Of Two Minds

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.

i-e700e8ea8aa97020b765b2a6797ebd16-liu.gif

People should really start using ideal observer analysis with scene perception…

Comments

  1. #1 Kagehi
    June 25, 2009

    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.

  2. #2 Psikolog Uğur DALAN
    July 10, 2009

    “People should really start using ideal observer analysis with scene perception… ” it’s true.
    Thank you gor your sharing.

    am ı share and translate this post for my website.
    Psikolog Uğur DALAN

  3. #3 dennis
    August 15, 2009

    I’m with you.

  4. #4 porno izle
    September 5, 2009

    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:

  5. #5 sikiş
    November 13, 2009

    “People should really start using ideal observer analysis with scene perception… ” it’s true.

  6. #6 A H
    December 10, 2009

    I came across an example of object vs scene perception in rats yesterday. Basically, task performance after a lesion for novel object recognition appeared to depend on the size of the box the object was viewed in. The authors (review authors) interpreted this result as a encoding the object as an object vs as a feature in a scene.

    Paper is here : http://www.bbsonline.org/Preprints/OldArchive/bbs.aggleton.html, the relevant paragraph is above section 3.2 and begins : “A final factor concerns the type of stimulus being tested.”

    “Engineering is hard, but science is damn near impossible!” — unknown

  7. #7 bramki obrotowe
    February 2, 2010

    This is owsome.