[BIC-announce] Fwd: Seminar: Prof. Laurent Cohen - Tuesday Sept. 1, 11am to 12noon in McConnell Engineering Room 437

[Christine Dudek]

Dear all,

The talk by Prof. Cohen will take place on Tuesday Sept. 1, 11am to 12noon in McConnell Engineering Room 437. 

Best,

Krys


Krys (Christine) Dudek | Program Administrator, NSERC CREATE Program for Medical Image Analysis (CREATE-MIA) | Centre for Intelligent Machines | McGill University | McConnell Engineering, Room 410 | 3480 University Street | Montreal, QC H3A 0E9 | Tel: 514-398-6319 | cim.mcgill.ca/create-mia

Begin forwarded message:

> From: Christine Dudek <kdudek at cim.mcgill.ca>
> Subject: Seminar: Prof. Laurent Cohen - Tuesday Sept. 1, 11am to 12noon in McConnell Engineering Room 437
> Date: August 28, 2015 at 9:52:40 AM GMT-4
> To: bic-announce at bic.mni.mcgill.ca
> 
> Dear all,
> 
> This announcement is being sent on behalf of Prof. Kaleem Siddiqi (McGill School of Computer Science & Centre for Intelligent Machines).
> 
> All are invited to attend.
> 
> Best,
> 
> Krys
> 
> Krys (Christine) Dudek | Program Administrator, NSERC CREATE Program for Medical Image Analysis (CREATE-MIA) | Centre for Intelligent Machines | McGill University | McConnell Engineering, Room 410 | 3480 University Street | Montreal, QC H3A 0E9 | Tel: 514-398-6319 | cim.mcgill.ca/create-mia
> 
> -----------------------------------------------------------------------------------
> Segmentation of biomedical images using geodesic methods
> Laurent D. COHEN
> CEREMADE, UMR cNRS 7534, University Paris Dauphine, France
> Place du Marechal de Lattre de Tassigny, 75016 Paris, France
> cohen at ceremade.dauphine.fr
> http://www.ceremade.dauphine.fr/~cohen
> 
> Tubular and tree structures appear very commonly in biomedical images like vessels, microtubules
> or neuron cells. Minimal paths have been used for long as an interactive tool to segment these
> structures as cost minimizing curves. The user usually provides start and end points on the image
> and gets the minimal path as output. These minimal paths correspond to minimal geodesics
> according to some adapted metric. They are a way to find a (set of) curve(s) globally minimizing the
> geodesic active contours energy. Finding a geodesic distance can be solved by the Eikonal equation
> using the fast and efficient Fast Marching method. Different metrics can be adapted to various
> problems. In the past years we have introduced different extensions of these minimal paths that
> improve either the interactive aspects or the results. For example, the metric can take into account
> both scale and orientation of the path. This leads to solving an anisotropic minimal path in a 2D or
> 3D+radius space. On a different level, the user interaction can be minimized by adding iteratively
> what we called the keypoints, for example to obtain a closed curve from a single initial point. The
> result is then a set of minimal paths between pairs of keypoints. This can also be applied to
> branching structures in both 2D and 3D images.
> Geodesic Voting consists in computing geodesics between a given source point and a set of points
> scattered in the image. The geodesic density is defined at each pixel of the image as the number of
> geodesics that pass over this pixel. The target structure corresponds to image points with a high
> geodesic density. We will illustrate different possible applications of this approach.
> 
> In this talk we will present recent methods based on geodesics for biomedical applications, like
> automatic segmentation of vascular tree in retinal images.
> 
> -------------------------------------------------------------------
> Laurent Cohen
> Directeur de Recherche
> CEREMADE, UMR CNRS 7534, Universite  Paris Dauphine PSL*
> Place du Marechal de Lattre de Tassigny
> 75775 Paris cedex 16, France
> Tel. (33-1) 44 05 46 78 Fax (33-1) 44 05 45 99
> mailto:Cohen at ceremade.dauphine.fr
> Home Page: http://www.ceremade.dauphine.fr/~cohen
> 

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