.

In this regard, what does viewpoint invariant mean?

One of the most defining factors of the recognition-by-components theory is that it enables us to recognize objects regardless of viewing angle; this is known as viewpoint invariance. It is proposed that the reason for this effect is the invariant edge properties of geons.

Subsequently, question is, why do we need object recognition? The goal of object detection is to detect all instances of objects from a known class, such as people, cars or faces in an image. In the case of a fixed rigid object only one example may be needed, but more generally multiple training examples are necessary to capture certain aspects of class variability.

Similarly one may ask, what part of the brain is responsible for object recognition?

The perirhinal cortex plays an important role in object recognition and in storing information (memories) about objects. It is highly connected to other brain structures.

How do we Recognise objects?

The processing of visual data happens in the ventral visual stream. It is a hierarchy of areas in the brain which helps in object recognition. Humans can easily recognize different sized objects and put them in the same category. This happens because of the invariances we develop.