Computer graphics processing and selective visual display system – Computer graphics processing – Attributes
Reexamination Certificate
2006-10-03
2006-10-03
Tung, Kee M. (Department: 2628)
Computer graphics processing and selective visual display system
Computer graphics processing
Attributes
C345S601000
Reexamination Certificate
active
07116334
ABSTRACT:
An objective of the present invention is to provide a game system, program and image generating method which can generate a more realistic image with reduced processing load by using an alpha value set depending on a depth value. Z-value for each pixel in an original image is transformed into Z2-value that is formed of bits I to J which are positioned lower than the most significant bit in the Z-value. The alpha value for each pixel is set at a value corresponding to the Z2-value. Representation of the depth of field or fog image is enabled by using the alpha value to generate an image. The Z2-value is clamped to a given value depending on a bit value other than the bits I to J of the Z-value. Bits M to N and K to L (where K≧I≧L>M≧J≧N) in the Z-value are set as index numbers in LUT1and LUT2and used to perform texture mapping for transforming the Z-value into Z3- and Z4-values. These Z3- and Z4-values are used to determine the Z2-value.
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Cunningham Greg F.
Namco Bandai Games Inc.
Tung Kee M.
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