Fast perspective texture mapping for 3-d computer graphics

G - Physics – 06 – T

Patent

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Details

G06T 15/10 (2006.01) G06T 15/20 (2006.01)

Patent

CA 2185926

A method of processing computer graphics information for rendering an image on a display, comprising texture mapping of a pre- prepared texture map to flat surfaces of an object which is to be viewed in perspective on the display, wherein each surface to be texture mapped is scanned along notional lines of constant z (depth) coordinate (z-lines) to determine the end coordinates of those lines, to which the texture values of the pre-prepared texture map can be mapped without modification for perspective.

L'invention se rapporte à un procédé de traitement d'informations graphiques visant à restituer une image sur un écran et qui consiste à effectuer le mappage des textures d'une cartographie de textures prépréparée pour la mettre en correspondance avec les surfaces plates d'un objet qui sera observé en perspective sur l'écran. Chaque surface pour laquelle il faut effectuer le mappage des textures est balayée le long de lignes imaginaires de coordonnée constante z (profondeur) (lignes z), afin de déterminer les coordonnées terminales de ces lignes sur lesquelles les valeurs de texture de la cartographie des textures prépréparée peuvent faire l'objet d'un mappage sans modification de perspective.

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