Method and apparatus for rendering smooth teletext graphics

摘要

Method for rendering smooth teletext graphics, when an input teletext page (D 1 ) is to be displayed at a target resolution on a device. The method comprises the steps of:-separating ( 100 ) non-text information and text information composing the input teletext page (D 1 ) in order to give as output an intermediate non-text bitmap (D 5 ) at an intermediate resolution and a final text bitmap (D 4 ) at said target resolution;-scaling up ( 200 ) the intermediate non-text bitmap (D 5 ) to obtain a final non-text bitmap (D 7 ) at said target resolution, using an advanced up-scaling algorithm; and,-merging ( 300 ) the final non-text bitmap (D 7 ) and the final text bitmap (D 4 ) in order to give an output of a rendered bitmap (D) having the target resolution.