| 摘要 |
A method for generating a font for display on an interlaced monitor which is relatively free of the distorting effects of interlacing. The method operates by obtaining an original bitmap for a character in the font which is larger than a desired size for the font. This original bitmap is subjected to a weighted filtering to produce a filtered bitmap. The filtered bitmap is reduced to a desired font size by dividing the filtered bitmap into a plurality of tiles. Each tile is subjected to an unweighted filtering to produce an average value, which is rounded to produce a value for a corresponding pixel in a reduced bitmap. Next, the reduced bitmap is quantized to form a bitmap for display by setting all values which exceed an upper quantization limit to the upper quantization limit, and if necessary, setting all values which are below a lower quantization limit to the lower quantization limit. If a color display is used, pixels within the bitmap for display are used to index a color map, which contains a range of blendings of a font color with a background color, to produce a color bitmap for display. Coefficients in the weighted filtering process can be iteratively adjusted to achieve a satisfactory display of characters within the font on an interlaced monitor. |
