Percentage Closer Soft Shadows is a popular technique to generate contact hardening soft shadows with shadow mapping. Recent research in shadow generation for translucent objects makes it possible to realize shadows for translucent objects in real-time environments. However, for multiple translucent blockers it is unclear how an appropriate blocker depth can be calculated. In this paper, we pro...

Shadows are important elements in creating a realistic image and in providing the user with visual cues about object placement. A review of many different shadow algorithms is found in the survey published by Woo et al. [23] and in Watt and Watt’s book [21]. Here we will present the most important real-time algorithms for dynamic shadows. The first section handles the special case of shadows ca...

We present a scalable object tracking framework, which is capable of removing shadows and tracking the people. The framework consists of background subtraction, fuzzy based shadow removal and boundary tracking algorithm. This work proposes a general-purpose method that combines statistical assumptions with the object-level knowledge of moving objects, apparent objects, and shadows acquired in t...

This paper presents a novel approach for eliminating unexpected shadows from multiple pedestrians from a static and textured background using Gaussian shadow modeling. First, a set of moving regions are segmented from the static background using a background subtraction technique. The extracted moving region may contain multiple shadows from various pedestrians. In order to remove these unwante...

The shadows cast by moving objects enable human adults and infants to infer the motion trajectories of objects. Nonhuman animals must also be able to discriminate between objects and their shadows and infer the spatial layout of objects from cast shadows. However, the evolutionary and comparative developmental origins of sensitivity to cast shadows have not been investigated. In this study, we ...

The interaction of light with surfaces results in a number of lighting effects that may serve as valuable visual cues. Previous research on shadows has shown them to be effective in determining the three-dimensional (3-D) layout of a scene, but interreflections have been ignored as cues for spatial layout. Interreflections as well as shadows may help to disambiguate the 3-D layout of objects by...

Identifying moving objects from a video sequence is a fundamental and critical task in many computer vision applications. We develop an efficient adaptive object segmentation algorithm for color video surveillance sequences; background is modeled using Multiple Correlation Coefficient ( ) using pixel-level based approach. Segmented foreground generally includes self shadows as foreground object...