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ACM MM 2013 video spotlight

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Elisabeth Chatzilari

on 6 September 2013

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Transcript of ACM MM 2013 video spotlight

Under the surface
Introducing visual ambiguity
Learning Visual Ambiguity
It happens when a classifier confuses the target concept with another concept
Utilizing Visual Ambiguity
Characterize images as non trustworthy when they contain ambiguous concepts.
Finding what confuses a classifier
No, this is a
tree honey!
Mom is this grass?
I realized that I can not
distinguish the grass
from a tree.
grass classifier
grass classifier
Characterizing images as non-trustworthy
The tags of this image show that it contains trees. But I confuse the grass with trees; I do not trust myself to find the location of the grass. I'd better skip this image.
grass classifier
where we can automatically detect the location of the targeted object
Selecting images
grass classifier
I can distinguish between chicken and grass; I will keep this image.
Designed to exploit the abundance of social media.
We have the luxury to dismiss the ambiguous images due to the high availability of tagged images offered by social sites.
Friday 25 October
Room 118-119
15:00 - 18:15

Finding what confuses
a classifier
Background music: "Hungaria" by Latché Swing (http://www.jamendo.com/en/artist/latche_swing_(3))
Full transcript