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Congenital heart disease is the most common birth defect, with an incidence of 75 in every 1000 births. As a result of improved interventions, 90% of people with congenital heart disease now survive to adulthood. They must undergo regular imaging to assess their biventricular (left and right ventricular) function. Analysis of the images is problematic due to the large variety of shapes and complex...
Security issues are important concerns of image hashing. A type of image hashing needs to randomly divide a given image into several parts, usually rectangles. However, the security problem arises due to the rectangular shapes. So, we propose a new method which enhances the randomness by dividing the image into zigzag blocks with random walk. Security analyses are provided, and experiments show our...
Partial fingerprints are likely to be fragmentary or low quality, which mandates the development of accurate fingerprint verification algorithms. Two fingerprints should be aligned properly, in order to measure the similarity between them. Moreover, the common fingerprint recognition methods (minutiae-based) only use the limited information that is available. This affects the reliability of the output...
Fractal surface modeling methods that provide effective and spatially continuous information over natural object surfaces and parts surfaces of precise manufacturing have become increasingly important in monitoring the features of the natural images and refinement of industrial manufacturing techniques. Numerous fractal methods have been generated during the last decades, but they differ substantially...
Nowadays surveys are common data source for empirical research in marketing, social sciences, and official statistic. Such studies often focus on correlation analysis. Survey questions typically have answer scales and collect ordered-categorical data. For this type of data a great way to measure association is to estimate polychoric correlation coefficient. It standardly assumes bivariate normal distribution...
Nowadays, the uses of reusable materials can be seen everywhere. Plastic material is one of the most popular recycled products, particularly plastic bottles made of PET (Polyethylene Terephthalate) and non-PET. Classification of plastic bottle types is necessary and is the first step for plastic bottles recycling processes. Thus, this paper presents multiple correlation method for classifying types...
The works presented by the authors at MECO-2013 – MECO-2015 conferences as well as the other works considered the components of image superimposition techniques in computer vision systems with different degree of detail. In this paper for the first time a complete description of the automatic image superimposition technique is provided. This technique is suitable for the images both of a similar and...
A non-repeating FMCW waveform was recently developed and experimentally demonstrated to provide a feasible instantiation of FM noise radar. This emission scheme was subsequently examined in terms of the impact of both stationary and hopped spectral gaps with the prospect of enabling in-band interference avoidance for cognitive sensing and possibly tandem hopped radar/communications. Here this gap-hopped...
Bimaterial interfaces, like the one consisting of epoxy mold compound (EMC) cured over copper leadframe, are commonly present in microelectronic packages. Failure in such bimaterial interfaces can be simulated through the use of cohesive zone modeling (CZM). To date, nearly all CZM modeling of bimaterial interfaces has been performed for monotonic loading conditions. However, most of the interfacial...
A Minkowski fractal shape patch antenna covering terrestrial wireless services is presented for multiple-input-multiple-output implementation. The proposed structure is minimized upto two iteration operated at 10GHz. The end to end separation between the two antennas is 4.9mm The existence of surface waves is reduced using two inverted T and slot structure respectively, which is etched in between...
This work explores the nature of warping path and the shape of the gross spectrum for speaker information in text-dependent speaker verification under degraded condition. The nature of warping path is observed to follow a similar trend for given speaker across different sessions, due to the style of spoken delivery. The deviation of the warping path from the diagonal is taken as feature for discrimination...
The application of correlation filters for the task of facial landmark detection has been studied by many vision works. Their success, however, is limited by the presence of large pose variations, expression and occlusion in face images. Moreover, existing correlation filters may suffer from poor discrimination to distinguish visually similar landmarks such as the right and left eyes. In this work,...
This paper proposes a simple but efficient shape regression method for face alignment using an ensemble of random ferns. First, a classification method is used to obtain several mean shapes for initialization. Second, an ensemble of local random ferns is learned based on the correlation between the projected regression targets and local pixel-difference matrix for each landmark. Third, the ensemble...
A method for spotting specific words in sign language video is proposed. In classes and talks given using Japanese Sign Language, words that do not have a defined sign, such as the names of people, objects, and places, are represented by sets of multiple characters from the Japanese finger alphabet. The difficulty of recognizing these words has created strong demand for the ability to spot specific...
This paper turns on blotches detection in archived video. Blotches could be considered as the most common artifacts in archived video. This type of artifacts is not temporally correlated, it can be considered as impulse noise in time. To detect blotches, the proposed approach is performed into two mains steps: blotch regions candidate extraction and classification of these regions as blotches or not...
Lag windowing has long been used for the autocorrelation method of linear predictive (LP) analysis to prevent possible instability of the synthesis filter with the obtained coefficients. We have investigated the lag-window shape in terms of the trade-offs between stability and the coding efficiency. On the basis of these investigations, we have devised an adaptive selection scheme in which the window...
The purpose of this article is to explore the impact of different plan form of circulation systems on spatial information processing and orientation abilities of newcomers in unfamiliar large-scale commercial environments. Two shopping malls in Beijing were chosen to apply the same field experiments, which were in the same conditions except different types of circulation systems— one with multi-atriums...
In this paper, we present a new method to sketch the common among several images. Our method captures rotation invariance by extending the local self descriptor to rotation invariance and proposes a easy method to detect a roughly similar region across the images. Our method is composed of three stages: (i) Detecting a similar region which the proportion of the common is as large as possible across...
Most of the traditional sketch-based image retrieval systems compare sketches and images using morphological features. Since these features belong to two different modalities, they are compared either by reducing the image to a sparse sketch like form or by transforming the sketches to a denser image like representation. However, this cross-modal transformation leads to information loss or adds undesirable...
In this paper, we intend to propose a new method to incorporate geometric shape prior into an edge-based active contours for robust object detection in presence of partial occlusions, low contrast and noise. A shape registration method based on phase correlation of binary images, associated with level set functions of the active contour and a reference shape, is used to define prior knowledge making...
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