A new system provides a virtual experience akin to trying on clothing. It clones the user's photographic image into a catalog of images of models wearing the desired garments. Simple offline training extracts the ...
详细信息
A new system provides a virtual experience akin to trying on clothing. It clones the user's photographic image into a catalog of images of models wearing the desired garments. Simple offline training extracts the user's head. Segmentation accurately separates the face, hair, and background, employing both a three-kernel statistical model and graph cuts. The system adjusts the resulting image's skin color according to a statistical model and relights the head via spherical harmonics. Finally, using a parametric model, the system warps the clone's body dimensions to fit the user's dimensions. This creates high-quality compositions of the user's image and the given garment.
Thumb-to-finger tap interaction can be employed to perform eyes-free, discrete, symbolic input in virtual and augmented reality environments. The DigiTap device is worn on the wrist to keep the hand free from any inst...
详细信息
Thumb-to-finger tap interaction can be employed to perform eyes-free, discrete, symbolic input in virtual and augmented reality environments. The DigiTap device is worn on the wrist to keep the hand free from any instrumentation so as not to impair tactile sense and dexterity. DigiTap senses the jerk that is caused by a tap and takes an image sequence to detect the tap location. The device can recognize taps at 12 different locations on the fingers, and at some positions, it can even distinguish between different tap strengths. The authors conducted an extended user study to evaluate users' abilities to interact with the device and perform symbolic input. [ABSTRACT FROM PUBLISHER]
Some of the recent developments in the automated design and analysis of digital systems are reviewed. Two new areas alluded to are centralized data base systems for design automation and interactive graphic computer-a...
详细信息
Some of the recent developments in the automated design and analysis of digital systems are reviewed. Two new areas alluded to are centralized data base systems for design automation and interactive graphic computer-aided design. The areas of gate level simulation, synthesis, partitioning, interconnection, and fault test generation are dealt with in more detail. New algorithms in each of these areas are presented and compared, and a few important unsolved problems are mentioned. Some of the systems, techniques, and/or algorithms discussed are: A. Gate level simulation; 1) fault list propagation, 2) three-valued simulation. B. Synthesis; 1) register transfer level, 2) logic gate level. C. Partitioning; 1) clustering algorithms, 2) functional partitioning via simulation. D. Interconnect; 1) path seeking algorithms, 2) Steiner's problem. E. Fault test generation; 1) D algorithm, 2) Boolean difference, 3) equivalent normal form, 4) extensions to sequential circuits.
We present an extension of the theory of graph rotation systems, which has been a widely used model for graph imbeddings on topological surfaces. The extended model is quite beyond what is needed to specify graph imbe...
详细信息
We present an extension of the theory of graph rotation systems, which has been a widely used model for graph imbeddings on topological surfaces. The extended model is quite beyond what is needed to specify graph imbeddings on surfaces, and it can be used to represent and generate link structures immersed on surfaces. Since link structures immersed on surfaces can be viewed as woven images in 3D space, the extended graph rotation systems provide a well-formulated mathematical model for developing a topologically robust graphics system with strong interactive operations for the design of woven images in 3D mesh-modeling and computer-aided sculpting. (C) 2015 Elsevier B.V. All rights reserved.
Classification of 3D objects - the selection of a category in which each object belongs - is of great interest in the field of machine learning. Numerous researchers use deep neural networks to address this problem, a...
详细信息
Classification of 3D objects - the selection of a category in which each object belongs - is of great interest in the field of machine learning. Numerous researchers use deep neural networks to address this problem, altering the network architecture and representation of the 3D shape used as an input. To investigate the effectiveness of their approaches, we conduct an extensive survey of existing methods and identify common ideas by which we categorize them into a taxonomy. Second, we evaluate 11 selected classification networks on two 3D object datasets, extending the evaluation to a larger dataset on which most of the selected approaches have not been tested yet. For this, we provide a framework for converting shapes from common 3D mesh formats into formats native to each network, and for training and evaluating different classification approaches on this data. Despite being partially unable to reach the accuracies reported in the original papers, we compare the relative performance of the approaches as well as their performance when changing datasets as the only variable to provide valuable insights into performance on different kinds of data. We make our code available to simplify running training experiments with multiple neural networks with different prerequisites.
In most real world contexts, decisions must be made in presence of multiple, conflicting, incommensurate criteria. This paper presents a computational tool aimed at providing decision aid in the evaluation of a finite...
详细信息
In most real world contexts, decisions must be made in presence of multiple, conflicting, incommensurate criteria. This paper presents a computational tool aimed at providing decision aid in the evaluation of a finite and explicitly known set of alternatives over several criteria. The system has been designed as an experimentation framework for helping analysts in the practice of decision aid, and it can be customized to specific decision situations. This decision support system (DSS) consists of a problem editor, a problem compiler, a set of multiple criteria decision aid (MCDA) methods, a dialogue base and a data management module. The DSS intends to make the most of a user-friendly computer interface in order to minimize the cognitive effort required from decision makers (DMs). The set of methods includes some representative discrete alternative MCDA methods, underlying different philosophies and strategies for selecting, clustering or ranking the alternatives. Some features of this DSS will be illustrated by considering a case study of evaluation of alternative power generation expansion policies.
The Erlangen graphics System (ERLGRAPH) is a high level application layer to the Graphical Kernel System (GKS). It is available as a FORTRAN subroutine library, which has been developed at Regionales Rechenzentrum Erl...
详细信息
The Erlangen graphics System (ERLGRAPH) is a high level application layer to the Graphical Kernel System (GKS). It is available as a FORTRAN subroutine library, which has been developed at Regionales Rechenzentrum Erlangen (RRZE). The RRZE, the regional computer center Erlange, is a university computer center with customers not limited to the university of Erlangen-Nuernberg, but also from universities and engineering schools within a diameter of approximately 120 km around Erlangen. The main subjects are distributed graphics at RREZ and ERLGRAPH spool systems.
We show that by a combination of adaptive finite-element (FEM) and boundary-element methods (BEM) as well as algorithms from computer graphics it is possible to do effective 3-D simulations of heat transfer in industr...
详细信息
We show that by a combination of adaptive finite-element (FEM) and boundary-element methods (BEM) as well as algorithms from computer graphics it is possible to do effective 3-D simulations of heat transfer in industrial high-temperature furnaces with vacuum chambers including heat conduction and heat radiation in enclosures. To do this, we develop a flexible and effective coupling scheme to connect the volume temperature distribution with the surface temperature distribution and allow for independent grid refinement of the volume and surface mesh. Both refinements relay on an error estimator, one for the radiation and the other for the conduction.
A simple algorithm is given for the construction of a linear nearly area-preserving approximation of skew ruled surfaces. It bases on the striction and the curvature of the skew surface.
A simple algorithm is given for the construction of a linear nearly area-preserving approximation of skew ruled surfaces. It bases on the striction and the curvature of the skew surface.
暂无评论