Rank: 437 based on 258 downloads (last 30 days) and 5 files submitted

Andrea Tagliasacchi

E-mail: ata2@sfu.ca
Company/University: Simon Fraser University
Lat/Long: 49.276592, -122.916756

Personal Profile:

I am a researcher in GrUVi Labs at Simon Fraser University under the supervision of Dr. Richard Zhang.

My main research interest spans the field of geometry processing and particularly shape characterization. When a shape is represented by a point cloud or a polygonal mesh which approximates its surface, a very important problem s the determination of discriminative elements that characterize the shape either locally or globally.

In between the multitude of descriptors available I am mostly interested in curve-skeleton generation and its applications.

Professional Interests:

Digital Geometry Processing

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Files Posted by Andrea				View all 1 - 5 of 5
Updated	File	Tags	Downloads (last 30 days)	Comments	Rating
22 May 2009	Priority Queue (MEX/C++) An efficient priority queue implementation in C++ Author: Andrea Tagliasacchi	priority queue, heap, max heap, data structure, priority	37	2	5.0 5.0 \| 1 rating
08 Dec 2008	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q Author: Andrea Tagliasacchi	utilities, miscellaneous, kdtree_buildcpp, data structure, spatial data structur..., mathematics	107	12	5.0 5.0 \| 5 ratings
11 Sep 2008	gif_add_frame creates a gif animation of snapshots Author: Andrea Tagliasacchi	animation, export, graphics, movie, import, graphics import	37	1	5.0 5.0 \| 1 rating
13 May 2008	Arcball like 3D figure rotation Example that shows how to add arcball control to a 3D window Author: Andrea Tagliasacchi	arcball, gui tools, viewpoint, mesh, example, 3d	44	4	5.0 5.0 \| 1 rating
03 Mar 2008	Makefile like script Conditionally compile all "./util/*.cpp" MEX files Author: Andrea Tagliasacchi	makefile make compile...	33	0

Comments and Ratings by Andrea		View all 1 - 5 of 8
Updated	File	Comments	Rating
07 Jul 2009	Priority Queue (MEX/C++) An efficient priority queue implementation in C++ Author: Andrea Tagliasacchi	1) The C++ library MyHeap.h contains both implementation for MaxHeap and MinHeaps. All you need is to create interface functions along the lines of those I created for the MinHeaps. 2) This would require to add a function in MyHeaps.h but I don't see why not, it should be a very easy operation to do. 3) Position in the tree? Lowest Level?
22 May 2009	Queue (A simple implementation) Author: Dimitri Shvorob	Good choice for object oriented. However, if you want a generic priority queue which don't assume elements to be Matlab objects refer to my submission.
22 May 2009	Queue (A simple implementation) Author: Dimitri Shvorob
15 May 2009	Queue (A simple implementation) Author: Dimitri Shvorob	I wish you implemented a fast queue for matlab, not an object oriented one...
30 Mar 2009	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q Author: Andrea Tagliasacchi	kdtree_build() returns a pointer to the kdtree. That number needs to be fed as first argument to every other query method. I haven't tried it on older versions of Matlab but I haven't used any of the new releases functionality.

Comments and Ratings on Andrea's Files			View all 1 - 5 of 19
Updated	File	Comment by	Comments	Rating
26 Oct 2009	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q Author: Andrea Tagliasacchi	Dominic	Ok, Shame on me, there is a method "kdtree_delete" that needs to be called for releasing the memory again.
22 Oct 2009	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q Author: Andrea Tagliasacchi	Dominic	On my System (64bit Ubuntu, Matlab R2009a) there seems to be a memory leak with this implementation: for i = 1:1000 tree = kdtree_build(rand(1000,1)); end grabs around 140MB of system memory, according to top. That is never released again. Do I have to release the resources myself in some way or might this be a bug? I really depend on this implementation, so you would do me a great favour by having a look at it...
15 Oct 2009	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q Author: Andrea Tagliasacchi	Dominic	Thanks a lot for this contribution - I've been using it a lot recently and it just works perfectly :)
09 Sep 2009	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q Author: Andrea Tagliasacchi	jin, sun	kdtree_build.cpp D:\kdtree1.2\kdtree\KDTree.h(144) : error C2374: 'dIdx' : redefinition; multiple initialization D:\kdtree1.2\kdtree\KDTree.h(137) : see declaration of 'dIdx' D:\kdtree1.2\kdtree\KDTree.h(225) : error C2371: 'i' : redefinition; different basic types D:\kdtree1.2\kdtree\KDTree.h(223) : see declaration of 'i' D:\MATLAB\R2008A\BIN\MEX.PL: Error: Compile of 'kdtree_build.cpp' failed. ??? Error using ==> mex at 207 Unable to complete successfully.
27 Aug 2009	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q Author: Andrea Tagliasacchi	ming, lin	great work! note: compile with visual c++ 6.0 will cause fatal error on my computer. However, VS2008 works fine.

Top Tags Applied by Andrea	1 - 5 of 27
data structure, utilities, 3d, animation, arcball

Files Tagged by Andrea				View all 1 - 5 of 5
Updated	File	Tags	Downloads (last 30 days)	Comments	Rating
22 May 2009	Priority Queue (MEX/C++) An efficient priority queue implementation in C++ Author: Andrea Tagliasacchi	priority queue, heap, max heap, data structure, priority	37	2	5.0 5.0 \| 1 rating
08 Dec 2008	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q Author: Andrea Tagliasacchi	utilities, miscellaneous, kdtree_buildcpp, data structure, spatial data structur..., mathematics	107	12	5.0 5.0 \| 5 ratings
11 Sep 2008	gif_add_frame creates a gif animation of snapshots Author: Andrea Tagliasacchi	animation, export, graphics, movie, import, graphics import	37	1	5.0 5.0 \| 1 rating
13 May 2008	Arcball like 3D figure rotation Example that shows how to add arcball control to a 3D window Author: Andrea Tagliasacchi	arcball, gui tools, viewpoint, mesh, example, 3d	44	4	5.0 5.0 \| 1 rating
03 Mar 2008	Makefile like script Conditionally compile all "./util/*.cpp" MEX files Author: Andrea Tagliasacchi	makefile make compile...	33	0

Currently Watching
Type	Description
File	Priority Queue (MEX/C++)
File	kd-tree for matlab
File	gif_add_frame
File	Arcball like 3D figure rotation
File	Makefile like script

Files Matching Andrea's Watch List				View all 1 - 5 of 5
Updated	File	Tags	Downloads (last 30 days)	Comments	Rating
22 May 2009	Priority Queue (MEX/C++) An efficient priority queue implementation in C++ Author: Andrea Tagliasacchi	priority queue, heap, max heap, data structure, priority	37	2	5.0 5.0 \| 1 rating
08 Dec 2008	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q Author: Andrea Tagliasacchi	utilities, miscellaneous, kdtree_buildcpp, data structure, spatial data structur..., mathematics	107	12	5.0 5.0 \| 5 ratings
11 Sep 2008	gif_add_frame creates a gif animation of snapshots Author: Andrea Tagliasacchi	animation, export, graphics, movie, import, graphics import	37	1	5.0 5.0 \| 1 rating
13 May 2008	Arcball like 3D figure rotation Example that shows how to add arcball control to a 3D window Author: Andrea Tagliasacchi	arcball, gui tools, viewpoint, mesh, example, 3d	44	4	5.0 5.0 \| 1 rating
03 Mar 2008	Makefile like script Conditionally compile all "./util/*.cpp" MEX files Author: Andrea Tagliasacchi	makefile make compile...	33	0

Comments and Ratings Matching Andrea's Watch List			1-5 of 19
Date	File	Comment by	Comments	Rating
26 Oct 2009	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q	Dominic	Ok, Shame on me, there is a method "kdtree_delete" that needs to be called for releasing the memory again.	Comment only
22 Oct 2009	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q	Dominic	On my System (64bit Ubuntu, Matlab R2009a) there seems to be a memory leak with this implementation: for i = 1:1000 tree = kdtree_build(rand(1000,1)); end grabs around 140MB of system memory, according to top. That is never released again. Do I have to release the resources myself in some way or might this be a bug? I really depend on this implementation, so you would do me a great favour by having a look at it...	Comment only
15 Oct 2009	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q	Dominic	Thanks a lot for this contribution - I've been using it a lot recently and it just works perfectly :)	5
09 Sep 2009	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q	sun jin	kdtree_build.cpp D:\kdtree1.2\kdtree\KDTree.h(144) : error C2374: 'dIdx' : redefinition; multiple initialization D:\kdtree1.2\kdtree\KDTree.h(137) : see declaration of 'dIdx' D:\kdtree1.2\kdtree\KDTree.h(225) : error C2371: 'i' : redefinition; different basic types D:\kdtree1.2\kdtree\KDTree.h(223) : see declaration of 'i' D:\MATLAB\R2008A\BIN\MEX.PL: Error: Compile of 'kdtree_build.cpp' failed. ??? Error using ==> mex at 207 Unable to complete successfully.	Comment only
27 Aug 2009	kd-tree for matlab A kd-tree mex implementation which allows for nearest neighbor, k-nearest neighbor, range and ball q	lin ming	great work! note: compile with visual c++ 6.0 will cause fatal error on my computer. However, VS2008 works fine.	5

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