Coding method of asymmetric stereoscopic video

Coding method of asymmetric stereoscopic video

CN
  • CN 101,729,892 B
  • Filed: 11/27/2009
  • Issued: 07/27/2011
  • Est. Priority Date: 11/27/2009
  • Status: Active Grant
First Claim
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1. asymmetric method for encoding stereo video, the detailed process of this coding method is:

  • stereoscopic video is that unit handles with the image sets, for the left viewpoint video in the current image sets of handling, adopting only has the single view method for video coding based on H.264 of time domain prediction to encode;

    For the right viewpoint video in the current image sets of handling, at first each original image to right viewpoint video carries out the 1/2 resolution down-sampled images that 1/2 resolution down-sampling obtains correspondence, each 1/2 resolution down-sampled images to right viewpoint video adopts existing time domain prediction to have the method for video coding of interview prediction to encode again then, in the process that each 1/2 resolution down-sampled images of right viewpoint video is encoded, defining current 1/2 resolution down-sampled images of encoding is current encoded frame, the time domain prediction reference frame of current encoded frame is a decoding and rebuilding frame of having finished 1/2 resolution down-sampled images of coding in the right viewpoint video, and the interview prediction reference frame of current encoded frame is for to carrying out the 1/2 resolution down-sampled images that obtains behind the 1/2 resolution down-sampling with the decoding and rebuilding frame of current encoded frame synchronization in the left viewpoint video;

         1), a horizontal direction counter Count is set the sample direction that it is characterized in that described 1/2 resolution down-sampling is selected to obtain by following process;

    HWith a vertical direction counter Count V, Count HAnd Count VInitial value be 0;

         2), each can carry out the size of horizontal forecast residual sum vertical prediction residual error that horizontal forecast can carry out the macro block of vertical prediction again in the I two field picture of the left viewpoint video of the more current one by one image sets of handling;

    the current macro block of handling is a current macro in the definition I two field picture, judge whether current macro can carry out horizontal forecast and can carry out vertical prediction again, if, then relatively current macro adopts the horizontal forecast residual error of horizontal forecast model prediction and the size of the vertical prediction residual error that adopts the vertical prediction model prediction, if the horizontal forecast residual error is less than the vertical prediction residual error, horizontal direction counter Count then HAdd 1, if the horizontal forecast residual error greater than the vertical prediction residual error, vertical direction counter Count then VAdd 1,, then do not revise horizontal direction counter Count if the horizontal forecast residual error equals the vertical prediction residual error HWith vertical direction counter Count VValue, perhaps horizontal direction counter Count HWith vertical direction counter Count VAll add 1;

    Otherwise, next macro block as current macro, is repeated said process, all can carry out the comparison of horizontal forecast residual sum vertical prediction residual error that horizontal forecast can carry out the macro block of vertical prediction again in finishing the I two field picture of left viewpoint video;

    Describedly can carry out the macro block that horizontal forecast can carry out vertical prediction again and be meant that the left neighbor of this macro block and last neighbor exist simultaneously;

         3), judge Count HWhether greater than Count VIf, then each original image of right viewpoint video is carried out 1/2 resolution down-sampling and the sample direction of carrying out 1/2 resolution down-sampling with the decoding and rebuilding frame of current encoded frame synchronization in the left viewpoint video is all adopted horizontal direction, otherwise, each original image of right viewpoint video is carried out 1/2 resolution down-sampling and the sample direction of carrying out 1/2 resolution down-sampling with the decoding and rebuilding frame of current encoded frame synchronization in the left viewpoint video is all adopted vertical direction.

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