?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Coarse+blobs+or+fine+edges%3F+Evidence+that+information+diagnosticity+changes+the+perception+of+complex+visual+stimuli&rft.creator=Oliva%2C+Aude&rft.creator=Schyns%2C+Phillipe+G&rft.subject=Cognitive+Psychology&rft.subject=Machine+Vision&rft.subject=Physiological+Psychology&rft.description=Efficient+categorizations+of+complex+visual+stimuli+require+effective+encodings+of+their+distinctive+properties.+However%2C+the+question+remains+of+how+processes+of+object+and+scene+categorization+use+the+information+associated+with+different+perceptual+spatial+scales.+The+psychophysics+of+scale+perception+suggests+a+scenario+in+which+recognition+uses+coarse+blobs+before+fine+scale+edges%2C+because+the+former+is+perceptually+available+before+the+latter.+Although+possible%2C+this+perceptually+determined+scenario+neglects+the+nature+of+the+task+the+recognition+system+must+solve.+If+different+spatial+scales+transmit+different+information+about+the+input%2C+an+identical+scene+might+be+flexibly+encoded+and+perceived+at+the+scale+that+optimizes+information+for+the+considered+task.+This+paper+tests+the+hypothesis+that+scale+diagnosticity+can+determine+scale+selection+for+recognition.+Experiment+1+tested+whether+coarse+and+fine+spatial+scales+were+both+available+at+the+onset+of+scene+categorization.+The+second+experiment+tested+that+the+selection+of+one+scale+could+change+depending+on+the+diagnostic+information+present+at+this+scale.+The+third+and+fourth+experiments+investigated+whether+scale-specific+cues+were+independently+processed%2C+or+whether+they+perceptually+cooperated+in+the+recognition+of+the+input+scene.+Results+suggest+that+a+mandatory+perception+of+multiple+spatial+scales+promotes+flexible+scene+encodings%2C+perceptions+and+categorizations.&rft.date=1997&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F707%2F1%2Fscene_rewrite.html&rft.format=application%2Fpostscript&rft.identifier=http%3A%2F%2Fcogprints.org%2F707%2F4%2Fattention.ps&rft.identifier=++Oliva%2C+Aude+and+Schyns%2C+Phillipe+G++(1997)+Coarse+blobs+or+fine+edges%3F+Evidence+that+information+diagnosticity+changes+the+perception+of+complex+visual+stimuli.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F707%2F