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In this paper, we have hybridized the three main techniques of Content Based Image Retrieval (CBIR) in order to increase the efficiency and precision of the images which are retrieved. Firstly, the color quantization of the image is done with the help of ColorCorrelogram Vector. The spatial arrangement of the color pixel is also determined by the colorcorrelogram. Then, the shape and texture of the...
A global scheme combining intensity and stereo data to improve urban landscapes modeling from aerial or satellite stereopairs is presented. Both intensity and stereo data are used for building detection, recognition and scene reconstruction. Grey-level intensity data features are used to improve the quality of depth maps stereo processing and depth maps features are used to improve monocular analysis...
In this work, we consider the problem of tracking markers in sequences of images for the human movement analysis. The images are captured from a common CCD camera in a non-supervised environment. As we will see, the image processing chain consists mainly of morphological segmentation, prediction, and matching operations.
This work presents an integrated system for progressive and predictive image sequences coding and human body movement tracking. The object shape representation, based on the morphological skeleton, is used for both coding and tracking and it allows achieving a high compression ratio. Kalman Filters are used to track the shape of the human body. Practical applications of the focused proposed strategy...
Recently, it has been shown that structural connectivity patterns derived from diffusion MRI (dMRI) can be used for cortical parcellation and segmentation. However, most previous methods were based on diffusion tractography, which is limited in depicting local profiles, e.g., in regions beneath the cortical sulcal fundi. Instead, in this paper, we propose to derive effective features directly from...
An intrinsic issue of large-array beamforming and signal processing in random-inhomogeneous environments is known to be considerable degradation of signal coherence in space domain. Such a scenario arises in many applications, and array operations in underwater sound channels with emphasis on long-range sound propagation is one of the most typical cases. Another key issue is here the multimode propagation...
The Square Kilometre Array (SKA) will form the largest radio telescope ever built and such a huge instrument in the desert poses enormous engineering and logistic challenges. Algorithmic and architectural breakthroughs are needed.
In this paper, the pulse shape design for various communication systems including PAM, FSK, and PSK is considered. The pulse is designed by imposing constraints on the time and frequency domains constraints on the autocorrelation function of the pulse shape. Intersymbol interference, finite duration and spectral mask restrictions are a few examples leading to convex sets in L2. The autocorrelation...
In ultra-wideband (UWB) communication systems, the time hopped (TH) transmitted reference scheme with multiple autocorrelation sampling detection (TR-MAS) enables the receiver to obtain and capture the received signals autocorrelation side lobe energy while increasing multi-user capacity. The bit error rate (BER) performance of several pulse design methods that meet the federal communications commission...
Fingerprint is most important and widely used biometrics trait for identification. However, the fingerprint identification is still a challenging task in forensic science for criminal investigation and identification due to less area of region of interest (i.e.ridges and valleys) in the obtained fingerprints. Entire fingerprint is obtained only when it is given intentionally. But, in the case of criminal...
Nowadays, left continuous-flow assist devices (LVAD) are used for the treatment of end-stage heart failure not only as bridge to transplantation but also as a destination therapy. For this reason, LVAD patients monitoring is of large interest, especially for the understanding of ventricular loading condition and its interaction with the assist device. Aim of this work is the investigation of possible...
Vocal tract is one of most important system in speech production and it begins at the glottis and ends at the lips. Vocal tract shape (VTS) is defined as varying cross sectional area from glottis-to-lips. Based on literature review it is noted that most of the research work carried out on vocal tract shape estimation (VTSE) is based on Wakita's algorithm which is based on autocorrelation of speech...
This paper proposes a method for contour completion of a skew-symmetry object which is partly occluded by other objects. The proposed method assumes that skew symmetry of a shape can be measured by correlation with its reflection on a no orthogonal plane. Under the assumption, the method estimates a skew-symmetry axis and a skew transverse angle, and then reflects the contour to the estimated axis...
Despite advances in fingerprint matching, partial/incomplete/fragmentary fingerprint recognition remains a challenging task. While miniaturization of fingerprint scanners limits the capture of only part of the fingerprint, there is also special interest in processing latent fingerprints which are likely to be partial and of low quality. Partial fingerprints do not include all the structures available...
A plutonium metal sample was measured by a fast-neutron multiplicity counter for characterization of spontaneous fission neutron anisotropy and for verification of MCNPX-PoliMi calculations. Accurate neutron angular distribution models are important to properly simulating fast neutron coincidence measurements for nuclear nonproliferation and safeguards applications. A majority of prompt neutrons are...
The reduced availability of 3He is a motivation for developing alternative neutron detectors. 6Li-enriched CLYC (Cs2LiYCl6), a scintillator, is a promising candidate to replace 3He. The neutron and gamma ray signals from CLYC have different shapes due to the slower decay of neutron pulses. Some of the well-known pulse shape discrimination techniques fail to produce the desired results in a mixed radiation...
Silicon microstrips are widely used in nuclear physics experiments when high granularity and high resolution of the detection system is required, as, for example in particle-particle correlation measurements. In addition microstrip detectors are used in the field of X-ray detection for position resolved X-ray spectroscopy. In order to surgically probe the response of the interstrip region we tested...
This paper directly compares sea clutter data gathered from two separate radar systems, Ingara from the Defence Science and Technology Organisation (DSTO) Australia and Fynmeet from the Council for Scientific and Industrial Research (CSIR), South Africa. The key quantitative difference explored in this paper is the difference in grazing angle, which is moderately high (15° – 46°) for the Ingara data...
In this paper, a novel method is proposed for the Traffic Sign Recognition (TSR) using the Principle Component Analysis (PCA) and the Multi-Layer Perceptrons (MLPs) network. In particular, the candidate signs are individually detected from two chroma components in the YCbCr space and then classified into three shape classes: circle, square, and triangle based on computing the rotated version correlations...
A method for simulating coherent sea clutter has been adapted for Pareto distributed clutter by using an inverse gamma distribution for the local clutter intensity. The model is applied to the range variation of Doppler spectra from Pareto distributed clutter collected at grazing angles of 31°–37° with the DSTO Ingara radar. The model produces Doppler spectra with a Gaussian shape that vary with range...
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