Medical image registration is a difficult problem. Not only a registration algorithm needs to capture both large and small scale image deformations, it also has to deal with global and local image intensity variations...
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ISBN:
(纸本)9780769529967
Medical image registration is a difficult problem. Not only a registration algorithm needs to capture both large and small scale image deformations, it also has to deal with global and local image intensity variations. In this paper we describe a new multiresolution elastic image registration method that challenges these difficulties in image registration. To capture large and small scale image deformations, we use both global and local affine transformation algorithms. To address global and local image intensity variations, we apply an image intensity standardization algorithm to correct image intensity variations. this transforms image intensities into a standard intensity scale, which allows highly accurate registration of medical images.
the purpose of this work is to identify pollen grains from its sample images. Pollen grain recognition is used for the classification of the apiaria samples. In this paper we present an image retrieval technique that ...
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ISBN:
(纸本)0769513301
the purpose of this work is to identify pollen grains from its sample images. Pollen grain recognition is used for the classification of the apiaria samples. In this paper we present an image retrieval technique that is being applied to pollen grain identification, based on querying a database of reference neural networks.
Systems of image analysis constitute an important tool in studying wood and plant anatomy laboratory routines. these systems present significant advantages, i.e., speed, precision, and accuracy in relation to usual me...
ISBN:
(纸本)0769513301
Systems of image analysis constitute an important tool in studying wood and plant anatomy laboratory routines. these systems present significant advantages, i.e., speed, precision, and accuracy in relation to usual methods of cell element mensuration and quantification which depend on microscopes.
this work aims the implementation of the brazilian vehicle plate localization using imageprocessing techniques. In this paper, we present how to find the horizontal position of the plate based on its frequency charac...
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ISBN:
(纸本)076951846X
this work aims the implementation of the brazilian vehicle plate localization using imageprocessing techniques. In this paper, we present how to find the horizontal position of the plate based on its frequency characteristics in the whole vehicle image. Preliminary results show efficiencies above 96% for images in good illumination conditions.
this article presents a simple hierarchical adaptation of the Marching Cubes algorithm for polygonizing variational implicit surfaces used in modelling and reconstruction applications. the technique relies on placing ...
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ISBN:
(纸本)0769522270
this article presents a simple hierarchical adaptation of the Marching Cubes algorithm for polygonizing variational implicit surfaces used in modelling and reconstruction applications. the technique relies on placing the normal and boundary constraint points respecting a pseudo-Euclidean distance metrics. this procedure makes it possible to quickly prune the space and minimize the number of costly function evaluations and thus converge rapidly to the surface. Timings show that this technique tends to perform faster than Bloomenthal's continuation polygonizer [5].
We present a comparative study between two 3D morphing algorithms for polyhedral objects. A 3D morphing algorithm establishes a smooth transition between the source object and the target object. the two algorithms com...
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ISBN:
(纸本)0769513301
We present a comparative study between two 3D morphing algorithms for polyhedral objects. A 3D morphing algorithm establishes a smooth transition between the source object and the target object. the two algorithms compared are the one presented by Hong et al. [1] and the one presented by Kent et al. [2]. the main conclusion is that, in general, the latter algorithm delivers morphy sequences that look more natural.
In this paper we present a new method for painterly rendering of images. Our method extends the image-moment stroke placement algorithm in two ways: we employ a multiscale scheme for computing strokes and we provide a...
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ISBN:
(纸本)076951846X
In this paper we present a new method for painterly rendering of images. Our method extends the image-moment stroke placement algorithm in two ways: we employ a multiscale scheme for computing strokes and we provide a parametrized mechanism for controlling stroke distribution. In addition, we present a specialized image abstraction for the algorithm.
this work presents a simpler method to obtain fingerprint classification by mean of directional map smoothing developed in C++ programming language through statistical techniques. that strategy allows to extract attri...
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ISBN:
(纸本)0769513301
this work presents a simpler method to obtain fingerprint classification by mean of directional map smoothing developed in C++ programming language through statistical techniques. that strategy allows to extract attributes of an image to increase the quality because it is possible to reduce the noise if compared withthe result obtained by mean other method exposed in the literature.
We describe a data-driven motion simulation algorithm based on an affine image-matching equation. Solving such equation via the Green's function approach, we have obtained a pair of filters which, when applied ove...
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ISBN:
(纸本)0769522270
We describe a data-driven motion simulation algorithm based on an affine image-matching equation. Solving such equation via the Green's function approach, we have obtained a pair of filters which, when applied over an input image, allow the generation of virtual sequences that convey a compelling motion impression. Complex rigid and nonrigid motions have been simulated this way, such as those of a pulsating heart, a twig in the wind and a levitating ball.
Expression Transfer is a method for mapping a photographed expression performed by a given subject onto the photograph of another person's face. Building on well succeeded previous works by the vision researchers ...
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ISBN:
(纸本)0769526861
Expression Transfer is a method for mapping a photographed expression performed by a given subject onto the photograph of another person's face. Building on well succeeded previous works by the vision researchers (facial expression decomposition, active appearance models and multilinear analysis, we propose a novel approach for expression transfer based on color images. We attack this problem with methods developed by the computer vision community for facial expression analysis and recognition. Combining active appearance models and multilinear analysis, it's possible to suitably represent and analyze expressive facial images, while separating both style (subject's identity) and content (expressive flavor) from the captured performance.
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