Textbook Notes (362,879)
Canada (158,081)
Psychology (3,261)
PSYC 2390 (118)
Lana Trick (87)

Pages 114-128

6 Pages
Unlock Document

University of Guelph
PSYC 2390
Lana Trick

PSYC2390 Chapter Notes Pages 114128Perceiving Scenes and Objects in ScenesObjectscompact acted uponScenesextended in space acted withinPerceiving the Gist of a SceneGeneral description of a scenethe gist of the sceneEg flipping through channels you are able to deduce the gist of each scene you see even if you are only seeing each clip for a second or lessResearch by Mary Potter 1976 showed that observers could identify scenes even if they were only shown for 250 ms 14 of a second with almost 100 accuracyFeiFei 2007 did an experiment showing different scenes for varying amounts of time from 27 ms to 500 ms He used masking between Masking stimulus often randomly oriented lines shown immediately after scenes to eliminate any persistence of vision the perception of any stimulus persists for about 250 ms after a stimulus is extinguishedoAt brief durations only saw lightdark areas of an imageoBy 67 ms subjects were able to identify large objectsoBy 500 ms small objects and details were perceivable Aude Oliva and Antonio Torralba 2001 2006 suggest observers use global image featuresinformation that can be perceived rapidly and are associated with specific types of scenes such asoDegree of naturalnessnatural scenes have textured zones and undulating contours manmade scenes are mostly straight lines horizontal or verticaloDegree of opennessopen scenes have a visible horizon line and contain few objectsoDegree of roughnesssmooth scenes low roughness had few small elements rough scenes contain more small elements and are more complexoDegree of expansionconvergence of parallel lines that seem to disappear into the distance eg perspective lines indicates a high degree of expansion this element depends on the viewpoint of the observeroColoursome scenes have characteristic colours eg green in a forestGlobal image features are holistic and rapidly perceived and contain information that allow us to perceive a scenes structure and spatial layoutCharacteristics which frequently occur in a certain type of scene
More Less

Related notes for PSYC 2390

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.