Up-sampling Dependent Frame Rate Reduction for Low Bit-Rate Video Coding
In low bit rate video coding, the frame rate of input sequence can be reduced to the half or even smaller portion by skipping or deleting frames before compression, and then the temporal resolution is restored via up-sampling at the decoder side. Numerous algorithms have been developed to address the problem of temporal resolution improvement. Actually, the quality of up-sampled frames depends on not only the performance of up-sampling method but also the information maintained in the down-sampled video sequence. To improve the quality of up-sampled frames and smooth the quality between the up-sampled and decompressed frames, this paper proposes an up-sampling dependent frame rate reduction.