Volume 23, Number 2 (2015) Domovská stránka kolekce Zobrazit statistiky

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Yang, Bingxin , Yuan, Min , Ma, Yide , Zhang, Jiuwen
Magnetic resonance images reconstruction using uniform discrete curvelet transform sparse prior based compressed sensing

Compressed sensing(CS) has shown great potential in speeding up magnetic resonance imaging(MRI) without degrading images quality. In CS MRI, sparsity (compressibility) is a crucial premise to reconstruct high-quality images from non-uniformly undersampled k-space measurements. In this paper, a ...

Weier, Martin , Hinkenjann, André , Slusallek, Philipp
A unified triangle/voxel structure for GPUs and its applications

We present a system that combines voxel and polygonal representations into a single octree acceleration structure that can be used for ray tracing. Voxels are well-suited to create good level-of-detail for high-frequency models where polygonal simplifications usually fail due to the&#...

Úvodní strany

Sultana, Madeena , Polash Paul, Padma , Gavrilova, Marina
Occlusion detection and index-based ear recognition

Person recognition using ear biometric has received significant interest in recent years due to its highly discriminative nature, permanence over time, non-intrusiveness, and easy acquisition process. However, in a realworld scenario, ear image is often partially or fully occluded by ...

Sörös, Gábor , Münger, Severin , Beltrame, Carlo , Humair, Luc
Multiframe visual-inertial blur estimation and removal for unmodified smartphones

Pictures and videos taken with smartphone cameras often suffer from motion blur due to handshake during the exposure time. Recovering a sharp frame from a blurry one is an ill-posed problem but in smartphone applications additional cues can aid the solution. We propose ...

Ramirez Orozco, Raissel , Loscos, Céline , Martin, Ignacio , Artusi, Alessandro
Multiscopic HDR image sequence generation

Creating High Dynamic Range (HDR) images of static scenes by combining several Low Dynamic Range (LDR) images is a common procedure nowadays. However, 3D HDR video acquisition hardware barely exist. Limitations in acquisition, processing, and display make it an active, unsolved r...

Nysjö, Johan , Malmberg, Filip , Sintorn, Ida-Maria , Nyström, Ingela
BoneSplit - a 3D texture painting tool for interactive bone separation in CT images

We present an efficient interactive tool for separating collectively segmented bones and bone fragments in 3D computed tomography (CT) images. The tool, which is primarily intended for virtual cranio-maxillofacial (CMF) surgery planning, combines direct volume rendering with an interactive ...

Mukovskiy, Albert , Land, William M. , Schack, Thomas , Giese, Martin A.
Modeling of predictive human movement coordination patterns for applications in computer graphics

The planning of human body movements is highly predictive. Within a sequence of actions, the anticipation of a final task goal modulates the individual actions within the overall pattern of motion. An example is a sequence of steps, which is coordinated with the graspin...

Angelelli, Paolo , Bruckner, Stefan
Performance and quality analysis of convolution-based volume illumination

Convolution-based techniques for volume rendering are among the fastest in the on-the-fly volumetric illumination category. Such methods, however, are still considerably slower than conventional local illumination techniques. In this paper we describe how to adapt two commonly used strategies&#...

Ahmed, Faisal , Polash Paul, Padma , Gavrilova, Marina L.
Kinect-based gait recognition using sequences of the most relevant joint relative angles

This paper introduces a new 3D skeleton-based gait recognition method for motion captured by a low-cost consumer level camera, namely the Kinect. We propose a new representation of human gait signature based on the spatio-temporal changes in relative angles among different skelet...

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