| 摘要 |
<p>2-dimensional image data is produced from multidimensional image data. Pixels in 2-dimensional areas are coloured in response to calculated lighting characteristics representing the colour of said areas. Pixel colours are stored in a look-up table addressed by combining a colour value selecting representing colour hue and a level value representing another characteristic of the selected colour. Values within a specific colour or ramp initially vary to increase luminance and latterly vary to decrease saturation. Luminance may vary non-linearly to provide gamma correction. Diffuse and specular reflection can be represented in a single level value. <IMAGE></p> |
