Vantrix Corporation

Simon Descarries

A method for determining a scaled color map of a scaled image is described using the transformation of the original color map and the original image only, independently of the scaled image. A number of colors N in the original color map is determined; and provided N&#x3e;N, all colors in the original color map are reused in the scaled color map. If N&#x3c;N, the number of colors in the original color map is increased. Otherwise, the scaled color map is formed including: selecting a sub-set of colors in the original color map; increasing a number of colors in the selected sub-set; adding the resulting sub-set with increased number of colors to the original color map; and removing duplicate colors, wherein Nand Nare respective predetermined minimum and maximum thresholds for a number of colors in the original color map. A corresponding system is also provided.

Method and system for predictive scaling of color mapped images

Method and system for predictive scaling of colour mapped images

A method for scaling an original color mapped image are disclosed. The method performs steps of: transforming the original color map into the scaled color map based on the original color map and the original image independently of the scaled image; scaling the original image into the scaled image; for each pixel of the scaled image: determining a set of contributing pixels in the original image, which define a color of the pixel; determining the color of the pixel based on colors of the contributing pixels and geometric proximity of the pixel to the contributing pixels; establishing correspondence between the color of the pixel and a color in the scaled color map; and determining a corresponding color map index thereof; and setting the determined color map index in the scaled pixel map. A corresponding system for scaling digital images is also provided.

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Sherbrooke, Canada

Simon Descarries