We show that using example-based photometric stereo, it is possible to achieve realistic reconstructions of the human face. The method can handle non-Lambertian reflectance and attached shadows after a simple calibration step. We use spherical harmonics to model and de-noise the illumination functions from images of a reference object with known shape, and a fast grid technique to invert those functions and recover the surface normal for each point of the target object. The depth coordinate is obtained by weighted multi-scale integration of these normals, using an integration weight mask obtained automatically from the images themselves.
We have applied these techniques to improve Shoes Nike FS Lite Run Women Mint Green Store
the PhotoFace system of Hansen et al. (2010).
A discrete crack finite element model of vertical and foundation joints of an arch dam is elaborated. Only tensile cracking due to persistent static loads is considered. A lower bound solution for the failure load is found which enables a sensible safety check for the structure. It is shown that both stiff foundation and high span/height ratio of dam could trigger the foundation interface cracking due to water and weight loads. Such cracks increase the hoop compressive stress, but substantially decrease the tensile stress in the dam body. Comparison with model test results is also presented. Furthermore it is shown that for double curvature arch dams the vertical joint opening Free 3.0 V4 Women Shoes Charcoal Green Comfy
induced by weight load, increases the radial displacements, and disintegrates the dam body.