| 摘要 |
A three-dimensional image signal comprises a first image component, a second component for creating a three-dimensional image in combination with the first image component, a text component comprising text-based subtitles and/or presentation graphics-based bitmap images for including in the three-dimensional image, a shared Z-location component comprising Z-location information describing the depth location of the text component within the three-dimensional image. The signal is rendered by rendering a three-dimensional image from the first image component and the second component, the rendering including rendering the text-based subtitles and/or presentation graphics-based bitmap images in the three-dimensional image, the rendering of the text component including adjusting the depth location of the text-based subtitles and/or presentation graphics-based bitmap images based on the shared Z-location component. Advantageously, the Z-location for both text-based and presentation-graphics-based subtitles is the same and only needs to be stored once per stream. |
