Browsing 30-Issue 7 by Issue Date
Now showing items 1-20 of 28
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Toward Optimal Space Partitioning for Unbiased, Adaptive Free Path Sampling of Inhomogeneous Participating Media
(The Eurographics Association and Blackwell Publishing Ltd., 2011)Photo-realistic rendering of inhomogeneous participating media with light scattering in consideration is impor- tant in computer graphics, and is typically computed using Monte Carlo based methods. The key technique in ... -
Interactive Indirect Illumination Using Voxel Cone Tracing
(The Eurographics Association and Blackwell Publishing Ltd., 2011)Indirect illumination is an important element for realistic image synthesis, but its computation is expensive and highly dependent on the complexity of the scene and of the BRDF of the involved surfaces. While off-line ... -
Improving Performance and Accuracy of Local PCA
(The Eurographics Association and Blackwell Publishing Ltd., 2011)Local Principal Component Analysis (LPCA) is one of the popular techniques for dimensionality reduction and data compression of large data sets encountered in computer graphics. The LPCA algorithm is a variant of kmeans ... -
A Graph-based Approach to Continuous Line Illustrations with Variable Levels of Detail
(The Eurographics Association and Blackwell Publishing Ltd., 2011)This paper introduces a method for automatically generating continuous line illustrations, drawings consisting of a single line, from a given input image. Our approach begins by inferring a graph from a set of edges extracted ... -
Rephotography Using Image Collections
(The Eurographics Association and Blackwell Publishing Ltd., 2011)This paper proposes a novel system that 'rephotographs' a historical photograph with a collection of images. Rather than finding the accurate viewpoint of the historical photo, users only need to take a number of photographs ... -
An Illustrative Visualization Framework for 3D Vector Fields
(The Eurographics Association and Blackwell Publishing Ltd., 2011)Most 3D vector field visualization techniques suffer from the problem of visual clutter, and it remains a challenging task to effectively convey both directional and structural information of 3D vector fields. In this ... -
Creating Fluid Animation from a Single Image using Video Database
(The Eurographics Association and Blackwell Publishing Ltd., 2011)We present a method for synthesizing fluid animation from a single image, using a fluid video database. The user inputs a target painting or photograph of a fluid scene along with its alpha matte that extracts the fluid ... -
Motion Deblurring from a Single Image using Circular Sensor Motion
(The Eurographics Association and Blackwell Publishing Ltd., 2011)Image blur caused by object motion attenuates high frequency content of images, making post-capture deblurring an ill-posed problem. The recoverable frequency band quickly becomes narrower for faster object motion as high ... -
Edge-Optimized À-Trous Wavelets for Local Contrast Enhancement with Robust Denoising
(The Eurographics Association and Blackwell Publishing Ltd., 2011)In this paper we extend the edge-avoiding à-trous wavelet transform for local contrast enhancement while avoiding common artifacts such as halos and gradient reversals. We show that this algorithm is a highly efficient and ... -
Exposure Fusion for Time-Of-Flight Imaging
(The Eurographics Association and Blackwell Publishing Ltd., 2011)This work deals with the problem of automatically choosing the correct exposure (or integration) time for timeof- flight depth image capturing. We apply methods known from high dynamic range imaging to combine depth images ... -
Motion Retrieval Using Low-Rank Subspace Decomposition of Motion Volume
(The Eurographics Association and Blackwell Publishing Ltd., 2011)This paper proposes a novel framework that allows for a flexible and an efficient retrieval of motion capture data in huge databases. The method first converts an action sequence into a novel representation, i.e. the ... -
Flexible Splicing of Upper-Body Motion Spaces on Locomotion
(The Eurographics Association and Blackwell Publishing Ltd., 2011)This paper presents an efficient technique for synthesizing motions by stitching, or splicing, an upper-body motion retrieved from a motion space on top of an existing lower-body locomotion of another motion. Compared to ... -
SSD: Smooth Signed Distance Surface Reconstruction
(The Eurographics Association and Blackwell Publishing Ltd., 2011)We introduce a new variational formulation for the problem of reconstructing a watertight surface defined by an implicit equation, from a finite set of oriented points; a problem which has attracted a lot of attention for ... -
Asynchronous Evolution for Fully-Implicit and Semi-Implicit Time Integration
(The Eurographics Association and Blackwell Publishing Ltd., 2011)We propose a series of techniques for hybridizing implicit and semi-implicit time integration methods in a manner that retains much of the speed of the implicit method without sacrificing all of the higher quality vibrations ... -
Video Brush: A Novel Interface for Efficient Video Cutout
(The Eurographics Association and Blackwell Publishing Ltd., 2011)We present Video Brush, a novel interface for interactive video cutout. Inspired by the progressive selection scheme in images, our interface is designed to select video objects by painting on successive frames as the video ... -
Computing 3D Shape Guarding and Star Decomposition
(The Eurographics Association and Blackwell Publishing Ltd., 2011)This paper proposes an effective framework to compute the visibility guarding and star decomposition of 3D solid shapes. We propose a progressive integer linear programming algorithm to solve the guarding points that can ... -
Heat Walk: Robust Salient Segmentation of Non-rigid Shapes
(The Eurographics Association and Blackwell Publishing Ltd., 2011)Segmenting three dimensional objects using properties of heat diffusion on meshes aim to produce salient results. The few existing algorithms based on heat diffusion do not use the full knowledge that can be gained from ... -
Intelligent GPGPU Classification in Volume Visualization: A framework based on Error-Correcting Output Codes
(The Eurographics Association and Blackwell Publishing Ltd., 2011)In volume visualization, the definition of the regions of interest is inherently an iterative trial-and-error process finding out the best parameters to classify and render the final image. Generally, the user requires a ... -
Efficient Opacity Specification Based on Feature Visibilities in Direct Volume Rendering
(The Eurographics Association and Blackwell Publishing Ltd., 2011)Due to 3D occlusion, the specification of proper opacities in direct volume rendering is a time-consuming and unintuitive process. The visibility histograms introduced by Correa and Ma reflect the effect of occlusion by ... -
A Single Image Representation Model for Efficient Stereoscopic Image Creation
(The Eurographics Association and Blackwell Publishing Ltd., 2011)Computer graphics is one of the most efficient ways to create a stereoscopic image. The process of stereoscopic CG generation is, however, still very inefficient compared to that of monoscopic CG generation. Despite that ...