http://www.gold.ac.uk/calendar/?id=9936
next Whitehead seminar with visiting guest Dr. Anne Verroust-Blondet
from INRIA, Paris, France.
Next week, exceptionally, Tuesday May 24th, 2pm-3pm, in the RHB
Goldsmiths-Curzon Cinema, London - (next to the cafe’) - details below;
please share, invite colleagues and friends; free and open to all
interested.
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"Sketch-based 3D model retrieval using visual part shape
description and view selection"
by
Dr. Anne Verroust-Blondet from INRIA, Paris, France
(work done in collaboration with Zahraa Yasseen and Ahmad Nasri)
Abstract:
Hand drawings are the imprints of shapes in human's mind. How a
human expresses a shape is a consequence of how he or she visualizes
it. A query-by-sketch 3D object retrieval application is closely
tied to this concept from two aspects. First, describing sketches
must involve elements in a figure that matter most to a human.
Second, the representative 2D projection of the target 3D objects
must be limited to "the canonical views" from a human cognition
perspective. We advocate for these two rules by presenting a new
approach for sketch-based 3D object retrieval that describes a 2D
shape by the visual protruding parts of its silhouette. Furthermore,
we present a list of candidate 2D projections that represent the
canonical views of a 3D object.
The general rule is that humans would visually avoid part occlusion
and symmetry. We quantify the extent of part occlusion of the
projected silhouettes of 3D objects by skeletal length computations.
Sorting the projected views in the decreasing order of skeletal
lengths gives access to a subset of best representative views.
We experimentally show how views that cause misinterpretation and
mismatching can be detected according to the part occlusion
criteria. We also propose criteria for locating side, off axis, or
asymmetric views.
Short Bio:
Anne Verroust-Blondet is a senior research scientist in the RITS
research group of Inria Paris, France. She obtained her "Thèse de 3e
cycle" and her "Thèse d'Etat" in Computer Science (respectively in
database theory and in computer graphics) from the University of
Paris-Sud. Her current research interests include 2D and 3D visual
information retrieval, object recognition, 2D and 3D geometric
modeling and perception problems in the context of intelligent
transportation systems.
References:
https://who.rocq.inria.fr/Anne.Verroust/
Whitehead Lectures in Cognition, Computation and Culture
http://www.gold.ac.uk/cccc/whitehead/
http://www.gold.ac.uk/calendar/?id=9936--
Frederic Fol Leymarie
www.folleymarie.com