主权项 |
1. A method of processing a digital image signal in a processing chain between an image generator and an image display, the digital image signal being a video signal, wherein a dither pattern is applied to the image signal at a point in the processing chain, the dither pattern has a first energy spectrum, the method comprising the steps:
applying a noise pattern to the image signal in the processing chain, the noise pattern having a second energy spectrum, which is configured such that the combination of the first energy spectrum of the dither pattern and the second energy spectrum of the noise pattern results in a more continuous energy spectrum, wherein the first energy spectrum of the dither pattern has a set of peaks and the second energy spectrum of the noise pattern has minima at positions corresponding to at least some of the peaks in the first energy spectrum. |