Color-Assisted Local Feature Pipeline for Three-Dimensional Object Retrieval

2019 ◽  
Author(s):  
Yang Lei ◽  
Jian Fan ◽  
Jerry Liu
Keyword(s):  
Three Dimensional ◽  
Local Feature ◽  
Object Retrieval ◽  
Dimensional Object

PTK: A novel depth buffer-based shape descriptor for three-dimensional object retrieval

2006 ◽  
Vol 23 (1) ◽  
pp. 5-14 ◽  
Author(s):  
Geogios Passalis ◽  
Theoharis Theoharis ◽  
Ioannis A. Kakadiaris
Keyword(s):  
Three Dimensional ◽  
Shape Descriptor ◽  
Object Retrieval ◽  
Depth Buffer ◽  
Dimensional Object

Attention and Depth Perception

Perception ◽  
1986 ◽  
Vol 15 (5) ◽  
pp. 563-572 ◽  
Author(s):  
Nobuo Kawabata
Keyword(s):  
Depth Perception ◽  
Necker Cube ◽  
Line Drawing ◽  
Three Dimensional ◽  
Local Features ◽  
Local Feature ◽  
Two Dimensional ◽  
Front Part ◽  
Global Features ◽  
Dimensional Object

The Necker cube is a line drawing with two possible solutions in depth perception. The process of interpreting a two-dimensional line drawing as a three-dimensional object was investigated using the Necker cube. Attention was directed to a local feature of a briefly presented cube, ie an angle at a vertex. The attended angle was perceived as a front part of the cube and other parts were interpreted so as to match this interpretation. Results show that the local feature to which attention was directed was interpreted first and then global features and other local features were interpreted so as to agree with the local feature interpreted initially. This suggests that the three-dimensional interpretation of the line drawing was made sequentially from the local feature to global structures.

Reconstruction of Objects from their Projections Using Orthogonal Functions

1973 ◽  
Vol 31 ◽  
pp. 268-269
Author(s):  
Elrnar Zeitler
Keyword(s):  
Unit Area ◽  
Three Dimensional ◽  
One Dimension ◽  
Spatial Density ◽  
Dimensional Representation ◽  
Orthogonal Functions ◽  
Object A ◽  
Plane Normal ◽  
Dimensional Object ◽  
Spatial Density Distribution

Considering any finite three-dimensional object, a “projection” is here defined as a two-dimensional representation of the object's mass per unit area on a plane normal to a given projection axis, here taken as they-axis. Since the object can be seen as being built from parallel, thin slices, the relation between object structure and its projection can be reduced by one dimension. It is assumed that an electron microscope equipped with a tilting stage records the projectionWhere the object has a spatial density distribution p(r,ϕ) within a limiting radius taken to be unity, and the stage is tilted by an angle 9 with respect to the x-axis of the recording plane.

Sign in / Sign up

Export Citation Format

Share Document