'Shape contexts' diaporamas de présentation

Shape Context and Chamfer Matching in Cluttered Scenes

694 views • 44 slides

Alignment and Matching

Alignment and Matching. Thomas Funkhouser and Michael Kazhdan Princeton University. Translation. Scale. Rotation. Challenge. The shape of model does not change when the model is translated, scaled, or rotated. =. Outline. Matching Alignment Exhaustive Search Invariance Normalization

555 views • 41 slides

Outline

Shape Matching and Object Recognition using Shape Contexts Jitendra Malik U.C. Berkeley (joint work with S. Belongie, J. Puzicha, G. Mori). Outline. Shape matching and isolated object recognition Scaling up to general object recognition. Biological Shape.

383 views • 38 slides

Matching Shapes Serge Belongie, Jitendra Malik and Jan Puzicha U.C. Berkeley

Matching Shapes Serge Belongie, Jitendra Malik and Jan Puzicha U.C. Berkeley. Silhouettes. Single, closed bounding contour No holes Dual of Medial Axis Transform. Point Sets. Sampled points from edges or other feature detector sparse or dense

343 views • 34 slides

Object Recognition Using Locality-Sensitive Hashing of Shape Contexts

Object Recognition Using Locality-Sensitive Hashing of Shape Contexts. Andrea Frome , Jitendra Malik Presented by Ilias Apostolopoulos. Introduction. Object Recognition Calculate features from query image Compare with features from reference images

281 views • 28 slides

Biological Shape

312 views • 24 slides

Biological Shape

242 views • 24 slides

Semantic Geometric Features: A Preliminary Investigation of Automobile Identification

Semantic Geometric Features: A Preliminary Investigation of Automobile Identification. Carl E. Abrams Sung-Hyuk Cha, Michael Gargano, and Charles Tappert. Agenda. Overview of the Problem The Experiments Results Going Forward. Overview. Object recognition remains a hard problem

233 views • 16 slides

Recognizing Objects in Adversarial Clutter: Breaking a Visual CAPTCHA

Recognizing Objects in Adversarial Clutter: Breaking a Visual CAPTCHA. Greg Mori and Jitendra Malik. Outline. What is a CAPTCHA? Why are they good datasets for object recognition? Our recognition framework Results on EZ-Gimpy and Gimpy. What is a CAPTCHA?.

273 views • 16 slides