| 摘要 |
<p>This invention relates to a method of supporting a first and a second image format, the method comprising the steps of obtaining image data in the first image format or in the second image format from a compressed image, and deriving relevant information on the basis of the obtained image data, where the method further comprises the step of applying a base function to at least part of the obtained image using at least part of the derived relevant information, where the base function is a function common to both the first and the second image format. In this way a single transform may support two different compressed image formats having certain similarities like the JPEG and JPEG2000 without having to implement separate individual support for each format. Additionally, backward compatibility to earlier JPEG standard is obtained in a very simple way while maintaining compatibility with the newer JPEG2000 standard.</p> |
