| 摘要 |
A method is disclosed for improving the subjective impression of a digitized image displayed with a low amplitude resolution. An analog video signal is digitized with a first amplitude resolution. Before the amplitude resolution of the video signal is reduced to a second, lower amplitude resolution, a digital noise signal is added to the digital video signal. The maximum amplitude of the added digital noise signal is thereby equal to or smaller than the amplitude corresponding to the least significant bit of the second resolution. |
