Thursday, June 30, 2022
Google search engine

What are Best Image Annotation Tools and Companies?

How Companies Use Image Annotation to Produce High-Quality Training Data

The annotation of images is the base for the majority of Artificial Intelligence (AI) products that you interact with. It’s one of the primary methods that is used in Computer Vision (CV). In the process of image annotation, labelers employ metadata, also known as tags, to define the features of the data that you would like to train your AI model to to recognize. These images are used to teach the computer how to recognize these characteristics when presented with new unlabeled data.

Take a moment to think about the time when you were a child. Somewhere along the way you were taught about what a dog was. After seeing a lot of dogs, you began to comprehend the different kinds of dogs, and how the dog differed from a cat or porcine. As with us, computers require lots of examples to help them learn to categorize objects. Images annotation offers the examples in a way that can be understood by computers.

With the increasing accessibility of data from images to companies that are who are interested in AI and machine learning, the number of applications that depend on image annotation has increased exponentially. The creation of a comprehensive, efficient process for image annotation is becoming increasingly crucial for companies working in this sector in machine-learning (ML).

Applications of Image Annotation

For a complete list of applications currently in use which make use of image annotations you’d need to go through hundreds of pages. We’ll now highlight the most compelling applications across a variety of industries.


By using drones and satellite images farmers can make use of AI to reap numerous benefits such as estimation of crop yield, evaluation of soil conditions, and many other. A fascinating example of the use of image annotation is provided by John Deere. John Deere annotations are made to images taken by cameras to distinguish between crops and weeds at an pixel-level. They use this information to apply pesticides just on those areas where weeds are increasing rather than across the entire field, which saves huge amounts of money from pesticide usage every year.


Doctors are now enhancing their diagnosis by using AI-powered tools. For example, AI can examine radiology images to determine the probability of certain cancers that are present. In one instance the model is trained by teams by using thousands of scans that are labeled with non-cancerous and cancerous spots until the machine is able to recognize the difference from itself. Although AI isn’t designed to replace doctors, it could be used as a way to test your gut and provide greater accuracy to vital health decisions.


The manufacturers are studying how using image annotations can be used to capture data on inventory levels at their stores. They’re training computers in the evaluation of sensor data from images to figure out whether a product is about to become out of stock and will require more units. Certain manufacturers also use images to analyze the infrastructure in their manufacturing plant. The teams of their team label the image data of equipment, and this is used to train computers to detect specific failures or defects that can lead to faster fixes and better overall maintenance.


Although the financial sector isn’t yet fully harnessing the potential of image annotation initiatives There are a few firms making significant progress in this area. Caixabank is one of them. It employs face recognition technology to confirm the identity of the customers who withdraw cash at ATMs. This is accomplished through an image annotation procedure known as pose-point. It is a way to map facial features such as eye and mouth. Facial recognition provides a faster more precise method to determine identity, thus reducing the risk of fraud. Image annotation is crucial in identifying receipts to be reimbursed or depositing checks using the mobile device.


Image annotation is crucial in a myriad of AI uses. Are you looking to utilize AI to give the correct results for an product, such as a person trying to find jeans? An image annotation is needed to create a model which can scan through catalogs of items and deliver the results the customer would like to see. Many retailers are also using robots inside their stores. The robots gather images of shelves in order to determine the condition of a product, indicating it is either low or unavailable, which means that it is in need of replenishment. They also scan barcodes to get product information by through a process called image transcription, which is one of the methods for image annotation that is described below.

Types of Image Annotation

There are three types of image annotation. the type you choose to suit your needs will be determined by the difficulty of your project. For each the higher quality of images used will be more precise the resultant AI predictions will be.


The simplest and most effective method to annotation of images classification only applies just one label to each image. For instance, you may need to go through and categorize a set of photos of the shelves of a supermarket and figure out which contain soda or do not. This technique is ideal for recording abstract information like the one above or even the time of day when cars are present in the picture or filtering out images that don’t fulfill the criteria from the beginning. Although classification is the most efficient image annotation method, it only gives an all-encompassing description, it’s one of the most ambiguous of the three kinds that we’ve identified since it doesn’t specify where an object is located in the picture.

Object Detection

Annotators using object detection receive specific objects they must label within an image. In the event that the picture is classified by having soda then this goes one step further by displaying the location of the soda within the image, or in case you’re specifically looking for the location where the soda in orange is. There are many methods that are used to identify objects, which includes methods such as:

  • 2-D Bounding boxes Annotators use squares and rectangles to determine the exact location of target objects. This is among the most well-known techniques within the field of image annotation.
  • Cuboids also known as 3D Bounding boxes Annotators apply cubes on the object of interest to establish the place of the object and the size that the target object is located.
  • Polygonal Segmentation When objects of interest are not symmetrical and can’t fit into a rectangular box Annotators employ complicated polygons to determine their position.
  • lines and spline Annotators recognize key boundaries and curves in an image to distinguish regions. For example, annotations can identify the various lanes on an auto-pilot car image annotation projects.

Since object detection allows to use multiple lines or boxes This method is not the most accurate. It does give the location of the object, and is a rapid annotation.

Semantic Segmentation

Semantic Segmentation resolves the object detection problem of overlap by ensuring that each element of an image is part of a single category. Typically, it is it is done at the pixel level this method requires annotators define different categories (such as car, pedestrian or signs) for each pixel. This helps teach an AI model how to identify and categorize objects even if they’re blocked. For instance, if you own a shop that blocks portion of your image, semantic segmentation could be used to determine the appearance of orange soda at the pixel level so that the model can be able to determine that it is , in actual fact orange soda.

It is important to note that the three methods for image annotation that we’ve described above are by no by any means the only options. Other types you may have heard about include those specifically used for facial recognition, an example being landmark annotation (where the annotator plots characteristics–think eyes, nose, and mouth–using pose-point annotation). Image transcription is a different technique, which is employed when there is multimodal information within the data–i.e. there’s text within the image, and the image requires extraction.

How to Make Image Annotation Easier

The general idea is that annotation of images is difficult because of many of the same reasons creating the entire AI model is difficult. AI requires massive amounts of top-quality data to function properly (the more examples computers can learn from it, the better it can achieve) and a large group of people to annotation that data, as well as extensive data pipelines to run. For many companies it is likely that the cost, time and effort needed could not be achievable. For those who do not have the internal resources to complete an end-to-end photo annotation task, using third-party vendors for help is an alternative. They can supply the images, annotations tools, as well as know-how to help with this huge undertaking.

In the case of image annotation, in particular images can come with a variety of issues. The image could have poor lighting, the object could be obscured, or certain parts of the image might appear unrecognizable to even the human eye. Teams need to decide how to convey these elements before beginning an annotation project for images. Teams should also be cautious about the names they use for their labels and distinguishing classes since these elements can cause confusion for the annotator and, ultimately, the machine. Classifications that appear too similar for example, can cause unneeded confusion.

When you solve these issues anticipate to come up with an AI solution that is more precise and speed. When executed right and precisely image annotation can provide excellent training data that is the most important element of any successful AI model.

Information From Appen Images Annotation Expert Liz Otto Hamel

Appen relies on our experts to assist with images annotation projects to our clients’ machine-learning tools. Liz Otto Hamel, one of our product managers assists in ensuring that our Appen Data Annotation Platform is in line with the industry standard for offering quality tools and capabilities for image annotation. Liz is a specialist of academic studies and has an Ph.D. in the field of research at Stanford University. Her top tips to assess and fulfill requirements for annotation of images includes:

  • Determine the extent of your project. Begin with a concise and precise description of the goals for your venture. The requirements of your data labeled such as annotation geometries, metadata, ontologies, as well as formats will come from the goals of the business project. The business value that you use to guide the project’s image annotation will ensure that you are in a straight line.
  • Iterate. Define an initial set of specifications for your labeled data , and then conduct a test. Label a small portion of the data you label yourself. When you experiment, you’ll find edge cases that have to be considered in the project’s requirements. It is helpful to work with a partner for data labeling who has tools and knowledge which covers a broad range of use cases for annotations and can be adapted to meet your requirements.
  • The plan is to incorporate. To combat data drift, which is the change in the kinds of data that your model is seeing in the real world, you will need to develop a flexible automated pipeline of training data that can continuously build your model by using fresh data. It is helpful to partner with a partner for data labeling that is scalable in the event that the volume of training data that you require is increasing. The greater the audience that interacts on your model the more quickly the amount of annotation required to keep your model up-to-date will increase as well. It is essential to anticipate this right from the beginning.

What Appen Can Do For You

At Appen we have annotation of data experience spans more than 20 years, and during that time we’ve acquired the most advanced tools and know-how on the most effective method for implementing productive annotation initiatives. With our advanced annotation platform and our team of annotators specifically tailored to your needs and a careful human oversight by our AI experts We provide you with the highest-quality training datasets you need to build world-class models at large scale. Our annotation of text and image annotation audio annotation along with video annotation, can meet the needs of the short and long-term of your staff and company. Whatever your requirements for data annotation could be the technology, the crowd and the managed service team is ready to help in the implementation and maintenance of all of your AI or ML projects.

Related Articles


Please enter your comment!
Please enter your name here

Stay Connected

- Advertisement -spot_img

Latest Articles