| 摘要 |
<p>A foveated, compressed digital video signal is produced and transmitted over a limited bandwidth communication channel to a display as follows. A frequency transform-encoded digital video signal having encoded frequency coefficients representing a sequence of video frames is provided, wherein the encoding removes temporal redundancies and encodes the frequency coefficients as base layer frequency coefficients in a base layer and residual frequency coefficients in an enhancement layer. An observer's gaze point is identified. The encoded signal is partially decoded to recover the frequency coefficients. The residual frequency coefficients are adjusted to reduce high frequency content of the signal in regions away from the gaze point. The frequency coefficients, including the adjusted residual frequency coefficients, are recoded to produce a foveated, transcoded digital video signal that is displayed.</p> |
