Abstract: 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>Nmax, all colors in the original color map are reused in the scaled color map. If N<Nmin, 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 Nmin and Nmax are respective predetermined minimum and maximum thresholds for a number of colors in the original color map. A corresponding system is also provided.

Abstract: A method for determining a scaled colour map of a scaled image is described using the transformation of the original colour map and the original image only, independently of the scaled image. A number of colours N in the original colour map is determined; and provided N>Nmax, all colours in the original colour map are reused in the scaled colour map. If N<Nmin, the number of colours in the original colour map is increased. Otherwise, the scaled colour map is formed including: selecting a sub-set of colours in the original colour map; increasing a number of colours in the selected sub-set; adding the resulting sub-set with increased number of colours to the original colour map; and removing duplicate colours, wherein Nmin and Nmax are respective predetermined minimum and maximum thresholds for a number of colours in the original colour map. A corresponding system is also provided.

Abstract: 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>Nmax, all colors in the original color map are reused in the scaled color map. If N<Nmin, 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 Nmin and Nmax are respective predetermined minimum and maximum thresholds for a number of colors in the original color map. A corresponding system is also provided.

Abstract: A method for determining a scaled colour map of a scaled image is described using the transformation of the original colour map and the original image only, independently of the scaled image. A number of colours N in the original colour map is determined; and provided N>Nmax, all colours in the original colour map are reused in the scaled colour map. If N<Nmin, the number of colours in the original colour map is increased. Otherwise, the scaled colour map is formed including: selecting a sub-set of colours in the original colour map; increasing a number of colours in the selected sub-set; adding the resulting sub-set with increased number of colours to the original colour map; and removing duplicate colours, wherein Nmin and Nmax are respective predetermined minimum and maximum thresholds for a number of colours in the original colour map. A corresponding system is also provided.

Abstract: 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.

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