Visual recognition

If the process of seeing goes first through analysing light, colours and space, before we actually see comes in the process of recognition.

The recognition process is the mind trying to interpret what he is seeing.

For this process, the mind uses its internal bibliography, its references, all what he knows. Which is why we all see another reality.

Here's a great article I found explaining the whole biological and neurological process of perception is a quite light way:

https://www.brainhq.com/brain-resources/brain-facts-myths/how-vision-works