Shadows of moving surfaces

Surfaces, holes, shadows

Shadows and Convexity of Surfaces

We study the geometry and topology of immersed surfaces in Euclidean 3-space whose Gauss map satis es a certain two-piece-property, and solve the \shadow problem" formulated by H. Wente.

Learning Moving Cast Shadows for Foreground Detection

We present a new algorithm for detecting foreground and moving shadows in surveillance videos. For each pixel, we use the Gaussian Mixture Model (GMM) to learn the behavior of cast shadows on background surfaces. The pixelbased model has the advantages over regional or global model for their adaptability to local lighting conditions, particularly for scenes under complex illumination conditions...

Detecting Moving Shadows: Formulation, Algorithms and Evaluation

Moving shadows need careful consideration in the development of robust dynamic scene analysis systems. Moving shadow detection is critical for accurate object detection in video streams, since shadow points are often misclassified as object points causing errors in segmentation and tracking. Many algorithms have been proposed in the literature that deal with shadows. However, a comparative eval...

Detecting Moving Shadows: Algorithms and Evaluation

Moving shadows need careful consideration in the development of robust dynamic scene analysis systems. Moving shadow detection is critical for accurate object detection in video streams, since shadow points are often misclassified as object points causing errors in segmentation and tracking. Many algorithms have been proposed in the literature that deal with shadows. However, a comparative eval...