PURPOSE The purpose of this study was to evaluate the accuracy of a new version of the ExacTrac X-ray (ETX) system with statistical analysis retrospectively in order to determine the tolerance of systematic components of spatial uncertainties with the Novalis system. METHODS AND MATERIALS Three factors of geometrical accuracy related to the ETX system were evaluated by phantom studies. First,...

Change detection is one of the central problems in earth observation and was extensively investigated over recent decades. In this paper, we propose a novel recurrent convolutional neural network (ReCNN) architecture, which is trained to learn a joint spectral-spatial-temporal feature representation in a unified framework for change detection in multispectral images. To this end, we bring toget...

The notion that mental arithmetic is associated with shifts of spatial attention along a spatially organised number representation has received empirical support from three lines research. First, participants tend to overestimate results addition and underestimate those subtraction problems in both exact approximate formats. This been termed the oper...

The amount of information involved in hyperspectral imaging is large. Hyperspectral band selection is a popular method for reducing dimensionality. Several information based measures such as mutual information have been proposed to reduce information redundancy among spectral bands. Unfortunately, mutual information does not take into account the spatial dependency between adjacent pixels in im...

The paper explores cache strategies for multimedia. Although many architectural improvements have been designed for multimedia, the cache structure and the standard caching policies of general-purpose processors exhibit poor performance in exploiting the 2D spatial locality typical of programs handling and processing images. In this paper we propose a novel caching approach suitably tailored to...

This paper introduces an Information Theory-based method for modeling economic aggregates and estimating their sub-group (sub-area) decomposition when no individual or sub-group data are available. This method offers a flexible framework for modeling the underlying variation in sub-group indicators, by addressing the spatial dependency problem. A basic ecological inference problem, which allows...

background: although extensive development of technology provides welfare and accessibility for families but it may be one of the threatening factors for them. the unique characteristics of internet such as availability and facility are useful, but over using for its exciting content cause to internet addiction between family members. the aim of this study was to explain the experiences of the ...

EZW, a wavelet transformation based compression algorithm, utilizes the correlations of the wavelet coefficients between subbands. Due to the reason that, it is based on Zero Tree’s parent-descendant dependency of the subbands, subband coding is possible, but it is not efficient for applications, which require multiresolution restorations. In this paper we compare and analyze the performance be...