Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
16 Cards in this Set
- Front
- Back
|
Pattern Recognition |
Process of matching organized sensory input to stored representations in memory |
|
|
Template Theory |
Does the precept match anything we have stored in memory? Multiple templates held in memory, recognize incoming stimuli by comparing templates, if no matches found then create new memory -works well in controlled/standardized environments, input is much more variable in the real world |
|
|
Problems of Template Theory |
Obstructed objects Rotations/transformations Cannot account for flexibility of our pattern recognition abilities |
|
|
Prototype Theories |
Modification of template matching that's more flexible, takes various instances of an object and abstracts out the common characteristics to create a prototype |
|
|
Feature Theory |
We store patterns as a set of features |
|
|
Pandemonium Model |
Feature Detector Model of Recognition |
|
|
Biederman's Recognition By Components Theory (RBC) |
-proposed we also break up objects into their parts in the process of recognizing them -parts=3 dimensional geons -we have an alphabet of ~36 geons -these geons connect to make objects |
|
|
Steps of RBC Theory |
-Object segmented into basic geons -We then classify the category of each sub-object, we know how to recognize them from all different views -One recognizes what the object that is composed by these feautures -small variations not critical |
|
|
Non-Accidental Properties |
Critical to identifying/distinguishing different geons; accidental properties are not; viewpoint independent |
|
|
Repetition Priming |
Evidence for geons, we can recognize objects faster when or more of the same geons in the object have been previously seen |
|
|
Evidence that Geons Exist |
Repetition priming experiment Eliminating certain line segments makes recognition a much harder task than erasing other line segments Crucial line segments: clearly demarcate geons |
|
|
RBC/geons problems |
Faces Natural vs man made objects No evidence for geons in brain |
|
|
Gestalt Principles of Perception |
-appear to have lots of ways in which we organize information into objects/groups -together they are called gestalt principles of conceptual organization -apparent motion |
|
|
Gestalt View of Perception: Basic Tenet |
The whole is more than a sum of its parts |
|
|
Gestalt View of Perception; Law of Pragnanz |
Individuals organize their experience in as simple, concise, symmetrical and complete a manner as possible -impose structure on what we see -group disparate elements in a visual scene into the most coherent and stable form |
|
|
Figure-Ground Organization |
One of the ways that we impose a coherent structure on visual scenes, organize perceptions by distinguishing between a figure and the background Figure: an object in a scene that is the focus of our attention/more prominent |
