| 摘要 |
For transmitting video data from a central unit ( 1 ) via a mobile radio network ( 2 ) to a mobile terminal ( 3 ) having a display unit ( 32 ), determined is the gaze direction of a user of the display unit ( 32 ) by means of a gaze direction determination module ( 322 ) of the display unit ( 32 ). The gaze direction is transmitted by the terminal ( 3 ) via the mobile radio network ( 2 ) to the central unit ( 1 ). Based on the gaze direction, the central unit ( 1 ) determines position-dependent correlation threshold values. Moreover, the central unit ( 1 ) generates bit matrices that identify correlating picture elements having correlating picture element values, the correlating picture elements being determined dependent on the correlation threshold values. The bit matrices are transmitted together with the video data, one respective common data element, having a common picture element value, being transmitted for correlating picture elements. The display unit ( 32 ) renders picture signals based on the video data and the bit matrices. By determining the correlation threshold values depending on the gaze direction of the user, more severe conditions on the correlation of the picture element values can be applied to picture elements, located in the gazing direction of the user, than to picture elements, located outside the gaze direction. Thereby, the data volume to be transmitted can be reduced, without impairing qualitatively in a significant way for the user the subjective perception of the rendered video data.
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