Luminance-based color resolution enhancement

A computer readable medium having computer executable instructions for performing steps including:

• (a) converting luminance data of a multi-bit per pixel raster image to binary data per pixel, wherein the luminance data is a Y only component in a luminance chrominance color space;
• (b) identifying a working pixel from the binary data;
• and,
• (c) modifying the Y only component luminance data of the working pixel such that an anti-aliasing effect is achieved relative to the raster image.

A method of anti-aliasing an edge of an object in a raster image, the raster image being represented by multi-bit per pixel data, the method comprising the steps of:

• (a) thresholding a pure luminance only component of the multi-bit per pixel data to obtain a copy representation of the raster image in a binary data format;
• (b) identifying a working pixel in the binary data for anti-aliasing with respect to the edge of the object;
• (c) modifying the pure luminance only component of the working pixel, the sure luminance only component being defined in the multi-bit per pixel data;
• and,
• (d) assigning the modified pure luminance only component and assigning chroma data, if any, of the object to the multi-bit per pixel data of the working pixel thereby producing an anti-aliasing effect for the working pixel relative to the object.

A resolution enhancement apparatus for enhancing resolution of a multi-bit per pixel raster image, comprising:

• (a) conversion apparatus for converting a pure luminance only component of the multi-bit per pixel raster image to binary data per pixel;
• (b) pixel identification apparatus for identifying a working pixel in the binary data for anti-aliasing;
• and,
• (c) luminance modification apparatus for modifying the pure luminance only component of the working pixel whereby an anti-aliasing effect is achieved for the working pixel relative to the raster image.