AIRWiki - User contributions [en]

Restoration of blurred objects using cues from the alpha matte

2008-06-18T07:41:57Z

AndreaVilla: Creation of this page

== '''Part 1: project profile''' ==

=== Project name ===

Restoration of blurred objects using cues from the alpha matte

=== Project short description ===

The project aims at the restoration of digital images containing blurred objects. We use natural image matting techniques to separate object and background data, and take advantage of the characteristics of the computed alpha matte to provide an estimation of the blur PSF (Point Spread Function). The image of the blurred object is then restored using the estimated PSF. We validated the proposed technique with both synthetic and real camera images.

=== Dates ===
*Start date: 2007-05-01

*End date: 2008-04-24

=== People involved ===

===== Project advisors =====

*[[User:GiacomoBoracchi|Giacomo Boracchi]]
*Vincenzo Caglioti
*[[User:AlessandroGiusti|Alessandro Giusti]]

===== Students who worked on the project in the past =====

*[[User:AndreaVilla|Andrea Villa]]

== '''Part 2: project description''' ==

We propose a technique for estimating the blur point spread function exploiting the information provided by the alpha matte, when a single image containing a blurred object is available. The alpha matte contains information about the apparent transparency of the blurred object. The main idea consists in estimating the unknown silhouette of the blurred object by thresholding the alpha matte and obtaining then the blur point spread function with the deconvolution between the blurred and the thresholded alpha map. Our approach has been validated with experiments on both synthetic and camera images. On synthetic images, the blur point spread function has been estimated with reasonable accuracy even in presence of additive white noise, while on camera images, the restoration performance using the estimated point spread function encourages further works in this direction.

=== Project documentation ===

[[Media:Avilla_restoration_object_alpha.pdf|Download thesis in pdf format]]

Projects

2008-06-18T07:28:31Z

AndreaVilla: /* Computer Vision and Image Analysis */

''This page is a repository of links to the pages describing the '''projects''' we are currently working on at AIRLab.
See the list of our finished projects on the [[Finished Projects]] page.''

== Ongoing projects ==
''by research area (areas are defined in the [[Main Page]]); for each project a name and a link to its AIRWiki page is given''

==== [[Agents, Multiagent Systems, Agencies]] ====
----

* [[Multiagent cooperation|Multiagent cooperating system]]

* [[Planning in Ambient Intelligence scenarios| Planning in Ambient Intelligence scenarios]]

==== [[BioSignal Analysis]] ====
----
====== [[Affective Computing]] ======

* [[Relatioship between Cognition and Emotion in Rehabilitation Robotics]]
* [[Driving companions]]
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====== [[Brain-Computer Interface]] ======

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====== [[Automatic Detection Of Sleep Stages]] ======

* [[Sleep Staging with HMM]]

====== [[Analysis of the Olfactory Signal]] ======

* [[Lung Cancer Detection by an Electronic Nose]]
* [[HE-KNOWS - An electronic nose]]

==== [[Computer Vision and Image Analysis]] ====
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* [[Automated extraction of laser streaks and range profiles]]

* [[Data collection for mutual calibration|Data collection for laser-rangefinder and camera calibration]]

* [[Image retargeting by k-seam removal]]

* [[Particle filter for object tracking]]

* [[Template based paper like reconstruction when the edges are straight]]

* [[Wii Remote headtracking and active projector]]

* [[Vision module for the Milan Robocup Team]]

* [[Long Exposure Images for Resource-constrained video surveillance]]

* [[NonPhotorealistic rendering of speed lines]].

* [[Restoration of blurred objects using cues from the alpha matte]]

==== [[Machine Learning]] ====
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* [[Adaptive Reinforcement Learning Multiagent Coordination in Real-Time Computer Games|Adaptive Reinforcement Learning Multiagent Coordination in Real-Time Computer Games]]

* [[B-Smart Behaviour Sequence Modeler and Recognition tool|B-Smart Behaviour Sequence Modeler and Recognition tool]]

==== [[Ontologies and Semantic Web]] ====
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* [[JOFS|JOFS, Java Owl File Storage]]
* [[FolksOnt|FolksOnt]]
* [[Extending a wiki with semantic templates]]
* [[GeoOntology|Geographic ontology for a semantic wiki]]

==== [[Philosophy of Artificial Intelligence]] ====
----
==== [[Robotics]] ====
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* [[LURCH - The autonomous wheelchair]]

* [[Rawseeds|RAWSEEDS]]

* [[Balancing robots: Tilty, TiltOne]]

* [[ROBOWII ]]

* [[PoliManus]]

* [[ZOIDBERG - An autonomous bio-inspired RoboFish]]

* [[Styx The 6 Whegs Robot]]

* [[PolyGlove: a body-based haptic interface]]

* [[ULISSE]]

==== [[Soft Computing]] ====
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== Note for students ==

If you are a student and there isn't a '''page describing your project''', this is because YOU have the task of creating it and populating it with (meaningful) content. If you are a student and there IS a page describing your project, you have the task to complete that page with (useful and comprehensive) information about your own contribution to the project. Be aware that the quality of your work (or lack of it) on the AIRWiki will be evaluated by the Teachers and will influence your grades.

Instructions to add a new project or to add content to an existing project page are available at [[Projects - HOWTO]].

File:Avilla restoration object alpha.pdf

2008-06-18T07:25:17Z

AndreaVilla: Restoration of blurred objects using cues from the alpha matte

Restoration of blurred objects using cues from the alpha matte