Results 71 to 80 of about 5,849,321 (239)

Camouflage Using Surface Disruption: The Importance of Corners Versus Edges

open access: yesEcology and Evolution
Disruptive colouration is a common mode of camouflage used by predators and prey to conceal their body contours. However, it is unclear how disruptive colouration hinders the detection and recognition of three‐dimensional (3D) body shapes.
Ruby McLellan   +3 more
doaj   +1 more source

New Proposed Fusion between DCT for Feature Extraction and NSVC for Face Classification

open access: yesCybernetics and Information Technologies, 2018
Feature extraction is an interactive and iterative analysis process of a large dataset of raw data in order to extract meaningful knowledge. In this article, we present a strong descriptor based on the Discrete Cosine Transform (DCT), we show that the ...
Nassih B.   +3 more
doaj   +1 more source

Deep-Learning-Guided Point Cloud Modeling with Applications in Intelligent Manufacturing

open access: yesApplied Bionics and Biomechanics, 2022
Machining feature recognition is a key technology to realize CAD/CAPP/CAM system integration. Aiming at high robustness of traditional processing feature recognition in image reasoning, an automatic processing shape recognition method based on fuzzy ...
Guifeng Wang   +2 more
doaj   +1 more source

Convex Cardinal Shape Composition

open access: yes, 2015
We propose a new shape-based modeling technique for applications in imaging problems. Given a collection of shape priors (a shape dictionary), we define our problem as choosing the right dictionary elements and geometrically composing them through basic ...
Aghasi, Alireza, Romberg, Justin
core   +1 more source

Visual encoding of partial unknown shape boundaries

open access: yesAIMS Neuroscience, 2018
Prior research has found that known shapes and letters can be recognized from a sparse sampling of dots that mark locations on their boundaries. Further, unknown shapes that are displayed only once can be identified by a matching protocol, and here also,
Hannah Nordberg   +2 more
doaj   +1 more source

Evaluating the contribution of shape attributes to recognition using the minimal transient discrete cue protocol

open access: yesBehavioral and Brain Functions, 2012
Subjects were tested for their ability to identify objects that were represented by an array of dots that marked the major contours, usually only the outer boundary.
Greene Ernest, Ogden R
doaj   +1 more source

Leaf Shape Recognition using Centroid Contour Distance

open access: yes, 2016
This research recognizes the leaf shape using Centroid Contour Distance (CCD) as shape descriptor. CCD is an algorithm of shape representation contour-based approach which only exploits boundary information.
A. Hasim, Y. Herdiyeni, S. Douady
semanticscholar   +1 more source

An Effective 3D Shape Descriptor for Object Recognition with RGB-D Sensors

open access: yesSensors, 2017
RGB-D sensors have been widely used in various areas of computer vision and graphics. A good descriptor will effectively improve the performance of operation.
Zhong Liu   +3 more
doaj   +1 more source

Predicting variation of DNA shape preferences in protein-DNA interaction in cancer cells with a new biophysical model

open access: yes, 2017
DNA shape readout is an important mechanism of target site recognition by transcription factors, in addition to the sequence readout. Several models of transcription factor-DNA binding which consider DNA shape have been developed in recent years.
Batmanov, Kirill, Wang, Junbai
core   +2 more sources

The Analysis of Shape Features for the Purpose of Exercise Types Classification Using Silhouette Sequences

open access: yesApplied Sciences, 2020
This paper presents the idea of using simple shape features for action recognition based on binary silhouettes. Shape features are analysed as they change over time within an action sequence.
Katarzyna Gościewska   +1 more
doaj   +1 more source

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