Towards real-time photorealistic rendering

1997 ◽  
Author(s):  
Andreas Schilling
Keyword(s):  
Real Time ◽  
Photorealistic Rendering

scholarly journals Real Time Shadow Mapping for Augmented Reality Photorealistic Rendering

2019 ◽  
Vol 9 (11) ◽  
pp. 2225 ◽  
Author(s):  
Francesco Osti ◽  
Gian Maria Santi ◽  
Gianni Caligiana
Keyword(s):  
Augmented Reality ◽  
Real Time ◽  
Real Life ◽  
Shadow Mapping ◽  
Photorealistic Rendering ◽  
Real Time Image ◽  
Image Capturing ◽  
Microsoft Hololens ◽  
The Right ◽  
Time Image

In this paper, we present a solution for the photorealistic ambient light render of holograms into dynamic real scenes, in augmented reality applications. Based on Microsoft HoloLens, we achieved this result with an Image Base Lighting (IBL) approach. The real-time image capturing that has been designed is able to automatically locate and position directional lights providing the right illumination to the holograms. We also implemented a negative “shadow drawing” shader that contributes to the final photorealistic and immersive effect of holograms in real life. The main focus of this research was to achieve a superior photorealism through the combination of real-time lights placement and negative “shadow drawing” shader. The solution was evaluated in various Augmented Reality case studies, from classical ones (using Vuforia Toolkit) to innovative applications (using HoloLens).

Combining spherical harmonics and point lights for real-time photorealistic rendering

2014 ◽  
Author(s):  
Inwoo Ha ◽  
Minsu Ahn ◽  
Hyungwook Lee ◽  
James D. K. Kim
Keyword(s):  
Real Time ◽  
Spherical Harmonics ◽  
Photorealistic Rendering

RPR-SORS: Real-time photorealistic rendering of synthetic objects into real scenes

2012 ◽  
Vol 36 (2) ◽  
pp. 50-69 ◽  
Author(s):  
Saulo A. Pessoa ◽  
Guilherme de S. Moura ◽  
Joao Paulo S. do M. Lima ◽  
Veronica Teichrieb ◽  
Judith Kelner
Keyword(s):  
Real Time ◽  
Photorealistic Rendering

The Modeling and Rendering of the Waves

2013 ◽  
Vol 756-759 ◽  
pp. 1766-1768
Author(s):  
Ming Li
Keyword(s):  
Real Time ◽  
Texture Mapping ◽  
Physical Models ◽  
Mesh Model ◽  
Photorealistic Rendering ◽  
Spectrum Function ◽  
Mapping Techniques ◽  
The Waves

The article analyzes the mathematical and physical models of the waves. Base on the oceanography existing statistical observations and spectrum function formula. This article puts forward the method of making waves modeling, and using mesh model and texture mapping techniques to achieve a photorealistic rendering of the waves. The methods have achieved good results in realistic and real-time.

Non-Photorealistic Rendering Effect of Halftoning

2013 ◽  
Vol 373-375 ◽  
pp. 473-477
Author(s):  
Dan Zou ◽  
Wen Hua Qian ◽  
Jin Xu ◽  
Zheng Peng Zhao ◽  
Zhi Ming Chen
Keyword(s):  
Real Time ◽  
Image Enhancement ◽  
Experimental Results ◽  
Diffusion Method ◽  
Source Image ◽  
Error Diffusion ◽  
Gray Image ◽  
Photorealistic Rendering ◽  
2D Images

To provide with an effective method for non-photorealistic rendering for computer generated images with halftoning artistic appearances from 2D images motivates our work in this paper. The methods proposed in this paper are inspired by improved error diffusion method and image enhancement, and the whole diffusion algorithm is based on the average threshold. Firstly, source image should be transferred to the gray image. Then, error diffusion, spread component and parameter confirming can be used to obtain more details. Experimental results show that the proposed method can simulate the halftoning effect in real time, and blemishes of the results can be eliminated.

Some Recent Results in Quiescent Prominence Spectrometry

1979 ◽  
Vol 44 ◽  
pp. 41-47
Author(s):  
Donald A. Landman
Keyword(s):  
Real Time ◽  
Computer System ◽  
Spectral Response ◽  
Absolute Intensity ◽  
Solar Observatory ◽  
Target Size ◽  
Small Target ◽  
Signal Averaging ◽  
Quiescent Prominence

This paper describes some recent results of our quiescent prominence spectrometry program at the Mees Solar Observatory on Haleakala. The observations were made with the 25 cm coronagraph/coudé spectrograph system using a silicon vidicon detector. This detector consists of 500 contiguous channels covering approximately 6 or 80 Å, depending on the grating used. The instrument is interfaced to the Observatory’s PDP 11/45 computer system, and has the important advantages of wide spectral response, linearity and signal-averaging with real-time display. Its principal drawback is the relatively small target size. For the present work, the aperture was about 3″ × 5″. Absolute intensity calibrations were made by measuring quiet regions near sun center.

Video real-time imaging of artificial membranes during freeze-drying by cryo-electron microscopy

1988 ◽  
Vol 46 ◽  
pp. 16-17
Author(s):  
Alan S. Rudolph ◽  
Ronald R. Price
Keyword(s):  
Real Time ◽  
Self Assembly ◽  
Freeze Drying ◽  
Video Capture ◽  
Drying Process ◽  
Artificial Membranes ◽  
The Past ◽  
Cryo Electron Microscopy ◽  
Spherical Structures ◽  
Capture Techniques

We have employed cryoelectron microscopy to visualize events that occur during the freeze-drying of artificial membranes by employing real time video capture techniques. Artificial membranes or liposomes which are spherical structures within internal aqueous space are stabilized by water which provides the driving force for spontaneous self-assembly of these structures. Previous assays of damage to these structures which are induced by freeze drying reveal that the two principal deleterious events that occur are 1) fusion of liposomes and 2) leakage of contents trapped within the liposome [1]. In the past the only way to access these events was to examine the liposomes following the dehydration event. This technique allows the event to be monitored in real time as the liposomes destabilize and as water is sublimed at cryo temperatures in the vacuum of the microscope. The method by which liposomes are compromised by freeze-drying are largely unknown. This technique has shown that cryo-protectants such as glycerol and carbohydrates are able to maintain liposomal structure throughout the drying process.

An Interactive Minicomputer Program for the Indexing and Simulation of Electron Diffraction Patterns

1976 ◽  
Vol 34 ◽  
pp. 542-543
Author(s):  
R.P. Goehner ◽  
W.T. Hatfield ◽  
Prakash Rao
Keyword(s):  
Electron Diffraction ◽  
Real Time ◽  
Pattern Analysis ◽  
Flow Diagram ◽  
Hard Copy ◽  
Time Analysis ◽  
Real Time Analysis ◽  
Transmission Electron ◽  
One Step ◽  
Diffraction Patterns

Computer programs are now available in various laboratories for the indexing and simulation of transmission electron diffraction patterns. Although these programs address themselves to the solution of various aspects of the indexing and simulation process, the ultimate goal is to perform real time diffraction pattern analysis directly off of the imaging screen of the transmission electron microscope. The program to be described in this paper represents one step prior to real time analysis. It involves the combination of two programs, described in an earlier paper(l), into a single program for use on an interactive basis with a minicomputer. In our case, the minicomputer is an INTERDATA 70 equipped with a Tektronix 4010-1 graphical display terminal and hard copy unit.A simplified flow diagram of the combined program, written in Fortran IV, is shown in Figure 1. It consists of two programs INDEX and TEDP which index and simulate electron diffraction patterns respectively. The user has the option of choosing either the indexing or simulating aspects of the combined program.

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