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My Phd Research Activities At INA

Main.MyPhdResearchActivitiesAtINA History

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! Video local signatures extraction
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!!! Video local signatures extraction
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! Short overview:
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! Short Illustrated Overview:
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!! Content-based video copy detection framework [[#lab2]]
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!!! Content-based video copy detection framework [[#lab2]]
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!! Distortion-based similarity search [[#lab3]]
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!!! Distortion-based similarity search [[#lab3]]
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!! INA television monitoring system [[#INAsyst]]
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!!! INA television monitoring system [[#INAsyst]]
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!! French television detection results ([[[Main.MyPhdResearchActivitiesAtINA.results|Other Results]]) [[#lab4]]
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!!! French television detection results ([[[Main.MyPhdResearchActivitiesAtINA.results|Other Results]]) [[#lab4]]
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!! What's a copy ? [[#lab1]]
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!!! What's a copy ? [[#lab1]]
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!!! My [=PhD=] Thesis (french): [+[[http://www-rocq.inria.fr/~ajoly/ajoly_thesis.pdf|pdf]]+]

!!! Short overview:
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! My [=PhD=] Thesis (french): [+[[http://www-rocq.inria.fr/~ajoly/ajoly_thesis.pdf|pdf]]+]

! Short overview:
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! What's a copy ? [[#lab1]]
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!! What's a copy ? [[#lab1]]
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->! Content-based video copy detection framework [[#lab2]]
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!! Content-based video copy detection framework [[#lab2]]
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->! Distortion-based similarity search [[#lab3]]
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!! Distortion-based similarity search [[#lab3]]
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->! INA television monitoring system [[#INAsyst]]
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!! INA television monitoring system [[#INAsyst]]
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->! French television detection results ([[[Main.MyPhdResearchActivitiesAtINA.results|Other Results]]) [[#lab4]]
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!! French television detection results ([[[Main.MyPhdResearchActivitiesAtINA.results|Other Results]]) [[#lab4]]
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!! My [=PhD=] Thesis (french): [+[[http://www-rocq.inria.fr/~ajoly/ajoly_thesis.pdf|pdf]]+]

!! Short overview:
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!!! My [=PhD=] Thesis (french): [+[[http://www-rocq.inria.fr/~ajoly/ajoly_thesis.pdf|pdf]]+]

!!! Short overview:
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->! What's a copy ? [[#lab1]]
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! What's a copy ? [[#lab1]]
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->[[#lab2|Content-based video copy detection framework]]\\
->[[#lab3|Distortion-based similarity search]]\\
->[[#INAsyst|INA television monitoring system]]\\
->[[#lab4|French television detection results]]\\
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[[#lab2|Content-based video copy detection framework]]\\
[[#lab3|Distortion-based similarity search]]\\
[[#INAsyst|INA television monitoring system]]\\
[[#lab4|French television detection results]]\\
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[[#lab1|What's a copy ?]]\\
[[#lab2|Content-based video copy detection framework]]\\
[[#lab3|Distortion-based similarity search]]\\
[[#INAsyst|INA television monitoring system]]\\
[[#lab4|French television detection results]]\\

! What's a copy ? [[#lab1]]
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->[[#lab1|What's a copy ?]]\\
->[[#lab2|Content-based video copy detection framework]]\\
->[[#lab3|Distortion-based similarity search]]\\
->[[#INAsyst|INA television monitoring system]]\\
->[[#lab4|French television detection results]]\\

->! What's a copy ? [[#lab1]]
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! Content-based video copy detection framework [[#lab2]]
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->! Content-based video copy detection framework [[#lab2]]
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! Distortion-based similarity search [[#lab3]]
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->! Distortion-based similarity search [[#lab3]]
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! INA television monitoring system [[#INAsyst]]
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->! INA television monitoring system [[#INAsyst]]
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! French television detection results ([[[Main.MyPhdResearchActivitiesAtINA.results|Other Results]]) [[#lab4]]
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->! French television detection results ([[[Main.MyPhdResearchActivitiesAtINA.results|Other Results]]) [[#lab4]]
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!! Short overview:
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!! My [=PhD=] Thesis: [+[[http://www-rocq.inria.fr/~ajoly/ajoly_thesis.pdf|pdf (in french)]]+]
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!! My [=PhD=] Thesis (french): [+[[http://www-rocq.inria.fr/~ajoly/ajoly_thesis.pdf|pdf]]+]
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! My PhD Thesis: [+[[http://www-rocq.inria.fr/~ajoly/ajoly_thesis.pdf|pdf (in french)]]+]
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!! My [=PhD=] Thesis: [+[[http://www-rocq.inria.fr/~ajoly/ajoly_thesis.pdf|pdf (in french)]]+]
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! My [[PhD]] Thesis: [+[[http://www-rocq.inria.fr/~ajoly/ajoly_thesis.pdf|PhD pdf (in french)]]+]
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! My PhD Thesis: [+[[http://www-rocq.inria.fr/~ajoly/ajoly_thesis.pdf|pdf (in french)]]+]
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! My [PhD] Thesis: [+[[http://www-rocq.inria.fr/~ajoly/ajoly_thesis.pdf|PhD pdf (in french)]]+]
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! My [[PhD]] Thesis: [+[[http://www-rocq.inria.fr/~ajoly/ajoly_thesis.pdf|PhD pdf (in french)]]+]
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! My PhD Thesis: [+[[http://www-rocq.inria.fr/~ajoly/ajoly_thesis.pdf|PhD pdf (in french)]]+]
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! My [PhD] Thesis: [+[[http://www-rocq.inria.fr/~ajoly/ajoly_thesis.pdf|PhD pdf (in french)]]+]
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[+[[http://www-rocq.inria.fr/~ajoly/ajoly_thesis.pdf|PhD pdf (in french)]]+]
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! My PhD Thesis: [+[[http://www-rocq.inria.fr/~ajoly/ajoly_thesis.pdf|PhD pdf (in french)]]+]
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! French television detection results [[#INAresults]] ([[[Main.MyPhdResearchActivitiesAtINA.results|Other Results]]) [[#lab4]]
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! French television detection results ([[[Main.MyPhdResearchActivitiesAtINA.results|Other Results]]) [[#lab4]]
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[[#INAresults]]
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! French television detection results ([[[Main.MyPhdResearchActivitiesAtINA.results|Other Results]]) [[#lab4]]
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! French television detection results [[#INAresults]] ([[[Main.MyPhdResearchActivitiesAtINA.results|Other Results]]) [[#lab4]]
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%red% [+Under Construction!!+]
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! French television detection results [[#INAresults]] ([[[Main.MyPhdResearchActivitiesAtINA.results|Other Results]]) [[#lab4]]
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! French television detection results ([[[Main.MyPhdResearchActivitiesAtINA.results|Other Results]]) [[#lab4]]
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! French television detection results [[#INAresults]] ([[[Main.MyPhdResearchActivitiesAtINA.results|Other Results]]]) [[#lab4]]
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! French television detection results [[#INAresults]] ([[[Main.MyPhdResearchActivitiesAtINA.results|Other Results]]) [[#lab4]]
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! French television detection results ([[[Main.MyPhdResearchActivitiesAtINA.results|Other Results]]]) [[#lab4]]
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! French television detection results [[#INAresults]] ([[[Main.MyPhdResearchActivitiesAtINA.results|Other Results]]]) [[#lab4]]
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[[#lab1|What's a copy ?]]
[[#lab2|Content-based video copy detection framework]]
[[#lab3|Distortion-based similarity search]]
[[#INAsyst|INA television monitoring system]]
[[#lab4|French television detection results]] 
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[[#lab1|What's a copy ?]]\\
[[#lab2|Content-based video copy detection framework]]\\
[[#lab3|Distortion-based similarity search]]\\
[[#INAsyst|INA television monitoring system]]\\
[[#lab4|French television detection results]]\\
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Content-based video copy detection framework
Distortion-based similarity search

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[[#lab2|Content-based video copy detection framework]]
[[#lab3|
Distortion-based similarity search]]
[[#INAsyst|INA television monitoring system]]
[[#lab4|French television detection results]]

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! Content-based video copy detection framework [[#2]]
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! Content-based video copy detection framework [[#lab2]]
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! Distortion-based similarity search [[#3]]
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! Distortion-based similarity search [[#lab3]]
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! French television detection results ([[[Main.MyPhdResearchActivitiesAtINA.results|Other Results]]])
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! French television detection results ([[[Main.MyPhdResearchActivitiesAtINA.results|Other Results]]]) [[#lab4]]
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[[lab1|What's a copy ?]]
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[[#lab1|What's a copy ?]]
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[[#1|What's a copy ?]]
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[[lab1|What's a copy ?]]
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! What's a copy ? [[#1]]
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! What's a copy ? [[#lab1]]
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! What's a copy ?


! What's a
copy ?
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[[#1|What's a copy ?]]
Content-based video
copy detection framework
Distortion-based similarity search


! What's a copy
? [[#1]]
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! Content-based video copy detection framework
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! Content-based video copy detection framework [[#2]]
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! Distortion-based similarity search
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! Distortion-based similarity search [[#3]]
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! French television detection results
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! French television detection results ([[[Main.MyPhdResearchActivitiesAtINA.results|Other Results]]])
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[+[[Main.MyPhdResearchActivitiesAtINA.results|OTHER RESULTS]]+]
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[+[[Main.MyPhdResearchActivitiesAtINA.results|OTHER RESULTS]]+]
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! INA television monitoring system [#INAsyst]
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! INA television monitoring system [[#INAsyst]]
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! INA television monitoring system
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! INA television monitoring system [#INAsyst]
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! What's a copy ?
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The system is robust to most of the pre-production and post-production process  that distort the images.
 
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Only one single standard PC is able to monitor continuously a TV channel faced to a reference database containing 50,000 hours of video (about 3 billions 20-dimensional vectors). This system is currently used at the french national audiovisual institute ([[http://www.ina.fr/|INA]]) to monitor ten channels with various large archives databases.
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%center% %width=600% http://www-rocq.inria.fr/~ajoly/images/architecture.jpg
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%center% %width=400% http://www-rocq.inria.fr/~ajoly/images/architecture.jpg
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! INA television monitoring system
%center% %width=600% http://www-rocq.inria.fr/~ajoly/images/architecture.jpg

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A system based on this technology is running at the french .

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A system based on this technology is running at the french .

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[[http://www-rocq.inria.fr/~ajoly/ajoly_thesis.pdf|PhD pdf (in french!!)]]
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[+[[http://www-rocq.inria.fr/~ajoly/ajoly_thesis.pdf|PhD pdf (in french)]]+]
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[[ |Download PhD (in french!!)]]
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[[http://www-rocq.inria.fr/~ajoly/ajoly_thesis.pdf|PhD pdf (in french!!)]]
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[[ |Download PhD (in french!!)]]

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%center% Int_Valpha(p_'''DS'''('''X''' - '''Q''')'''dX''') = alpha
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%center% Int_Valpha(p_'''DS'''('''X''' - '''Q''') '''dX''') = alpha
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We define a ''distortion-based probabilistic query'', associated to a probability equal to $\alpha$, as the search of all the signatures contained in a region V_alpha of the feature space satisfying:

%center% integral V_alpha p_'''DS'''('''X''' - '''Q''')'''dX''' = alpha
to:
We define a ''distortion-based probabilistic query'', associated to a probability equal to ''alpha'', as the search of all the signatures contained in a region ''Valpha'' of the feature space satisfying:

%center% Int_Valpha(p_'''DS'''('''X''' - '''Q''')'''dX''') = alpha
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'''DS''' = '''S'''(M) - '''S'''(t(M))
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%center% '''DS''' = '''S'''(M) - '''S'''(t(M))
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\begin{equation}
integral
V_alpha p_'''DS'''('''X''' - '''Q''')'''dX''' = alpha
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%center% integral V_alpha p_'''DS'''('''X''' - '''Q''')'''dX''' = alpha
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'''DeltaS''' = '''S'''(M) - '''S'''(t(M))

We define a \textit{distortion-based probabilistic query}, associated to a probability equal to $\alpha$, as the search of all the signatures contained in a region $V_{\alpha}$ of the feature space satisfying:
to:
'''DS''' = '''S'''(M) - '''S'''(t(M))

We define a ''distortion-based probabilistic query'', associated to a probability equal to $\alpha$, as the search of all the signatures contained in a region V_alpha of the feature space satisfying:
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integral V_alpha p_'''DeltaS'''('''X''' - '''Q''')'''dX''' = alpha
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integral V_alpha p_'''DS'''('''X''' - '''Q''')'''dX''' = alpha
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'''\Delta S''' = '''S'''(M) - '''S'''(t(M))
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'''DeltaS''' = '''S'''(M) - '''S'''(t(M))

We define a \textit{distortion-based probabilistic query}, associated to a probability equal to $\alpha$, as the search of all the signatures contained in a region $V_{\alpha}$ of the feature space satisfying:
\begin{equation}
integral V_alpha p_'''DeltaS'''('''X''' - '''Q''')'''dX''' = alpha
where '''Q''' is the query (i.e. the candidate signature) and p_'''Delta S'''(.) is the probability density function of the distortion. Intuitively, the probabilistic query selects a region of the feature space such as the probability of finding signatures that could belong to a copy is equal to alpha.

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A signature '''S'''(t(M)), extracted in a transformed document t(M), can be considered as a distorted version of the original signature '''S'''(M), extracted in the original document M. We define the distortion as the following variable: 
'''\Delta S''' = '''S''(M) - '''S'''(t(M))
to:
A signature '''S'''(t(M)), extracted in a transformed document t(M), can be considered as a distorted version of the original signature '''S'''(M), extracted in the original document M. We define the distortion as the following variable:
 
'''\Delta S''' = '''S'''(M) - '''S'''(t(M))
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A signature $\bm{S}\left( t(M) \right)$, extracted in a transformed document $t(M)$, can thus be considered as a distorted version of the original signature $\bm{S}\left( M \right)$, extracted in the original document $M$. We define the distortion as the following variable: 
\[\bm{\Delta S} = \bm{S}\left( M \right) - \bm{S}\left( t(M) \right)\]
to:
A signature '''S'''(t(M)), extracted in a transformed document t(M), can be considered as a distorted version of the original signature '''S'''(M), extracted in the original document M. We define the distortion as the following variable: 
'''\Delta S''' = '''S''(M) - '''S'''(t(M))
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* Local spatio-temporal differential invariants (20-dimensional vectors)\\
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* Local spatio-temporal differential invariants (20-dimensional vectors)
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* Local spatio-temporal differential invariants (20-dimensional vectors)
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* Local spatio-temporal differential invariants (20-dimensional vectors)\\
\\
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A signature $\bm{S}\left( t(M) \right)$, extracted in a transformed document $t(M)$, can thus be considered as a distorted version of the original signature $\bm{S}\left( M \right)$, extracted in the original document $M$. We define the distortion as the following variable: 
\[\bm{\Delta S} = \bm{S}\left( M \right) - \bm{S}\left( t(M) \right)\]

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* Key frame detection based on maxima of motion intensity
* Harris interest points detection
* Local spatio-temporal differential invariants (20-dimensional vectors)
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* [[http://www-rocq.inria.fr/~ajoly/VLDB_HTML/ajolyVLDB_vf/ajolyVLDB_vf.html|html research report]]
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! Video copy detection framework
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! Content-based video copy detection framework
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%center% http://www-rocq.inria.fr/~ajoly/images/images3.jpg
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%center% %width=600% http://www-rocq.inria.fr/~ajoly/images/images3.jpg
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%center% http://www-rocq.inria.fr/~ajoly/images/image3.jpg
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%center% http://www-rocq.inria.fr/~ajoly/images/images3.jpg
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! French television detection results
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! Distortion-based similarity search

! French television detection results
%center% http://www-rocq.inria.fr/~ajoly/images/image3.jpg
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%center% %width=500% http://www-rocq.inria.fr/~ajoly/images/copies_tree.jpg
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%center% %width=500% http://www-rocq.inria.fr/~ajoly/images/copies_tree.jpg | '''copies tree'''
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All the copies of an original document can be represented by a tree where each  node corresponds to a new transformation. This tree represents the historic of a document: where, when and how a document has been used or displayed. This ''context tree'' has a very high information content and its construction is a challenging task.\\
to:
All the copies of an original document can be represented by a tree where each  node corresponds to a new transformation. This ''copies tree'' represents the historic of the use contexts: where, when and how a document has been used or displayed. The ''copies tree'' has a very high information content and its construction is a challenging task.\\
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From the     
to:
All the copies of an original document can be represented by a tree where each  node corresponds to a new transformation. This tree represents the historic of a document: where, when and how a document has been used or displayed. This ''context tree'' has a very high information content and its construction is a challenging task.\\
Note that, watermarking based copy detection techniques do not allow the detection of all copies but only those that have been constructed from the document that contains the invisible mark. Content-based copy detection techniques theoretically allow the detection of all copies even if the original document is very old.
%center% %width=500% http://www-rocq.inria.fr/~ajoly/images/copies_tree.jpg
 
     
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%center% %width=400% http://www-rocq.inria.fr/~ajoly/images/similarities.jpg
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%center% %width=600% http://www-rocq.inria.fr/~ajoly/images/similarities.jpg
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%center% %width=400% http://www-rocq.inria.fr/~ajoly/images/similarities.jpg
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%center% http://www-rocq.inria.fr/~ajoly/images/similarities.jpg
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! What's a copy ?
Contrary to popular belief, a copy is not an identical document or a near replicated document but rather a '''transformed''' document, i.e a document that has been obtained from an '''original''' one by a succession of processes. Thus, a copy is not necessary ''more visually similar'' than other kinds of similar  documents.


From the     

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%center% http://www-rocq.inria.fr/~ajoly/images/framework.jpg
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%center% %width=350% http://www-rocq.inria.fr/~ajoly/images/framework.jpg
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! Video copy detection framework
%center% http://www-rocq.inria.fr/~ajoly/images/framework.jpg

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! Video local signatures extraction
%center% http://www-rocq.inria.fr/~ajoly/images/flux.jpg

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%red% [+Under Construction!!+]
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%red% [+Under Construction!!+]

! French television detection results
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Under Construction !!
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%red% [+Under Construction!!+]
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Under Construction
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Under Construction !!
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Under Construction

Research

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* [[Personal/Photo Page | Photos]]

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