In this paper, we propose an improved photometric stereo scheme based on the Lambertian reflectance model and the constrained independent component analysis (cICA) method. When we obtain an object’s surface normal vector on each point of an image using the ICA model to reconstruct 3D shapes, we find that the x-axis, y-axis and z-axis values of the normal vector’s coordinates are not arranged in...

OBJECTIVE To aggregate data across institutions to identify, characterize, and differentiate potential survivors from nonsurvivors based on etiology of event. AIM To evaluate the association of the cardiopulmonary resuscitation (CPR) duration and probability of survival (Ps), stratified by etiology of arrest. BACKGROUND In-hospital cardiac arrests occur in 2-6% of pediatric patients with po...

BACKGROUND The calculation of arterial oxygen saturation (SpO2) relies heavily on the amplitude information of the high-quality photoplethysmographic (PPG) signals, which could be contaminated by motion artifacts (MA) during monitoring. METHODS A new method combining temporally constrained independent component analysis (cICA) and adaptive filters is presented here to extract the clean PPG si...

Wyner’s common information is a measure that quantifies and assesses the commonality between two random variables. Based on this, we introduce novel two-step procedure to construct features from data, referred as Common Information Components Analysis (CICA). The first step can be interpreted an extraction of information. second form back-projection onto original variables, leading extracted fe...

BACKGROUND AND PURPOSE The management of intracranial pseudoaneurysms is controversial. The purpose of this study was to provide a preliminary evaluation of the clinical efficacy of a Willis covered stent specially designed for the intracranial vasculature in the management of a pseudoaneurysm of the cranial internal carotid artery (CICA). MATERIALS AND METHODS Eight patients with pseudoaneur...

Introduction: Image registration of fMRI data only corrects for bulk movements while leaving secondary artifacts such as, spin history effects, motion induced dynamic field inhomogeneity changes, and interpolation errors untouched. Secondary artifacts increase variability in time-series and reduce sensitivity of activation detection. Methods such as the use estimated motion parameters as “Nuisa...

BACKGROUND Nigeria continues to have high rates of maternal morbidity and mortality. This is partly associated with lack of adequate obstetric care, partly with high risks in pregnancy, including heavy work. We examined actionable risk factors and underlying determinants at community level in Bauchi and Cross River States of Nigeria, including several related to male responsibility in pregnancy...

Recently the constrained ICA (cICA) algorithm has been widely applied to many applications. But a crucial problem to the algorithm is how to design a reference signal in advance, which should be closely related to the desired source signal. If the desired source signal is very weak in mixed signals and there is no enough a priori information about it, the reference signal is difficult to design...