We present a new method for enhancing images of blood vessels in skin tissues by using tri-band illumination. Transmitted-light vein images captured by a camera contain an image blur due to light scattering in skin. The blur can be described by a point spread function (PSF) that is a function of the thickness of skin layers in front of a vein and the extinction coefficients of skin tissues. The...

An increasing number of injectable filler materials for facial wrinkles and folds points to the need for objective measurements of their effectiveness. Patient satisfaction is the goal, but proof of the value of a particular product requires objective measurement. A wrinkle assessment scale was developed as a simple tool for use by plastic surgeons, dermatologists, and aesthetic surgeons who wa...

Acute ultraviolet (UV)-B irradiation causes skin wrinkle formation associated with hyperplasia of cutaneous blood vessels. This study reports that increased dermal oxygen tension attenuates acute UVB-induced angiogenesis and wrinkle formation. Twenty-four hairless mice (HOS:HR-1) were assigned to 3 groups: 1) control group, 2) UVB-irradiated (UVB) group, and 3) UVB-irradiated and hyperoxia-expo...

A stressed thin film on a soft substrate can develop complex wrinkle patterns. The onset of wrinkling and initial growth is well described by a linear perturbation analysis, and the equilibrium wrinkles can be analyzed using an energy approach. In between, the wrinkle pattern undergoes a coarsening process with a peculiar dynamics. By using a proper scaling and two-dimensional numerical simulat...

This paper presents an energy-based approach that models the distinct wrinkle shapes to represent the different material properties of non-rigid objects at an interactive speed. Our approach is a curve driven technique, where the surface wrinkles are generated by deforming the given mesh surface according to the shape change of a governing curve on the surface. An energy function is defined on ...

On length scales from nanometres to metres, partial adhesion of thin films with substrates generates a fascinating variety of patterns, such as 'telephone cord' buckles, wrinkles, and labyrinth domains. Although these patterns are part of everyday experience and are important in industry, they are not completely understood. Here, we report simulation studies of a previously-overlooked phenomeno...