Sufficient image quality is a necessary prerequisite for reliable automatic detection systems in several healthcare environments. Specifically for Diabetic Retinopathy (DR) detection, poor quality fund us makes more d...
详细信息
Video transition detection is an early step towards its high level segmentation and indexing. the visual rhythm is a technique used for reducing the amount of data in a video: it transforms a 3D data set (a time seque...
详细信息
Video transition detection is an early step towards its high level segmentation and indexing. the visual rhythm is a technique used for reducing the amount of data in a video: it transforms a 3D data set (a time sequence of 2D frames) into a single 2D image. then, we can search for patterns in the 2D image corresponding to transitions in the initial video. the concept of longest common subsequence of a string is used to transform the 2D image into a 1D signal. Further, transition detection is performed using this 1D signal whose simpler and reduced representation leads to the definition of fast algorithms identifying the different transitions.
the proceedings contain 26 papers. the topics discussed include: instruction set extension for long integer modulo arithmetic on RISC-based smart cards;architecture of oscillatory neural network for image segmentation...
ISBN:
(纸本)0769517722
the proceedings contain 26 papers. the topics discussed include: instruction set extension for long integer modulo arithmetic on RISC-based smart cards;architecture of oscillatory neural network for image segmentation;parallel boundary elements using Lapack and ScaLapack;efficient cyclic weighted reference counting;a parallel approximation hitting set algorithm for gene expression analysis;implementing declarative parallel bottom-avoiding choice;minimally-skewed-associative caches;a framework for exploiting adaptation in highly heterogeneous distributed processing;cluster-based static scheduling: theory and practice;the virtual cluster: a dynamic environment for exploitation of idle network resources;and design and evaluation of data access prediction strategies in SDSM systems.
Because of their storage conditions, old movies may present different defect types of different shapes and sizes. We propose a method for old movie restoration using opening by surface which eliminates image informati...
详细信息
Because of their storage conditions, old movies may present different defect types of different shapes and sizes. We propose a method for old movie restoration using opening by surface which eliminates image information by area attribute, independent of the shape of its components.
the algorithm radial flow model can generate a 3D closed triangular mesh which fits an unregistered range image. though complex meshes may be produced, they are restricted to be homeomorph to spheres. We present some ...
详细信息
the algorithm radial flow model can generate a 3D closed triangular mesh which fits an unregistered range image. though complex meshes may be produced, they are restricted to be homeomorph to spheres. We present some ideas that may overcome this constraint.
Ambient occlusion is a low-cost technique to simulate indirect ambient illumination in a realistic way. the goal is to estimate the amount of incident ambient light at each visible point. In this paper, we propose a n...
详细信息
the paper presents a simple and robust algorithm for estimating the local geometric properties of intersection curves, namely the tangent, normal, binormal, curvature and torsion vectors at any point. In addition, two...
详细信息
the paper presents a simple and robust algorithm for estimating the local geometric properties of intersection curves, namely the tangent, normal, binormal, curvature and torsion vectors at any point. In addition, two new marching directions that make use of these properties are given.
the aim in this paper is to explore whether the Fisher-Rao metric can be used to characterise the shape changes due to gender difference. We work using a 2.5D representation based on facial surface normals (or facial ...
详细信息
Mapper is a topological construction similar to a Reeb graph, and is used to summarize the shape of a dataset as a (generalized) graph. Formally, mapper can be constructed for any connected space and algorithms have b...
详细信息
ISBN:
(纸本)9783030208677;9783030208660
Mapper is a topological construction similar to a Reeb graph, and is used to summarize the shape of a dataset as a (generalized) graph. Formally, mapper can be constructed for any connected space and algorithms have been developed to compute mapper for point clouds and 2D images. In this paper, we extend mapper to 3D volumetric images. We use our algorithm to compute mapper for scans of barley generated using computed tomography. We demonstrate the flexibility of the construction by highlighting different aspects of the morphology through different choices of starting parameters. Applying mapper to this type of data provides an integrated means of visualization, segmentation and clustering, and can thus be used to study the topology of any 3D object.
Studies the advantages and disadvantages of fractal image compression (FlC) compared to wavelet transform compression (WTC). Our results indicate that there is an advantage in FIC for high compression ratios when we t...
详细信息
Studies the advantages and disadvantages of fractal image compression (FlC) compared to wavelet transform compression (WTC). Our results indicate that there is an advantage in FIC for high compression ratios when we take the image quality into account. Considering the compression speed we have a significant difference, which indicates that WTC is much faster than FIC.
暂无评论