Image Space Coordinates Extraction Algorithm Based on the Perspective Projection Transformation Matrix

2014 ◽  
Vol 644-650 ◽  
pp. 4368-4371
Author(s):  
Bao Long Zhang ◽  
Ji Chao Yang ◽  
Hong Rui Lee
Keyword(s):  
Computer Graphics ◽  
Calculation Method ◽  
Matrix Theory ◽  
Transformation Matrix ◽  
Image Space ◽  
Image Point ◽  
Perspective Projection ◽  
3D Graphics ◽  
Extraction Algorithm ◽  
Projection Transformation

The paper analyses the 3D graphics transformation in computer graphics and its displays process. The method of graphics transformation is introduced. The analysis focuses on the perspective projection transformation matrix theory and its derivation. The calculation method of image space coordinates in the image point coordinates systems is introduced.

Projection Transformation on 3D Object’s Three Views

2014 ◽  
Vol 1049-1050 ◽  
pp. 1950-1953
Author(s):  
Yu Lei Wang ◽  
Yin Han Gao ◽  
Wei Lei Wang
Keyword(s):  
Transformation Matrix ◽  
Matrix Transformation ◽  
Practical Application ◽  
3D Object ◽  
Transformation Algorithm ◽  
Projection Transformation

We always use projection transformation to display and draw 3D object. With the aid of matrix transformation algorithm, this paper deduces projection transformation matrix of 3D object’s three views, gets these points’planar coordinate, then we can present the three views. It has practical application value.

418 Practical use of fast calculation method of radiation using computer graphics technique

2005 ◽  
Vol 2005.15 (0) ◽  
pp. 390-393
Author(s):  
Takashi UENAKA ◽  
Kaoru IKEJIMA ◽  
Kenji SHIOTANI ◽  
Akikazu KAGA ◽  
Akira KONDO
Keyword(s):  
Computer Graphics ◽  
Calculation Method ◽  
Fast Calculation

N-PARTICLE GENERAL W STATE AND PROBABILISTIC TELEPORTATION

2007 ◽  
Vol 21 (25) ◽  
pp. 4387-4397 ◽  
Author(s):  
YONG-CHANG HUANG ◽  
M. LIU ◽  
MENG SUO
Keyword(s):  
Unitary Transformation ◽  
General Scheme ◽  
Transformation Matrix ◽  
The Other ◽  
W State ◽  
General State ◽  
The Past ◽  
Probabilistic Teleportation ◽  
Entanglement States ◽  
Projection Transformation

We show a general W state of N-particle entanglement. Using four pairs of two-particle non-maximally entanglement states, we give a general scheme of probabilistic teleportation of the four-particle general W state by constructing a 5 × 5 projection transformation matrix different from the other references. The general scheme overcomes the difficulty of having to introduce an auxiliary state |0>A in order to get a complex unitary transformation matrix. Thus, we need not perform more operations and measurements than the past researches. We then give a general scheme of the probabilistic teleportation of the N-particle general W state by means of N pairs of general entanglement particles, and the scheme may be applied to all the researches and calculation about the probabilistic teleportation of N-particle entanglement general state by means of N pairs of general entanglement particles, and may simplify their researches, calculation, physical operations and measurements.

scholarly journals ANIMATED 3D GRAPHICS AS VISUAL BRAND COMMUNICATION ON UKRAINIAN TELEVISION

2019 ◽  
pp. 31-36
Author(s):  
Larysa Rarenko
Keyword(s):  
Computer Graphics ◽  
Three Dimensional ◽  
Quality Level ◽  
3D Graphics ◽  
Brand Communication ◽  
Tv Commercials ◽  
Commercial Breaks

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.

Computer Plotting of Quadric Surface

2011 ◽  
Vol 66-68 ◽  
pp. 1006-1011
Author(s):  
Jing Hua Wen ◽  
Mei Zhang ◽  
Wei Xiao
Keyword(s):  
Computer Graphics ◽  
Data Visualization ◽  
Main Line ◽  
Free Form ◽  
Complex Object ◽  
3D Graphics ◽  
Quadric Surface ◽  
Computer Mapping ◽  
3D Data

Quadric surface is an important part of complex object and free form object, showing its graphics is hot research of computer graphics and 3D data visualization. Researching quadric and deducing the process of its classification. Taking three 3D graphics commands contour3,ezmesh and ezsurf as main line, it is analyzed that 3D drawing function of Matlab7.It comes true that programming is to draw 3D graphics of all kinds of quadric, and it was compared that various graphics results, it can provide reference for computer mapping of any other surface objects.

Architecture for Vertex Transformation and Triangle Clipping in 3D Graphics

2013 ◽  
Vol 462-463 ◽  
pp. 1040-1045
Author(s):  
Bo Zhi Liu ◽  
Tao Sun ◽  
Li Zhou ◽  
Jia Wang ◽  
Yuan Zhi Zhang
Keyword(s):  
Traditional Method ◽  
Transformation Matrix ◽  
Experimental Results ◽  
3D Graphics ◽  
Transformation Matrices

This paper focuses on the implementation of vertex transformation and triangle clipping in the field of 3D acceleration. A dedicated matrix accumulating architecture is proposed to multiply transformation matrices and generate an accumulated transformation matrix. Then the accumulated transformation matrix is used for per vertex transformation. A combined clipping algorithm of Cohen-Sutherland and Sutherland-Hodgeman is adopted to accelerate triangle clipping. In addition, the clipping process is pipelined in order to increase the throughput. Experimental results show that our implementation can reach more than 25% performance higher than traditional method.

scholarly journals Multivisual Animation Character 3D Model Design Method Based on VR Technology

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Leiming Li ◽  
Wenyao Zhu ◽  
Hongwei Hu
Keyword(s):  
Virtual Reality ◽  
Computer Graphics ◽  
Stereo Vision ◽  
3D Model ◽  
Three Dimensional ◽  
Geometric Transformation ◽  
3D Graphics ◽  
Binocular Stereo Vision ◽  
Binocular Stereo ◽  
Rendering Pipeline

For VR systems, one of its core parts is to present people with a real and immersive 3D simulation environment. This paper uses real-time computer graphics technology, three-dimensional modeling technology, and binocular stereo vision technology to study the multivisual animation character objects in virtual reality technology; designs a binocular stereo vision animation system; designs and produces a three-dimensional model; and develops a virtual multivisual animation scene application. The main research content and work performed in the text include the research of the basic graphics rendering pipeline process and the analysis and research of each stage of the rendering pipeline. It mainly analyzes the 3D graphics algorithm used in the three-dimensional geometric transformation of computer graphics and studies the basic texture technology, basic lighting model, and other image output processes used in the fragment processing stage. Combined with the development needs of the subject, the principles of 3D animation rendering production software and 3D graphics modeling are studied, and the solid 3D model displayed in the virtual reality scene is designed and produced. This article also reflects the application of virtual reality in multivisual animation character design from the side, so it has realistic value and application prospects.

scholarly journals Reconstruction of Curve Networks from Unorganized Spatial Points

2020 ◽  
Vol 26 (9) ◽  
pp. 1265-1280
Author(s):  
Shuangbu Wang ◽  
Yu Xia ◽  
Lihua You ◽  
Jianjun Zhang
Keyword(s):  
Principal Component Analysis ◽  
Computer Graphics ◽  
Reverse Engineering ◽  
Iterative Algorithm ◽  
Euclidean Distance ◽  
Principal Component ◽  
Automatic Method ◽  
Extraction Algorithm ◽  
Reconstruction Efficiency ◽  
Curve Networks

Curve network reconstruction from a set of unorganized points is an important problem in reverse engineering and computer graphics. In this paper, we propose an automatic method to extract curve segments and reconstruct curve networks from unorganized spatial points. Our proposed method divides reconstruction of curve networks into two steps: 1) detecting nodes of curve segments and 2) reconstructing curve segments. For detection of nodes of curve segments, we present a principal component analysis-based algorithm to obtain candidate nodes from unorganized spatial points and a Euclidean distance-based iterative algorithm to remove peripheral nodes and find the actual nodes. For reconstruction of curve segments, we propose an extraction algorithm to obtain the points on each of curve segments. We present quite a number of examples which use our proposed method to reconstruct curve networks from unorganized spatial points. The results demonstrate the effectiveness of our proposed method and its advantages of good automation and high reconstruction efficiency.

The Design and Implementation of 3D Experimental Model Based on VB and OpenGL

2011 ◽  
Vol 268-270 ◽  
pp. 1339-1342
Author(s):  
Yang Liu ◽  
Wen Bo Fang ◽  
Nan Xin Qin ◽  
Hong Yu
Keyword(s):  
Experimental Model ◽  
Transformation Matrix ◽  
3D Graphics ◽  
C Language ◽  
Design And Implementation ◽  
Model Based ◽  
Set Up ◽  
Excellent Tool

OpenGL is an excellent tool for developing 3D graphics. Because of its language based on C language, the documents which about OpenGL application in VB are very scarce currently. This article uses a 3D experimental model developed by OpenGL in VB environment as example, to introduce how to set up OpenGL framework in VB, and how to draw 3D graphics and implement interact, how to use the transformation matrix to control the transformations of 3D graphics, to provide some experiences and methods for VB programmers.

Sign in / Sign up

Export Citation Format

Share Document