Annotations are the metadata attached to image, audio, and text datasets. Data Annotations are used in AI and ML to train models and make it easier to comprehend the semantics of objects. This, in turn, helps the algorithm to function better and increase its performance.
Every sample/example is subjected to annotation, which involves labeling or categorizing items in each frame. This is because the supervised machine learning and deep learning model require this data to learn.
Types of Annotations:
1. Image Labelling
Image Annotation is nothing but labelling or categorising a picture for training an ML model. Then, annotation is made to separate the item from the images on various other classes, boundaries, boxes, recognitions, segmenting masks, and many more.
2. Bounding Box
While annotating, if you’re drawing a rectangle enclosing an object, then it’s called a Bounding Box. The edges of the enclosing boxes should contact the identified object’s outermost pixels. The borders are coordinated to encompass an image to recognise a reference point or anything detected and create a box.
3. 3D Cuboids:
This type of annotation is a little trendy, all these days, there were just 2D annotations, and now it’s a 3 Dimensional bounding box to enhance the depth factor of any image to be targeted. In addition, it helps you navigate flat images and construct to train the detection or estimation of 3D cuboids or 6DoF size.
4. Polygons:
You can discover that different items accidentally end up in the same region while building a 3D cuboid or bounding box. This circumstance is far from the former since the machine learning model can start being perplexed and mislabel images.
5. Text Annotations:
Text annotation is labelling a piece of a sentence or a word and categorising it to train a model in identifying and classifying for further purposes.
Text annotations are generally used for translation. The translational feature is a linguistic annotation helping you recognise comprehension. Moreover, standard annotations can be automatically extracted from aligned translated documents after translation.
Authored by:
Abhigna Arcot
Senior Content Writer
