Analysis of semantic features in free-form objects reconstruction

2015 ◽  
Vol 30 (1) ◽  
pp. 44-63
Author(s):  
Milan Trifunovic ◽  
Milos Stojkovic ◽  
Miroslav Trajanovic ◽  
Miodrag Manic ◽  
Dragan Misic ◽  
...  
Keyword(s):  
Semantic Interpretation ◽  
Free Form ◽  
Geometric Features ◽  
Semantic Features ◽  
Semantic Model ◽  
Bone Implant ◽  
Digital Reconstruction ◽  
The Right ◽  
Object Features ◽  
Geometric Elements

AbstractOne of the biggest challenges associated with design and digital reconstruction of free forms comes from uniqueness and unrepeatability of these shapes. During digital reconstruction of these forms, the designer has to choose the right set of geometric features and then compose them in a way that will enable the most accurate reconstruction of the geometry. While doing this, the designer primarily relies on personal experience gained through work with free-form objects of similar geometry. In our opinion, the analysis of free-form objects geometry should rely upon semantic interpretation of their geometric and other features, and the greatest challenge of automation of digital reconstruction and free-form object design in general is closely related to automation of semantic interpretation of geometric and other free-form object features. In this paper, a case of chest bone implant digital reconstruction is presented, where a new semantic model called the active semantic model was used for modeling the meaning of geometric elements, that is, the semantic features of a free-form object. The active semantic model and its analogy-based reasoning algorithms have shown themselves as applicable for the automation of semantic interpretation of the unique, unrepeatable, and unpredictable forms of chest bone. Moreover, this semantic model showed the potential to help automate selecting and composing of geometric features for efficient digital reconstruction of the geometry of free forms.

scholarly journals Semantic of the form in rock-music: art-pedagogical aspect (on example of hardand-heavy)

2019 ◽  
Vol 66 (3) ◽  
pp. 42-47
Author(s):  
Larysa Vasylieva
Keyword(s):  
Instrumental Music ◽  
Rock Music ◽  
Semantic Analysis ◽  
Structural Model ◽  
Integrated Approach ◽  
Structural Features ◽  
Semantic Interpretation ◽  
Musical Composition ◽  
Semantic Features ◽  
Semantic Model

Purpose of Article - description of the semantic features of the hard-and-heavy musical composition in artistic and pedagogical aspects - the following tasks are specifically applied: individual perspectives of the study of semantics in rock music; need an organization theme), describe the structure and semantic model of hard and heavy compositions. Methodology relies on an integrated approach with the use of system-structural, functional and comparative methods, which allows to explore the characteristics of musical composition's semantics in hardand-heavy at the intonational-thematic, genre, compositional levels. Scientific novelty consists in describing the models of the structural and semantic organization of hard-and-heavy compositions on the basis of a study of the processes of shaping, thematic and structural organization. Hard-and-heavy uses various types of forms - from simple to complex, mirror-symmetric, open, alternative, which are based on one of the three types of thematic organization: monoriff, polyriff, spiral. Structural models of hard-and-heavy musical forms emerge based on the interaction of genre features of vocal and instrumental music. Each structural model corresponds to a generalized semantic model with a specific range of values. The guiding lines for semantic interpretation are representations of typical forms. The semantic model of a typical hardand-heavy composition has several particular models that play the role of a meaningful scenario, define the functional and dynamic profile of the piece, and create the semantic field of this form. Semantic analysis of the rock-piece`s form, as a component of the operational level of artistic and pedagogical analysis, provides an awareness of the joint action of the means of musical expression in their interconnection and conditionality of content. It reveals the structural features of a piece of music, facilitating the process of perception and providing active influence of musical images on the listeners

Automatic Generation of Anisotropic Patterns of Geometric Features for Industrial Design

2015 ◽  
Vol 138 (2) ◽  
Author(s):  
Diego Andrade ◽  
Ved Vyas ◽  
Kenji Shimada
Keyword(s):  
Boundary Conditions ◽  
Computer Aided Design ◽  
Industrial Design ◽  
Automatic Generation ◽  
Free Form ◽  
Geometric Features ◽  
Target Domain ◽  
Metric Tensor ◽  
Target Region ◽  
Free Form Surfaces

While modern computer aided design (CAD) systems currently offer tools for generating simple patterns, such as uniformly spaced rectangular or radial patterns, these tools are limited in several ways: (1) They cannot be applied to free-form geometries used in industrial design, (2) patterning of these features happens within a single working plane and is not applicable to highly curved surfaces, and (3) created features lack anisotropy and spatial variations, such as changes in the size and orientation of geometric features within a given region. In this paper, we introduce a novel approach for creating anisotropic patterns of geometric features on free-form surfaces. Complex patterns are generated automatically, such that they conform to the boundary of any specified target region. Furthermore, user input of a small number of geometric features (called “seed features”) of desired size and orientation in preferred locations could be specified within the target domain. These geometric seed features are then transformed into tensors and used as boundary conditions to generate a Riemannian metric tensor field. A form of Laplace's heat equation is used to produce the field over the target domain, subject to specified boundary conditions. The field represents the anisotropic pattern of geometric features. This procedure is implemented as an add-on for a commercial CAD package to add geometric features to a target region of a three-dimensional model using two set operations: union and subtraction. This method facilitates the creation of a complex pattern of hundreds of geometric features in less than 5 min. All the features are accessible from the CAD system, and if required, they are manipulable individually by the user.

Enumeration of Contact Geometries for Kinematic Registration Using Tactile Sensing Fixtures

2005 ◽  
Vol 128 (1) ◽  
pp. 34-45 ◽  
Author(s):  
Walter W. Nederbragt ◽  
Bahram Ravani
Keyword(s):  
Group Theory ◽  
Data Driven ◽  
Tactile Sensing ◽  
Geometric Features ◽  
Type Synthesis ◽  
Robot Calibration ◽  
Planar Surfaces ◽  
Spherical Surfaces ◽  
Kinematic Registration ◽  
Geometric Elements

This paper uses group theory for enumeration of contacts between geometric elements necessary for kinematic registration or part referencing in robotics. The results are applied to type synthesis of tactile sensing mechanical fixtures. Kinematic registration is an important step in robot calibration and in data driven automation. Although the scope of the paper is limited to geometric contacts involving points, lines, planar surfaces, cylindrical surfaces, and spherical surfaces, the techniques developed are general and can be applied to other geometric features and non-tactile sensing elements used in robotic calibration and part referencing.

scholarly journals LEXICO-SEMANTIC FEATURES OF REPRESENTATION OF ETHNIC TOLERANCE IN MODERN AMERICAN PRESIDENTIAL DISCOURSE

2020 ◽  
Vol 1 (10(78)) ◽  
pp. 75-79
Author(s):  
Viktoriia Kozlova ◽  
Hanna Tarasenko
Keyword(s):  
English Language ◽  
Semantic Features ◽  
Equal Rights ◽  
Interethnic Relations ◽  
Lexical Semantic ◽  
Verbal Representation ◽  
Universal Category ◽  
Presidential Discourse ◽  
The Right ◽  
Negative Connotation

The paper focuses on the investigation of lexical-semantic features of ethnic tolerance representation in modern American presidential discourse. Linguistic studios interpret tolerance as a universal category that forms communication, affects its mechanisms and results. In this paper ethnic tolerance in American presidential discourse is defined as a compliance of the addresser and addressee of the presidential discourse with the ethical model of interethnic relations and popularization of this model that aims at society consolidation. Ethnic tolerance is manifested through an unbiased assessment, acceptance of different worldviews, faiths and cultures, awareness of equal rights and respect for democratic freedoms. The set of semantic components of the concept of tolerance in the English language is distinguished and four lexico-semantic groups representing ethnic tolerance in American presidential discourse: “culture of the alien”, “cooperation”, “attitude to the alien”, “right to independence” are identified. These groups are singled out given the dominance of semantic components of tolerance which denote the object of tolerance, the form of relations with the object of tolerance, the attitude to the object of tolerance and the right of the object of tolerance. The verbal representation of ethnic tolerance in American presidential discourse is characterized by non-categoricity, the use of plural first person pronouns and vocabulary with positive and negative connotation to emphasize positive intentions towards other states and nations. Taking into account the functional and stylistic components, the language means of ethnic tolerance are represented by political, legal and diplomatic terminology. The analysis of the lexico-semantic means that represent ethnic tolerance in modern American presidential discourse makes it possible to identify the basic value of this type of discourse and clarify the main features of the implementation of the ethnic tolerant behaviour.

scholarly journals On the Integrated Descriptions of Metaphorical Sememes of Verbs

2021 ◽  
Vol 5 (1) ◽  
pp. 62-72
Author(s):  
Yuhai Peng
Keyword(s):  
Semantic Interpretation ◽  
Semantic Features ◽  
Semantic Change ◽  
Cognitive Metaphor ◽  
Analysis Pattern ◽  
Verbal Metaphor ◽  
Syntactic Semantics ◽  
Micro Level ◽  
Analysis System ◽  
Formal Feature

Cognitive metaphor is an important way and mechanism of semantic derivation of verbs, the resulting large number of verbal metaphorical sememes has different expressions in their semantic features, formal syntax, communicative structure and even modality and pragmatics. This paper thoroughly and carefully discusses the problem of semantic change of verbal metaphor in terms of the integrated description method of the Moscow Semantic School. Thus, we will create a unique and innovative framework and theoretical model of generalized formal feature analysis, we will also try to introduce formal semantic description and micro-level semantic interpretation into the analysis system of semantic change of the verbal metaphor. Furthermore, we will describe in detail and characterize a number of changes caused by metaphorical semantic change of Russian verbs from the perspective of multi-dimensional integration. This study breaks down the barriers between semantics, cognition, pragmatics and grammar and the traditional analysis pattern of semantic derivation which contributes to significant broadening of the theoretical semantic vision and deepening of the research of cognitive semantics problems of verbal metaphor. It also helps explore innovative analytical methods and strategies for the study of Russian lexical and syntactic semantics.

Head Rotation Influences the Geometric Features of the Stenotic Carotid Bifurcation

2012 ◽  
Author(s):  
Nicolas Aristokleous ◽  
Ioannis Seimenis ◽  
Yannis Papaharilaou ◽  
Eleni Eracleous ◽  
Georgios C. Georgiou ◽  
...  
Keyword(s):  
Healthy Volunteers ◽  
Carotid Arteries ◽  
Head Rotation ◽  
Carotid Bifurcation ◽  
Geometric Features ◽  
Hemodynamic Variables ◽  
Prone Sleeping ◽  
Left And Right ◽  
The Right ◽  
Geometric Changes

Previous investigators have reported that posture changes may influence the geometry and hemodynamics of the carotid bifurcation [1,2]. As a result, head rotation may cause geometric changes that alter the hemodynamic variables previously cited to correlate with the development of atherosclerosis. Glor et al. [1] had reported changes in the right carotid bifurcation geometry with leftward rotation of the head. Aristokleous et al. [2] have reported that geometric differences in the right and left carotid bifurcation occur with a rightward rotation of the head in 10 healthy volunteers [2]. Also, a similar study on bilateral head rotation on the left and right carotid bifurcation of two volunteers has shown similar results [3]. In this study a group of four patients with atherosclerotic disease in the carotid arteries was investigated at two head postures, a) the supine neutral and b) the prone sleeping with head rotation leftwards up to 80° to investigate the level of stenosis and the changes in geometric parameters with head rotation.

scholarly journals Zero-Shot Learning from Adversarial Feature Residual to Compact Visual Feature

2020 ◽  
Vol 34 (07) ◽  
pp. 11547-11554
Author(s):  
Bo Liu ◽  
Qiulei Dong ◽  
Zhanyi Hu
Keyword(s):  
State Of The Art ◽  
Feature Space ◽  
Visual Features ◽  
Selection Strategy ◽  
Semantic Features ◽  
Visual Feature ◽  
Adversarial Network ◽  
Benchmark Datasets ◽  
Residual Generator ◽  
Object Features

Recently, many zero-shot learning (ZSL) methods focused on learning discriminative object features in an embedding feature space, however, the distributions of the unseen-class features learned by these methods are prone to be partly overlapped, resulting in inaccurate object recognition. Addressing this problem, we propose a novel adversarial network to synthesize compact semantic visual features for ZSL, consisting of a residual generator, a prototype predictor, and a discriminator. The residual generator is to generate the visual feature residual, which is integrated with a visual prototype predicted via the prototype predictor for synthesizing the visual feature. The discriminator is to distinguish the synthetic visual features from the real ones extracted from an existing categorization CNN. Since the generated residuals are generally numerically much smaller than the distances among all the prototypes, the distributions of the unseen-class features synthesized by the proposed network are less overlapped. In addition, considering that the visual features from categorization CNNs are generally inconsistent with their semantic features, a simple feature selection strategy is introduced for extracting more compact semantic visual features. Extensive experimental results on six benchmark datasets demonstrate that our method could achieve a significantly better performance than existing state-of-the-art methods by ∼1.2-13.2% in most cases.

Study on the Fuzzy-PID Policy for Force Control in Free-Form Surfaces Polishing by Robots

2011 ◽  
Vol 101-102 ◽  
pp. 422-426
Author(s):  
Xiao Ling Su ◽  
Jian Ming Zhan
Keyword(s):  
Force Control ◽  
Normal Direction ◽  
Curved Surface ◽  
Free Form ◽  
Work Piece ◽  
Fuzzy Pid ◽  
Polishing Force ◽  
The Right ◽  
Free Form Surfaces ◽  
Polishing Tool

When a robot is used to polish or finish a curved surface, both feed movement and contact force have to be controlled at the same time so that the polishing tool would machine its work-piece at the right position in right posture with required force. In this paper, a passive wrist system is developed to adapt the shape of the machining curved surface by changing its posture along with the surface. And under the Fuzzy-PID policy, polishing force is controlled at a stable value in the normal direction of the named machining point while the polishing tool moving along the curved surface by multi-point machining. It means that the passive wrist system and the model of the surroundings could be used in force controlling when robots polish free-form surfaces with multi-point machining by a grinding ring.

Shape Intrinsic Properties for Free-Form Object Matching

2003 ◽  
Vol 3 (4) ◽  
pp. 325-333 ◽  
Author(s):  
K. H. Ko ◽  
T. Maekawa ◽  
N. M. Patrikalakis ◽  
H. Masuda ◽  
F.-E. Wolter
Keyword(s):  
Free Form ◽  
Computational Algorithms ◽  
Challenging Problem ◽  
Intrinsic Properties ◽  
Object Matching ◽  
Computing Power ◽  
Matching Methods ◽  
Umbilical Points ◽  
Cad Cam ◽  
Object Features

Despite extensive research and rapid increase of computing power, free-form object matching still remains a challenging problem in CAD/CAM areas. In this paper, various object features are discussed, and matching methods which use these features are introduced along with robust computational algorithms for umbilical points and intrinsic wireframes. The similarity of matched objects is assessed with three proposed tests. Each algorithm is demonstrated with examples.

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