3-D tracking of free-moving objects has to deal with brightness variations pronounced by the shape of the tracked surface. Pixel-based tracking techniques, though versatile, are particularly affected by such variations. Here, we evaluate two illumination-adaptive methods for a novel efficient pixel-based 3-D tracking approach. Brightness adaption by means of an illumination basis is compared to...

Improving the availability of information technology and increasing volume digital traffic leads to an important problem data protection. A particularly pressing issue is transmitting confidential through unsecured communication channels, such as Internet. Recently, there has been a significant increase in number cyberattacks, including attempts intercept steal transmitted global networks. Info...

In a visual cryptography scheme, a secret image is encoded into n shares, in the form of transparencies. The shares are then distributed to n participants. Qualified subsets of participants can recover the secret image by superimposing their transparencies, but non-qualified subsets of participants have no information about the secret image. Pixel expansion, which represents the number of subpi...

Methods 27 subjects (17 male; age 62 ± 11 years) with coronary artery disease as defined by quantitative coronary angiography were included in this study. Greater than 70% luminal coronary stenosis of the major epicardial coronaries was present in 2/3 of the subjects. Perfusion imaging was performed using a saturation recovery steadystate free precession dual-sequence method at 1.5 T during Reg...

A simple, efficient algorithm is presented for super-resolution target mapping from remotely sensed images. Following an initial random allocation of pixel proportions to binary 'hard' sub-pixel classes, the algorithm works in a series of iterations, each of which contains two stages. For each iteration, a distance weighted function of neighbouring pixels is computed for all sub-pixels. Then, o...

With the rapid development of RS and more mature and the precision of number of field surveys on the basis of Quick-Bird remote sensing data through visual interpretation of urban public green vegetation diversity survey the exits of mixed. Pixel mixed is one important factor of influence accuracy of Remote sensing image classification. In this article, combine genetic algorithm with BP propaga...

In this paper, we have proposed a novel method of image representation on quantum computers. The proposed method uses the two-dimensional quantum states to locate each pixel in an image matrix with the normalized amplitude values of the image signal being coefficients of the quantum states. The two-dimensional quantum states are linear superposition of outer product of m-qubits row-location vec...

UNLABELLED Serotonergic 5-hydroxytryptamine-1A (5-HT1A) receptors are of interest in the pathophysiology of several neuropsychiatric disorders such as anxiety, depression and schizophrenia. [Carbonyl-11C]WAY-100635 has recently been shown to be suitable for quantitative determination of 5-HT1A receptors in the human brain using PET. For group comparisons of neuroreceptor distribution on a pixel...

The quantification of blood oxygenation-level dependent (BOLD) functional MRI (fMRI) signals is closely related to cerebral blood flow (CBF) change; therefore, understanding the exact relationship between BOLD and CBF changes on a pixel-by-pixel basis is fundamental. In this study, quantitative CBF changes induced by neural activity were used to quantify BOLD signal changes during somatosensory...