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TZOFFSETFROM:-0500 TZOFFSETTO:-0400 TZNAME:America/New_York EDT END:DAYLIGHT END:VTIMEZONE BEGIN:VEVENT UID:5339486a595102321709fa4a70a4a9f3 CATEGORIES:Human and computer vision series:Spring 2011 CREATED:20151203T141542 SUMMARY:What you see where you are not looking LOCATION:MIT\, Brain and Cognitive Sciences Department and Computer Science and Arti ficial Intelligence Lab DESCRIPTION:What is the representation in early vision? Considerable research has demon strated that the representation is not equally faithful throughout the visu al field; representation appears to be coarser in peripheral and unattended vision, perhaps as a strategy for dealing with an information bottleneck i n visual processing. In the last few years, a convergence of evidence has s uggested that in peripheral and unattended regions, the information availab le consists of summary statistics. For a complex set of statistics, such a representation can provide a rich and detailed percept of many aspects of a visual scene. However, such a representation is also lossy; we would expec t the inherent ambiguities and confusions to have profound implications for vision. For example, a complex pattern, viewed peripherally, might be poor ly represented by its summary statistics, leading to the degraded recogniti on experienced under conditions of visual crowding. Difficult visual search might occur when summary statistics could not adequately discriminate betw een a target-present and distractor-only patch of the stimuli. Certain illu sory percepts might arise from valid interpretations of the available - los sy - information. It is precisely visual tasks upon which a statistical rep resentation has significant impact that provide the evidence for such a rep resentation in early vision. I will summarize recent evidence that early vi sion computes summary statistics based upon such tasks.\nBackground Reading (http://www.journalofvision.org/content/9/12/13.full) \n X-ALT-DESC;FMTTYPE=text/html:
What is the representation in early vision? Considerable research has de monstrated that the representation is not equally faithful throughout the v isual field; representation appears to be coarser in peripheral and unatten ded vision, perhaps as a strategy for dealing with an information bottlenec k in visual processing. In the last few years, a convergence of evidence ha s suggested that in peripheral and unattended regions, the information avai lable consists of summary statistics. For a complex set of statistics, such a representation can provide a rich and detailed percept of many aspects o f a visual scene. However, such a representation is also lossy; we would ex pect the inherent ambiguities and confusions to have profound implications for vision. For example, a complex pattern, viewed peripherally, might be p oorly represented by its summary statistics, leading to the degraded recogn ition experienced under conditions of visual crowding. Difficult visual sea rch might occur when summary statistics could not adequately discriminate b etween a target-present and distractor-only patch of the stimuli. Certain i llusory percepts might arise from valid interpretations of the available - lossy - information. It is precisely visual tasks upon which a statistical representation has significant impact that provide the evidence for such a representation in early vision. I will summarize recent evidence that early vision computes summary statistics based upon such tasks.
CONTACT:Dr. Ruth Rosenholtz X-EXTRAINFO:Dr. Ruth Rosenholtz (http://www-bcs.mit.edu/people/rosenholtz) DTSTAMP:20240328T085811 DTSTART;TZID=America/New_York:20110228T120000 DTEND;TZID=America/New_York:20110228T190000 SEQUENCE:0 TRANSP:OPAQUE END:VEVENT END:VCALENDAR