Visual Attention

what is visual attention mechanism?

The visual attention mechanism may have at least the following components:

• the selection of a region of interest in the visual field;
• the selection of feature dimensions and values of interest;
• the control of information flow through the network of neurons that constitutes the visual system;
• the shifting from one selected region to the next in time.

reference:
http://homepages.inf.ed.ac.uk/rbf/CVonline/LOCAL_COPIES/SUN1/attn.htm