A Silhouette Based Technique for the Reconstruction of Human Movement

Temporal motion models for monocular and multiview 3D human body tracking

“…People tracking is comparatively simpler if multiple calibrated cameras can be used simultaneously. Techniques such as space carving [12,13], 3D voxel extraction from silhouettes [14], fitting to silhouette and stereo data [15][16][17], and skeleton-based techniques [18,19] have been used with some success. If camera motion and background scenes are controlled, so that body silhousttes are easy to extract, these techniques can be very effective.…”

“…In our implementation, this cost is roughly proportional to 1 + log(D) times the cost of computing F t alone, where D is the number of joint angles of (12). The reason this factor grows slowly with D is that the partial derivatives, ∂Ft ∂θ j , which require most of the computation, are computed analytically and involve many intermediate results than can be cached and reused.…”

3D shape estimation based on density driven model fitting

“…A typical hierarchy of resolutionincreasing volume reconstructions is shown in Þg. 4. Each level is represented by an octree.…”

“…Bottino and Laurentini [4] utilize rapid volumetric reconstructions and build a piecewise linear approximation to the human body surface. This technique models the body by approximating the body surface, but does not use the volumetric aspect of the precomputed reconstructions.…”

La valoración funcional. Aplicaciones en el ámbito de la discapacidad y el daño corporal. Modelo de transferencia tecnológica de laboratorios de valoración de la discapacidad y del daño corporal

“…Algunos de lo más generalizados son los basados en modelos estadísticos (Wren, CR., et al, 1997), contorno de siluetas (Bottino et al, 2001, Cheung et al, 2003 o los basados en el filtrado de partículas (Deutscher et al, 2000). JOSÉ DAVID GARRIDO JAÉN En la actualidad, los sistemas de análisis de movimientos sin marcadores están siendo ampliamente utilizados en sectores como la vigilancia, el control industrial, animación, entretenimiento o la realidad virtual (Moeslund et al, 2001, Wang et al, 2003.…”