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Special effect device, image processing method, and shadow generating method

  • US 6,014,472 A
  • Filed: 09/23/1997
  • Issued: 01/11/2000
  • Est. Priority Date: 11/14/1995
  • Status: Expired due to Fees
First Claim
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1. A special video effect apparatus which performs a special video transformation for a source video signal, said apparatus comprising:

  • video processing means for performing a spatial video transformation on said source video signal to produce a transformed video signal based on 3-D video transform parameters; and

    shadow producing means for performing a shadow transformation on said source video signal to produce a transformed shadow signal based on shadow transform parameters, said shadow transform parameters are associated with said 3-D video transform parameters so that said shadow transformation corresponds to said video spatial transformation, whereinan algorithm of said spatial video transformation comprises 3-D video transformation algorithm for performing 3-D video transformation on said source video signal to produce a virtual 3-D video signal and a first perspective transformation algorithm for performing a first perspective transformation on said virtual 3-D video signal to produce said transformed video signal; and

    wherein,an algorithm of said shadow transformation comprises said 3-D video transformation algorithm, a second perspective transformation algorithm for performing a second perspective transformation on said virtual 3-D video signal to produce a virtual 3-D shadow signal, and said first perspective transformation algorithm for generating said transformed shadow signal.

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