Show & Tell

Lighthouse


25 March 2014

Philo van Kemenade @phivk








1

Human Computation 

in online video storytelling

Video is Hard 
for Computers

 Challenges 




The Semantic Gap


“The semantic gap is the lack of coincidence between the information that one can extract from the visual data and the interpretation that the same data have for a user in a given situation.”
Smeulders, Worring, Santini, Gupta & Jain (2000)

 A Solution 



 But 

Algorithms fail to perform reliably AND generally
The wider the domain, the larger the gap

 A Wide Domain 


 Another SOLUTION 



 Purpose 


 Task 


 Motivation 

 setup 


 Interface