| 摘要 |
<p>A method of converting a digital colour image to a digital grey value image and in so doing distinguishably reproducing colours present in the colour image, the digital colour image being built up of pixels each having a colour value and the digital grey value image being built up of pixels each having a grey value, wherein the colour values of the pixels are converted to grey values by the use of a dynamically adapted conversion function which is optimised on the basis of a comparison of colour differences in the digital colour image and grey value differences corresponding to said colour differences in the digital grey value image. In this way, the colours which in conventional conversion methods are imaged on identical or substantially identical grey values can nevertheless be distinguishably reproduced. <IMAGE></p> |
