The Omnibrain is a psychology graduate student at an online university. He hopes that the three weeks and $29.95 that he is spending on his Ph.D. will get him a job at a Tier 1 research university. Do online universities have postdocs? Ok...just kidding, he is really a Ph.D. Candidate in Psychology studying high level vision. You know... stuff like scene & object perception.
While not an official contributer to 'Of Two Minds,' Shelley's sidekick is an African Grey parrot named Pepper. His heros are Irene Pepperberg, Alex, and Rachel Carson. He spends his time learning Mandarin and writing the Great American novel.
I'm in the middle of my qualification exams and ran across this interesting paper:
Liu, Z Kersten, D Knill, DC Dissociating stimulus information from internal representation--a case study in object recognition. Vision research. 1999; 39(3): 603-12.
However, I'm very confused about them calling the figure on the left an object. This is a collection of objects in 3D space - making it a scene. I'm not sure that this nullifies their model - but this is not object recognition.
People should really start using ideal observer analysis with scene perception...
Brain & Behavior
Comments
Umm. But, that is the point. They are an "object". They are an object called a "scene". I.e., when you look at them, you naturally group them together as one "thing". In a 3D application, you might even do this implicitly, if you planned to move them all at the same time, in the same way, or export them, then reimport them someplace else, or you wanted to make multiple copies of the same "collection" of objects. So, they "are" an object, at least in the sense that our brain sees them as "belonging" to the same meta-object.
Posted by: Kagehi | June 25, 2009 5:29 PM
"People should really start using ideal observer analysis with scene perception... " it's true.
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Posted by: Psikolog Uğur DALAN | July 10, 2009 5:24 AM
I'm with you.
Posted by: dennis | August 15, 2009 2:58 AM
I'm teaching about opponent processes in color vision today and thought I'd share one of my favorite examples. This is how you use the human visual system to turn a black and white photo into color. Try it out:
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