| 摘要 |
<p>A method of operating a computer to produce contrast enhanced digital images produces a histogram (211) having a first axis corresponding to a measurable property (e.g., luminance) and a second axis corresponding to a count of particular value for the measurable property. This histogram is divided into clusters and histogram equalisation or stretching is performed on each cluster to modify the histogram. The modified histogram is used to adjust the value of the first measurable property to enhance an image contrast. The histogram is divided into clusters using a pattern matching technique, gaussian distributions and uniform distributions being separated into individual clusters. <IMAGE></p> |
