191 Result(s)
within
English
Image Processing and Computer Vision
Ben Ep**er
Article
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Article
A Geometric Framework and a New Criterion in Optical Flow Modeling
We evaluate the dense optical flow between two frames via variational approach. In this paper, a new framework for deriving the regularization term is introduced giving a geometric insight into the action of a...
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A Statistical Overlap Prior for Variational Image Segmentation
This study investigates variational image segmentation with an original data term, referred to as statistical overlap prior, which measures the conformity of overlap between the nonparametric distributions of ima...
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Open AccessLeakage-Aware Multiprocessor Scheduling
When peak performance is unnecessary, Dynamic Voltage Scaling (DVS) can be used to reduce the dynamic power consumption of embedded multiprocessors. In future technologies, however, static power consumption du...
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Open AccessInstruction-Level Fault Tolerance Configurability
Due to modern technology trends such as decreasing feature sizes and lower voltage levels, fault tolerance (FT) is becoming increasingly important in computing systems. Several schemes have been proposed to en...
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Open AccessParallel Scalability of Video Decoders
An important question is whether emerging and future applications exhibit sufficient parallelism, in particular thread-level parallelism, to exploit the large numbers of cores future chip multiprocessors (CMPs...
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Watermarking 3D models using spectral mesh compression
We propose a robust and imperceptible spectral watermarking method for high rate embedding of a watermark into 3D polygonal meshes. Our approach consists of four main steps: (1) the mesh is partitioned into sm...
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General Geometric Good Continuation: From Taylor to Laplace via Level Sets
Good continuation is the Gestalt observation that parts often group in particular ways to form coherent wholes. Perceptual integration of edges, for example, involves orientation good continuation, a property whi...
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Multi-Spectral Imaging by Optimized Wide Band Illumination
We present a novel active imaging approach that uses optimized wide band filtered illumination to obtain multi-spectral reflectance information. Our optimization algorithm utilizes light source and camera spec...
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Open AccessRelating conversational expressiveness to social presence and acceptance of an assistive social robot
Exploring the relationship between social presence, conversational expressiveness, and robot acceptance, we set up an experiment with a robot in an eldercare institution, comparing a more and less social condi...
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Implementation of an LVQ neural network with a variable size: algorithmic specification, architectural exploration and optimized implementation on FPGA devices
This paper presents an optimizing methodology for the implementation of a Learning Vector Quantization (LVQ) neural network in a Field Programmable Gate Array (FPGA) device. Starting from an algorithmic specif...
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Compiling for Reduced Bit-Width Queue Processors
Embedded systems are characterized by the requirement of demanding small memory footprint code. A popular architectural modification to improve code density in RISC embedded processors is to use a reduced bit-...
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Analytic threshold calculation of frequency estimation for OFDM communication
In this paper, we introduce an improved expression for the normalized variance of a frequency offset estimator, which successfully estimates the actual behavior of the normalized variance of the frequency offs...
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One step at a time: animating virtual characters based on foot placement
Especially in a constrained virtual environment, precise control of foot placement during character locomotion is crucial to avoid collisions and to ensure a natural locomotion. In this paper, we present an ex...
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Video watermarking using wavelet transform and tensor algebra
We present a robust, hybrid non-blind MPEG video watermarking technique based on a high-order tensor singular value decomposition and the discrete wavelet transform (DWT). The core idea behind our proposed tec...
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Automatic recognition of woven fabrics based on texture and using SVM
This paper proposes the recognition and classification of three dominant patterns of woven fabrics such as twill, satin and plain. The proposed classifier is based on the texture analysis of woven fabric image...
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Xetal-II: A Low-Power Massively-Parallel Processor for Video Scene Analysis
A processor architecture combining high-performance and low-power is presented. A prototype chip, Xetal-II, has been realized in 90 nm CMOS technology based on the proposed architecture. Recent experimental re...
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Multivariate kernel diffusion for surface denoising
In this paper, we introduce a 3D mesh denoising method based on kernel density estimation. The proposed approach is able to reduce the over-smoothing effect and effectively remove undesirable noise while prese...
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3D facial expression recognition using SIFT descriptors of automatically detected keypoints
Methods to recognize humans’ facial expressions have been proposed mainly focusing on 2D still images and videos. In this paper, the problem of person-independent facial expression recognition is addressed usi...
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Reduction of musical residual noise using perceptual tools with classic speech denoising techniques
Single channel enhancement techniques based on short-time spectral amplitude (STSA) estimation have the major drawback of generating an artificial and annoying residual noise with musical character, due mainly...
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Reeb graph path dissimilarity for 3D object matching and retrieval
We introduce a skeletal graph for topological 3D shape representation using Morse theory. The proposed skeletonization algorithm encodes a 3D shape into a topological Reeb graph using a normalized mixture dist...
