Patent ID: 6833835
Filing Date: 2004-12-21
Classification: G06T

Abstract:
A method for antialiased imaging of graphical objects on a pixel oriented display having a display memory storing physical pixels located on the display, comprising:retrieving from the display memory an existing colour value of a physical pixel located on the display to be modified; retrieving different virtual pixels having input colour values from a separate memory, the virtual pixels associated solely with the physical pixel and not stored in the display memory and not physically displayed on the display; retrieving from pixel input data to be rasterized an input colour value of said virtual pixel by splitting the retrieved existing and input colour values in basic red, green and blue colour components, by linearly combining for each colour component the existing and the input colour value; using the results of the combination derived from various different virtual pixels corresponding to the location of the physical pixel to overwrite the existing colour value of the physical pixel at the memory location of said physical pixel; and while linearly combining for each component the existing and the input colour value, applying weighting factors, depending on a factor by which the virtual pixel resolution is higher than the physical pixel resolution according to the following algorithm: ((Nâˆ’1)*existing colour value+M*input colour value)/N, in which M represents a value at least equal to one and N being R2.