Conditional motion compensated interpolation of digital...

Details Conditional motion compensated interpolation of digital... Conditional motion compensated interpolation of digital...

H - Electricity

04

N

350/33

H04N 7/12 (2006.01) H04N 7/26 (2006.01) H04N 7/36 (2006.01) H04N 7/46 (2006.01) H04N 7/50 (2006.01)

Patent

CA 2024135

-11- CONDITIONAL MOTION COMPENSATED INTERPOLATION OF DIGITAL MOTION VIDEO Abstract Motion digital video is encoded and decoded by a motion compensated interpolation method and apparatus. In accordance with the method, selected frames of the video are interpolated in the decoder with the aid of interpolation correction codes that are generated in the encoder and sent to the decoder. In an encoder embodiment that interpolates half of the frames, every other frame is encoded and decoded within the encoder. The decoded versions of adjacent frames are appropriately combined and compared to the interleaved camera frame that is to be interpolated in the decoder. The differences, which correspond to "pels correction" information, are encoded and quantized. Those that exceed a predetermined threshold value are added to the encoder's output buffer. The inverse operation is carried out in the decoder. That is every pair of decoded frames is averaged andcombined with the decoded "pels correction" information to form the interpolatedframes.

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