU)
    • Random Access Memory (RAM)
    • Storage Unit.

    What are the five 5 basic computer operations? ›

    There are five basic types of computer operations: inputting, processing, outputting, storing and controlling. Computer operations are executed by the five primary functional units that make up a computer system. The units correspond directly to the five types of operations.


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