| 摘要 |
<p>An image conversion unit (100,200,300) for converting a first image (101) with a first resolution into a second image (103) with a second resolution, the second resolution being higher than the first resolution is disclosed. The image conversion unit (100,200,300) comprises a noise generator (106) for generating noise and a combining unit (104) arranged to add the noise to the second image (103). Preferably the noise that is added comprises spectral components which are in a part of a frequency spectrum which is above the Nyquist frequency of the first image. Optionally the image conversion unit comprises a noise measurement unit (302) to control the noise generator (106).</p> |
