Patent ID: 6515673
Filing Date: 2003-02-04
Classification: G06T,H04N

Abstract:
A method for displaying an immersive video formed from a plurality of compressed environment map, wherein each compressed environment map includes a header and a plurality of compressed tiles and wherein each compressed tile corresponds with an uncompressed tile of an environment map, the method comprising:selecting a plurality of relevant uncompressed tiles for each of the compressed environment maps by: selecting each uncompressed tile that encompasses a view frustum encompassing the view window; selecting each uncompressed tile contained within the view frustum; and selecting each uncompressed tile having at least one side crossing a side of the view frustum; retrieving a compressed tile corresponding to each relevant uncompressed tile from each compressed environment map thereby forming a plurality of relevant compressed tiles for each compressed environment map; decompressing each of the relevant compressed tiles of each compressed environment map to form a partially decompressed environment map for each compressed environment map; and creating an image for a view window for each compressed environment map by texture mapping a visible portion of a texture projection using each partially decompressed environment map.