| 摘要 |
An edge enhancement apparatus includes an edge detecting unit coupled to a supply node supplying an image signal, to produce at an output node a first signal indicative of presence of an image edge in the image signal, a Mach checking unit coupled to the supply node to produce at an output node a second signal indicative a magnitude of a Mach effect in respect of the image edge, and an edge enhancement unit coupled to the supply node, the output node of the edge detecting unit, and the output node of the Mach checking unit, to determine a lightness change and a chroma change to be made in the image signal in response to the first signal and second signal, and to perform edge enhancement on the image signal by changing at least one of lightness and chroma in response to the determined lightness change and chroma change. |
