Use Of 3D Computer Graphics Research Articles

Simplified Determination of RHEED Patterns and Its Explanation Shown with the Use of 3D Computer Graphics.

The process of preparation of nanostructured thin films in high vacuum can be monitored with the help of reflection high energy diffraction (RHEED). However, RHEED patterns, both observed or recorded, need to be interpreted. The simplest approaches are based on carrying out the Ewald construction for a set of rods perpendicular to the crystal surface. This article describes how the utilization of computer graphics may be useful for realistic reproduction of experimental conditions, and then for carrying out the Ewald construction in a reciprocal 3D space. The computer software was prepared in the Java programing language. The software can be used to interpret real diffractions patterns for relatively flat surfaces, and thus it may be helpful in broad research practice.

ANIMATED 3D GRAPHICS AS VISUAL BRAND COMMUNICATION ON UKRAINIAN TELEVISION


 
 
 The research of the use of 3D computer graphics in commercials is conducted based on monitoring of the commercial breaks on TV channels «1+1», «Inter» and «Ukraine» in the years 2015-2017. The TV channels for the research were chosen according to their performance and results of the international and Ukrainian festivals of advertising and TV design, as well as to the percentage of usage of 3D computer graphics in the winning projects. There were 27 round-the-clock monitoring sessions conducted. More than 17 000 commercials were defined and classified based on 3D computer graphics usage. The conclusions concerning the urgency of using three-dimensional animation as the means of visual brand communication and the quality level of the 3D computer graphics in the TV commercials are determined herewith.
 
 

The use of 3D computer graphics to preserve, reproduce and obtain information relating to a historically valuable object

The use of 3D computer graphics to preserve, reproduce and obtain information relating to a historically valuable object

Design of tunable acoustic metamaterials using 3D computer graphics

The goal of this work is to investigate how the combination of 3D computer graphics and finite element software can be used to rapidly design materials with tunable properties for noise and vibration mitigation applications. Algorithms and software that create three-dimensional objects, known collectively as 3D computer graphics, are widely used artistically for rendering, animation, and game creation. These approaches allow for the design of complex topological structures such as cellular solids. This presentation describes the use of 3D computer graphics to design cellular structures, which can be imported into finite element software in order to determine effective vibrational properties. This approach is advantageous for several reasons. It allows for quick variation of parameters of cellular solids such as porosity and void fraction. It also is time efficient compared to alternative methods such as performing computed tomography scans on physical samples and analyzing the imaged files. Furthermore, resulting designs can be easily fabricated by direct 3D printing. This presentation will include analysis and discussion of designs generated by the proposed approach.

3D selection with freehand gesture

The use of 3D computer graphics is important in a very wide range of applications. However, user interaction with 3D applications is still challenging and often does not lend itself to established techniques that have been developed primarily for 2D desktop interaction. Meanwhile, 3D user interfaces that rely on tracking hand-held devices or fiducial markers attached to the user are cumbersome or entirely inappropriate in some situations. These challenges may be addressed by refining and building on the increasing use of freehand gestural input, i.e. without markers or hand-held devices, to extend the fluidity and immediacy of today's 2D touch-based interactions. In this paper, we analyze the characteristics of freehand gestural 3D interaction, and report a set of 3 related evaluation studies focused on the fundamental user interface task of object selection. We found that interaction design requiring a high accuracy single action are not appropriate for freehand gestural selection, while separating it into several connected low demand operations could be a potential solution; that our Reach technique is accurate and potentially useful for option selection tasks with freehand gesture; and that strong directional effects influence performance and usability of both 2D and 3D option selection. We propose guidelines for designers of 3D freehand gestural interaction based on our evaluation results.

The use of 3D computer graphics in the diagnosis and treatment of spinal vascular malformations

Digital subtraction (DS) angiography is the gold standard for diagnosing spinal vascular malformations. Recently, multidetectorrow spiral CT and contrast-enhanced MR angiography have been introduced as screening examinations before DS angiography. These methods, however, do not always determine the accurate location of an arteriovenous shunt because the resulting images lack information about the spinal cord or the dura mater. Between April 2009 and December 2010, 13 patients underwent imaging evaluations for spinal vascular malformations at the authors' university hospital. This group included 8 patients with spinal dural arteriovenous fistulas (AVFs), 3 with perimedullary AVFs, and 2 with intramedullary arteriovenous malformations. Using data from these patients, the authors attempted to develop 3D computer graphics (CG) based upon the fusion of 3D rotational angiography and postmyelographic CT. They subsequently verified the accuracy of this imaging method. Ten of these 13 patients underwent surgical treatment for their lesions (11 AVFs), and for these 11 lesions the authors compared the diagnoses obtained using 3D CG with those obtained using conventional DS angiography. In all 13 cases, 3D CG images of the spinal lesions were successfully developed using the patients' actual data. Four (36%) of 11 AVFs were correctly identified using DS angiography, whereas 10 (91%) were correctly identified using 3D CG. Results from 3D CG of spinal AVFs corresponded well with operative findings, and 3D CG was significantly better than conventional DS angiography at predicting AVF location (p = 0.024, Fisher exact test). To the authors' knowledge, this is the first reported case series in which 3D CG of spinal vascular malformations was used to provide simultaneous, stereoscopic visualization of the spinal vascular system, spinal cord, dura mater, and bone. The 3D CG method provides precise visual images for the diagnosis and treatment of these lesions.

Life Drawing and 3D Figure Modeling with MAYA: Developing Alternatives to Photo-Realistic Modeling

This paper discusses the organization and motivation for a workshop devoted to the experimental use of 3D computer graphics to model the human figure. The workshop introduced a simple technique for modeling a leg by lofting a series of circles into the appropriate shape using sketches drawn from life. This approach links the expressive world of drawing to the impersonal mechanical tasks of computer modeling. The workshop also served as an introduction to 3D modeling and the MAYA 3D Computer Graphics Software Graphical User Interface. The drawing exercises of Kimon Nicolaïdes are discussed and provide inspiration to explore alternatives to photo-realistic modeling that reflect the artistic legacy of early modernist experiments such as cubism and futurism.