نتایج جستجو برای: shadow 50 light

تعداد نتایج: 848769  

Journal: :Journal of the Illuminating Engineering Institute of Japan 1992

1999
J. STAUDER

| To prevent moving shadows being misclassiied as moving objects or parts of moving objects, this paper presents an explicit method for detection of moving cast shadows on a dominating scene background. Those shadows are generated by objects moving between a light source and the background. Moving cast shadows cause a frame diierence between two succeeding images of a monocular video image sequ...

Journal: :Canadian Association of Radiologists Journal 2019

Journal: :The Abstracts of ATEM : International Conference on Advanced Technology in Experimental Mechanics : Asian Conference on Experimental Mechanics 2019

Journal: :Journal of Environmental Engineering (Transactions of AIJ) 2013

2009
Michael Schwärzler

Simulating physically accurate soft shadows in Computer Graphics applications is usually done by taking multiple samples from all over the area light source and accumulating them. Due to the unpredictability of the size of the penumbra regions, the sampling density has to be quite high in order to guarantee smooth shadow transitions in all cases, making the process computationally extremely exp...

Journal: :IEEE Trans. Multimedia 1999
Jürgen Stauder Roland Mech Jörn Ostermann

To prevent moving shadows being misclassified as moving objects or parts of moving objects, this paper presents an explicit method for detection of moving cast shadows on a dominating scene background. Those shadows are generated by objects moving between a light source and the background. Moving cast shadows cause a frame difference between two succeeding images of a monocular video image sequ...

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