The Research of Bottom-Up and Top-Down Combination Visual Attention Calculative Method

Visual Attention: Bottom-Up Versus Top-Down

Visual attention is attracted by salient stimuli that 'pop out' from their surroundings. Attention can also be voluntarily directed to objects of current importance to the observer. What happens in the brain when these two processes interact?

Visual search: bottom-up or top-down?

The aim of the experiments in this paper was to explore the relationship between top-down and bottom-up processes in visual search. Employing behavioral techniques, we first consider the possible role of the magnocellular visual pathway in visual search, and find that visual search does not necessarily depend on processing by this visual sub-system. We next use functional imaging (positron emis...

Relative Influence of Bottom-Up and Top-Down Attention

Attention and memory are very closely related and their aim is to simplify the acquired data into an intelligent structured data set. Two main points are discussed in this paper. The first one is the presentation of a novel visual attention model for still images which includes both a bottom-up and a top-down approach. The bottom-up model is based on structures rarity within the image during th...

Bottom-up, top-down

Dense crowd analysis through bottom-up and top-down attention

Video analysis of difficult scenarios like dense crowds can highly benefit from the use of algorithms which model part of human attention. Interesting motion which is new or surprising can be computed on large groups of people based on a two step approach. A bottom-up attention model built upon motion rarity compared to the rest of the motion in the same frame and a top-down approach which inhi...