scholarly journals Stereo viewing modulates three-dimensional shape processing during object recognition: A high-density ERP study.

2018 ◽  
Vol 44 (4) ◽  
pp. 518-534 ◽  
Author(s):  
Zoe J. Oliver ◽  
Filipe Cristino ◽  
Mark V. Roberts ◽  
Alan J. Pegna ◽  
E. Charles Leek
Keyword(s):  
Object Recognition ◽  
Three Dimensional ◽  
High Density ◽  
Shape Processing ◽  
Dimensional Shape ◽  
Three Dimensional Shape

Surface but not volumetric part structure mediates three-dimensional shape representation: Evidence from part–whole priming

2009 ◽  
Vol 62 (4) ◽  
pp. 814-830 ◽  
Author(s):  
E. Charles Leek ◽  
Irene Reppa ◽  
Elly Rodriguez ◽  
Martin Arguin
Keyword(s):  
Object Recognition ◽  
Shape Representation ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Structural Description ◽  
Novel Objects ◽  
Dimensional Shape ◽  
Part Structure ◽  
Unseen Objects ◽  
Three Dimensional Shape

The decomposition of three-dimensional (3-D) objects into shape primitives consisting of geometric volumes is a key proposal of some theories of object recognition. It implicitly assumes that recognition involves volumetric completion—the derivation of a three-dimensional structure that comprises inferred shape properties, such as surfaces, that are not directly visible due to self-occlusion. The goal of this study was to test this claim. In Experiment 1 participants memorized novel objects and then discriminated these from previously unseen objects. Targets were preceded by primes containing a subset of object surfaces that either matched those visible in the whole objects or that could only be inferred through volumetric completion. The results showed performance benefits through priming from visible surfaces but not from inferred surfaces. In Experiment 2, we found equivalent priming for part-primes containing two visible surfaces from the same volumetric part and for primes containing one surface from each of two volumes. These results challenge the view that 3-D object recognition is mediated by shape primitives comprising geometric volumes. Instead, the results support an alternative model that proposes that 3-D shapes are represented as a non-volumetric surface-based structural description.

Forming Shape of Narrow Groove Machined by Electro Jet Machining

2011 ◽  
Vol 411 ◽  
pp. 349-353
Author(s):  
Xiao Xia Li ◽  
Fu Yuan Li ◽  
Qiao Lin Zhang
Keyword(s):  
Three Dimensional ◽  
Groove Depth ◽  
Groove Width ◽  
Micro Channel ◽  
Construction Process ◽  
Cycle Number ◽  
Cycle Times ◽  
Shape Processing ◽  
Dimensional Shape ◽  
Three Dimensional Shape

In order to study small size three dimensional shape processing of electro jet machining, the micro-channel principle is introduced firstly. Moreover, narrow groove processing experiment design and construction process is described, and experimental purpose is to change the cycle times to research the rule of groove width and depth. The experimental results indicate that when the width of the groove reaches a certain value, it will be stabilized and fluctuate around the value. However, with the increasing of the cycle number, groove depth increases. If cycle times are less than 7, the overall shape of the groove is a part of an approximate ellipse, otherwise it is changed but the bottom shape of the groove is still a part of an approximate ellipse.

Four Dimensions of Diamond T: Combination Trade Marks of Colours And Shapes

2006 ◽  
Vol 37 (4) ◽  
pp. 583
Author(s):  
Michael McGowan
Keyword(s):  
Three Dimensional ◽  
Trade Mark ◽  
Fourth Dimension ◽  
Trade Marks ◽  
Four Dimensions ◽  
Trade Mark Law ◽  
Dimensional Shape ◽  
Three Dimensional Shape

This article examines the relatively new fields of colour and shape trade marks. It was initially feared by some academics that the new marks would encroach on the realms of patent and copyright.  However, the traditional requirements of trade mark law, such as functionality and descriptiveness, have meant that trade marks in colour and shape are extremely hard to acquire if they do not have factual distinctiveness. As colour and shape trade marks have no special restrictions, it is proposed that the combination trade mark theory and analysis from the Diamond T case should be used as a way to make them more accessible. The combination analysis can be easily applied because every product has a three dimensional shape and a fourth dimension of colour.

Acoustic Analysis of Detailed Three-Dimensional Shape of the Human Nasal Cavity and Paranasal Sinuses

2017 ◽  
Author(s):  
Tatsuya Kitamura ◽  
Hironori Takemoto ◽  
Hisanori Makinae ◽  
Tetsutaro Yamaguchi ◽  
Kotaro Maki
Keyword(s):  
Nasal Cavity ◽  
Paranasal Sinuses ◽  
Acoustic Analysis ◽  
Three Dimensional ◽  
Dimensional Shape ◽  
Three Dimensional Shape
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