OpenGL Programming Research Articles

Проектування програми візуалізації земної поверхні з використанням алгебро-алгоритмічного інструментарію

One of the important challenges in meteorological forecasting is a computer visualization of prognosis data, in particular, three-dimensional modeling of terrain surface relief. One of the most popular software tools for developing data visualization applications is OpenGL, a cross-language, cross-platform application programming interface for rendering two-dimensional and three-dimensional vector graphics. Data visualization is a fairly complex task, therefore it is necessary to develop special tools intended for automated generation of source code for such tasks. The paper deals with the further development of previously developed algebra-algorithmic tools in the direction of automated design and synthesis of OpenGL programs. Automated construction of programs is implemented using a high-level language based on Glushkov’s system of algorithmic algebra. The approach is illustrated on designing a terrain surface relief visualization program for weather forecasting task.

Generating Virtual Images for Multi‐view Video

As for the research in the Free view television (FTV) and stereo video areas, the accurate multi-view video capture is a expensive precondition. We present a virtual multi-view video capture system based on OpenGL programming. By using this system, a researcher may create arbitrary 3D scenes, and capture images with depth maps by setting up multiple virtual cameras, whose intrinsic and extrinsic parameters can be imported from or exported to the outside.We conducted several experiments within it to perform camera calibration, depth estimation and view-points synthesis. The system has been demonstrated to be a powerful tool for evaluation of stereo video algorithms.

RASMOL AB - new functionalities in the program for structure analysis.

For many years RasMol was one of the most used programs for molecular visualization. It was an excellent tool due to its simplicity and its low demand of computer power. Today it is replaced by OpenGL programs, which have excellent graphics that new computers can additionally handle. Molecular graphics is one of the best tools for the analysis of biomolecular data. With high efficiency and a low demand of computer power, RasMol can still be used as a quick and handy tool used for the analysis of biomolecular structures with good results. In this paper, we describe modifications to the RasMol program, as implemented on the base of RasMol AB 2. We introduced several new functions, namely: the identification of histidine isomers, and advanced structural selection and macro capabilities (as implemented in the point-click menu), which result in an increase in the speed and accuracy of structural analyses. The program can be downloaded from the project page: http://etoh.chem.univ.gda.pl/rasmol/.

3-D from 2-D Using Warping Transformations .

Shown in this paper are methods on how to find the third dimension of a single image or from the two views of the image taking in a different angle using the method more accurate and faster to get to the third dimension in the following cases: One image of the same scene. Two views of the same scene from two different perspectives. Pictures of parts of the same scene. Set of pictures for different views of the work of the subject Panorama. This method is known Image Warping, which falls below a set of transfers such as (Affine - Bilinear - Projective - Mosaic – Similarity transformation) was compared to the work of transfers between the previous and this will be applied to more pictures. The idea is based on building code software is built on the programming language Visual C + + with the library for drawing an OpenGL program Matlab, which way can build a model of the following conversions, which fall under the so-called image warping of the conversion linear Bilinear Mapping and conversion Affine Mapping and conversion imagery Projective Mapping . shown in this paper are methods on how to correct camera exposure changes and how to blend the stitching line between the images. We will show panorama photos generated from both still image.

Research on the 6DOF Robot Simulation and Modeling

Visual simulation technology is still playing an important role in the robot design and research field. This article establishes a robot palletizing simulation system visualization based on VisualC++ and OpenGL programming tool. This system synthetically evaluates the man-machine interface, the robot three-dimensional modeling and environmental modeling. In addition, modeling of robot is divided into two parts static modeling and kinematic modeling. Finally, for the purpose of the robot movement trajectory and collision avoidance behavior in the palletizing system, it provides numerous theoretical and practical bases.

Comprehensive Analysis of High-Performance Computing Methods for Filtered Back-Projection

This paper provides an extensive analysis concerning runtime, accuracy and noise of High-Performance Computing (HPC) frameworks for Computed Tomography (CT) reconstruction tasks: "conventional" multi-core, multi threaded CPUs, the Compute Unified Device Architecture (CUDA) on GPUs, and the graphics pipeline of GPUs as facilitated by the DirectX or OpenGL programming interfaces, exploiting various built-in hardwired features like rasterization and texture filtering. We compare implementations of the Filtered Back-Projection (FBP) algorithm with fan-beam geometry on all these HPC frameworks. Specifically, an ACR-accredited phantom is reconstructed from the raw attenuation data acquired by a clinical CT scanner. Our analysis shows that a single GPU can run the FBP algorithm for reconstructing a 1024 x 1024 image considerably faster than a 64-core, multi-threaded CPU machine. Moreover, employing the graphics pipeline further increases performance as compared to CUDA, albeit with slightly lower accuracy due to "fast math" operations.

Parallel Rendering Mechanism for Graphics Programming on Multicore Processors

The present day technological advancement has resulted in multiple core processors coming into desktops, handhelds, servers and workstations. This is because the present day applications and users demand huge computing power and interactivity. Both of these reasons have resulted in a total design shift in the way the processors are designed and developed. However the change in the hardware has not been accompanied with the change in the way the software has to be written for these multicore processors. In this paper, we intend to provide the integration of OpenGL programs on a platform which supports multicore processors. The paper would result in clear understanding how graphics pipelines can be implemented on multi-core processors to achieve higher computational speeds up with highest thread granularity. The impacts of using too much parallelism are also discussed. An OpenMP API for the thread scheduling of parallel task is discussed in this paper. The tool Intel VTune Performance Analyzer is used to find the hotspots and for software optimization. Comparing both the serial and parallel execution of graphics code shows encouraging results and it has been found that the increase in frame rate has resulted due to parallel programming techniques.

Study and Analysis Texture Mapping Technology Based on OpenGL

The program development process based on the OpenGL in order to make the resulting image with a high degree of realism, we often use technology to manipulate the image texture, because Using texture mapping can easy build abundant and vivid scenes in OpenGL programs, Texture mapping through the pixel and geometry object union, to create a geometry object is very complex, real visual effect, also avoided a lot of geometric model established for overhead.

OpenGL’s Application in Solid State Physics Courseware Development

The OpenGL programming is used to develop courseware in solid physics. Firstly, the OpenGL ‘s initialization and Release action at the end of program is a encapsulation of a GLScene control through the C++ Builder’s control development function and add it to the Compoment Palette. Then, according to requirements, some OpenGL function are packaged into a class. Finally, the designed face centre cubic lattice structure courseware is develped. The advantages are really 3d images can be got, the size, location and geometry exercise can be described strictly according to the given parameter or function, and can realize human-computer interaction, real-time describe.

Computer Simulation on Intensity Distribution of UV Irradiation System

The intensity distribution of a UV linear light source and a UV linear light with a parabolic cylinder reflector on work piece surface were simulated using OpenGL program based on VC++6.0. Physical models were established and relevant fundamental assumptions were given. The results of the simulation fitted the real situation quite well. It is feasible to adjust the parameters of UV-curing radiation system using the results of computer simulation.

Design 3-D ultrasonic spatial mouse using microprocessor system

The Ultrasonic sensors can be used to accurately measure the distance to an object. These sensors normally work in transmitter/receiver pairs, and can be used for a wide variety of applications in which range analysis is required. The 3-D Ultrasonic Spatial Mouse was designed with ultrasonic sensors to measure distances in close range in three dimensions, and to output on PC the functions of a 3-D pointing device. A MOTOROLA MC68HC812A4 microcontroller was used to implement the sensor functions, and was interfaced to the PC via serial communicationswhere the screen output was rendered with OPENGL programming. Ultrasonic transmitters work by emitting high frequency signals, and the receivers capture the signals. The devices chosen for this project, Devantech SRF04 Ultrasonic Range Finders, operated at frequencies of around 40 KHz. A device was successfully implemented that sent three dimensions of data to a PC, and the position of a mouse on screen was rendered moving in a well-defined 3-D box of space. In addition, the 2-D and button capabilities of a typical mouse device were maintained.

Study on the Virtual Simulation of Flight Environment Based on OpenGL

According to the flight dynamic mathematical model and the kinematic mathematical model, this article adopts the Visual C++6.0 visualization development environment and the OpenGL programming technology to simulate the flight rule of the aircraft. The flight environment virtual simulation system can simulate the flight rules in 3D space and users can control the 3D aircraft real time by the keyboards, and the main parameters of the aircraft can dynamically change with it, and the interface of the software is friendly and easy to operate.

3 ‐ D Computer Graphics: A Mathematical Introduction with OpenGL

From the Publisher: This book is aimed at the advanced undergraduate level or introductory graduate level and can also be used for self-study. Prerequisites include basic knowledge of calculus and vectors. The OpenGL programming portions require knowledge of programming in C or C++. The more important features of OpenGL are covered in the book, but it is intended to be used in conjunction with another OpenGL programming book.

SU‐FF‐I‐39: Development of Clinical Application Platform Using Digital Tomosynthesis for Target Localization

Purpose: To develop a workstation for clinical application of digital tomosynthesis (DTS) for real‐time target localization. Specifically, to accelerate the reconstruction both digitally‐reconstructed radiograph (DRR) and DTS using ultra‐fast interpolation capability of graphics hardware. Method and Materials: The developed workstation for real‐time target localization using DTS technology includes image acquisition, image reconstruction, and image comparison. A critical step to implement this technology is its reconstruction speed, especially real‐time generation of reference DTSs which require DRRs. The new generation graphics hardware provides a fast implementation of image interpolation and allows the bi‐linear/tri‐linear interpolation and the other image operations to be accomplished within second. We implemented classical ray‐casting algorithm for 2D DRR and filtered back‐projection (FBP) algorithm for DTS reconstruction on graphics hardware based on OpenGL programming interface. Specifically, planning CT images and on‐board projection images were loaded into the memory of hardware and saved as textures which were projected onto frame‐buffer according to the given geometry of imaging system. The final images were generated by blending multiple textures projected onto the frame‐buffer. Difference images and correlation coefficients between hardware and software DRRs and DTSs were calculated to assess their similarity. Results: The mean errors and their standard deviations of the differences DRR and DTS images are 1.0% ± 1.5% and 1.2% ± 2.1%. The correlation coefficients are 99.9% for DRRs and 99.5% for DTS. The reconstructed efficiency was improved by a factor of 67 for DRR and 13 for DTS. Conclusions: The hardware method provides fast reconstructions of DRR and DTS with visibility of anatomical structures comparable to those generated using software methods.This allows real‐time target localization for image registration between on‐board and reference DTSs in the application platform.

Teach 2D graphics concepts with an OpenGL graphing program

The authors present an OpenGL program that draws a sheet of interactive graph paper on the computer screen. Examples are given illustrating how the program is used to teach 2D concepts in the beginning of a graphics course. The students in this course also code the program over a five week period. The student assignments and the graphing program are available via internet download.

OpenGL programming in Java

Released by Sun Microsystems in 2003, Java binding for OpenGL (JOGL; https://jogl.dev.java.net) provides students, scientists, and engineers with a new development environment for studying graphics, performing research, and building applications. In this article, the authors introduce JOGL and discuss two sample programs that demonstrate the environment's capabilities.

Teaching an introductory computer graphics course using OpenGL

In the past, introductory graphics courses focused traditionally on algorithms for drawing points, lines and polygons using low-level or system specific commands. This approach has become dated with the introduction of OpenGL and other high level 3D graphics application programming interfaces (API). OpenGL is an API that provides access to graphics hardware through functions common to 3D graphical applications. This tutorial focuses on using OpenGL to teach a junior/senior level elective course in computer graphics. Both OpenGL programming techniques and the design of a high level 3D graphics API such as OpenGL will be covered.

Graphical View of Protein Data Based on OpenGL Programming

Graphical View of Protein Data Based on OpenGL Programming

2-5 OpenGLで生成した画像を用いたホログラフィックステレオグラム作製

2-5 OpenGLで生成した画像を用いたホログラフィックステレオグラム作製