The processing and analysis of trajectories are the core of many location-based applications and services, while trajectory similarity is an essential concept regularly used. To address the time-consuming problem of similarity query, an efficient algorithm based on Fréchet distance called Ordered Coverage Judge (OCJ) is proposed, which could realize the filtering query with a given Fréchet dist...

The number plate recognition system is one kind of an Intelligent Transport System. The proposed work is used to extract numbers from the number plate. This technology is used in various security purposes for finding stolen cars, traffic management system, in electronic toll collection, smuggling of cars, usage of cars in terrorist attacks and illegal activities. This work is based on edge dete...

An efficient hierarchical 3-D spatiotemporal subband decomposition scheme using mathematical morphology is proposed in this paper~ It can support a hierarchy of video standards including both progressively scanned and interlaced signals. The compatibility among different video and distribution standards is increasingly important because of a multitude of video and multimedia services within bro...

Mathematical Morphology is a common strategy for non-linear filtering of image data. In its traditional form the filters used, known as structuring elements, have constant shape once set. Such rigid structuring elements are excellent for detecting patterns of a specific shape, but risk destroying valuable information in the data as they do not adapt in any way to its structure. We present a nov...

This paper presents the results of research on the effectiveness of different filtering methods dedicated to speckle suppression in SAR images. The tests were performed on RadarSat-2 images and on an artificial image treated with simulated speckle noise. The research analysed the performance of particular filters related to the effectiveness of speckle suppression and to the ability to preserve...

Both habitat filters and spatial processes can influence community structure. Space alone affects species immigration from the regional species pool, whereas habitat filters affect species distribution and inter-specific interactions. This study aimed to understand how the interplay between environmental and geographical processes influenced the structure of Neotropical snake communities in dif...

With the development of intelligent surveillance systems, the need for accurate detection of pedestrians by cameras has increased. However, most of the previous studies use a single camera system, either a visible light or thermal camera, and their performances are affected by various factors such as shadow, illumination change, occlusion, and higher background temperatures. To overcome these p...

JENKINS, J.M., ET AL.: Impact of FiItering Upon Ventricular Tachycardia Identification by Correlation Waveform Analysis. Signal analysis of digitized waveforms has been postulated as a method for improving sensitivity and specificity of ventricular tachycardia (VT) detection in implantable antitachycardia devices. Such improvement may alleviate the problem of unwarranted delivery oftherapy by a...

Nowadays, signal processing is integrated into most systems for analyzing and interpreting ECG PCG signals. Its objectives are multiple mainly include compensating the addition of artifacts to signals interest, extracting information that not visible by direct visual analysis. Considering useful clinical found in characteristic waves ECG, particular, P wave, QRS complex, T wave heart sounds sig...

social networks play a significant role in today world. these sites affect different aspects of individual and social life of people and the national and even international levels. accordingly, they are spreading, and will play more important role in the future life. this paper aims to examine the positive and negative effects of social networks’ filtering, that creates curiosity and has invers...