Many biomedical applications require accurate non-rigid image registration that can cope with complex deformations. However, popular diffeomorphic Demons algorithms suffer from difficulties for and serious distortions since they only use greyscale gradient information. To address these difficulties, a new algorithm is proposed using hierarchical neighbourhood spectral features namely HNSF Log-D...

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BACKGROUND The accurate measurement of daily mobility and travel to destinations beyond the residential neighbourhood has been identified as an important but almost systematically overlooked factor when investigating the relationship between exposure to the built environment and physical activity. The recent development of VERITAS - a web-based application nested within a computer-assisted pers...

BACKGROUND The association of social capital with health and mortality is contentious, and empirical findings are inconsistent. This study tests the association of neighbourhood-level volunteerism with mortality. METHODS Cohort study of 1996 New Zealand census respondents aged 25-74 years (4.75 million person years) using multilevel Poisson regression analyses. Neighbourhood (average populati...

BACKGROUND A burgeoning literature links attributes of neighbourhoods' built environments to residents' physical activity, food and transportation choices, weight, and/or obesity risk. In cross-sectional studies, non-random residential selection impedes researchers' ability to conclude that neighbourhood environments cause these outcomes. METHODS Cross-sectional data for the current study are...

The basic data unit of image representation, the pixel and encompassing features, form the key for the qualitative and quantitative output of any image processing step. The result of grouping pixels exhibiting similar features within local or global neighbourhood is termed as SUPERPIXEL. Computer vision research experts have conceptualised SUPERPIXEL for many decades and contributed number of s...

The proportion of people living in densely built up areas is gradually increasing, forcing cities to generate new land to build homes upon. In this process there is a risk for an inexplicit decrease of green space. The green features of neighbourhoods help to create a supportive environment for health and physical activity, thus a reduction of greenness may reduce the general well-being in the ...

The literature reports an association between neighbourhood deprivation and individual depression after adjustment for individual factors. The present paper investigates whether vulnerability to neighbourhood features is influenced by individual "activity space" (i.e., the space within which people move about or travel in the course of their daily activities). It can be assumed that a deprived ...