visual perception Flashcards
what does gestualt perception of form study
human vision is biased to look for structure and chooses the simplest interpretation of an image
gestault principles
laws of human perception; find order, recognise groups, simplify complex images
emergence
seeing the whole picture
proximity
object closer together are perceived as a group
closure
you can still see the complete shape even when some parts arent visible
continuity
grouping a series of elements when they follow the same path
similarity
group together objects that share visual features
common region
objects in the same region are grouped together as one
figure/ground
images are seperated into the foreground and background in order to simplify them with more attention given to the foreground
visual structure
helps us scan and understand information quicker
spacing grouping and alignment can reduce search time
pre-attentive processing
we are able to perceive something without using our eyes to focus on it
what makes an action pre-attentive
when information is gained in less than 200 - 250 ms (less time than we would need to move our eyes)
pop out features (pre-attentive features)
visible features that have the ability to draw our attention
what are some criteria for pop out features
they must be different from everything around them
colour is usually better than shape
combined features need more search time therefore theyre not pre-attentive
what is the point of attention guidance and how do we do it
done through pre-attentive processing
directs our attention to critical information
conveys information at a glance
