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View Projection for Dynamic Configurations

  • US 20090073324A1
  • Filed: 06/18/2008
  • Published: 03/19/2009
  • Est. Priority Date: 09/18/2007
  • Status: Active Grant
First Claim
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1. Method of reducing distortion of an image projected onto a moving object, said method comprising the following steps:

  • i) dividing a movement pattern of said moving object into N discrete position states;

    ii) for each discrete position state;

    a) obtaining a light transport matrix T relating a projector to a camera whose field-of-vision includes said moving object;

    b) for each row in light transport matrix T, comparing matrix entries along a common row of said light transport matrix T, retaining the highest valued matrix entry in the common row and assigning a null value to remaining entries in said common row to create a modified light transport matrix T*;

    c) identifying, in turn, each column in modified light transport matrix T* as a target column, and for each target column calculating normalized values for non-null values in said target column with reference to said target column;

    d) creating an intermediate matrix of equal size as said modified light transport matrix T*;

    e) populating each column in said intermediate matrix with the calculated normalized values of its corresponding target column in said modified light transport matrix T*, each normalized value in each populated column in said intermediate matrix maintaining a one-to-one correspondence with said non-null entry values in its corresponding column in said modified light transport matrix T*;

    f) applying a transpose matrix operation on said intermediate matrix to create a view projection matrix VCI, and correlating said created view projection matrix to the current discrete position state of said moving object;

    g) creating a transformed image pI of a desired projection image by multiplying said desired projection image by its corresponding view projection matrix VCI as determined by the moving object'"'"'s current discrete position state DP_I, said current discrete position state DP_I being the one of said N discrete position states within which said moving object currently resides, said transformed image pI being correlated to its corresponding current discrete position state DP_I; and

    iii) having said projector project transformed images correlated to the discrete position state within which said moving object currently resides.

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