Abstract
This paper presents a novel Multiresolution, Perceptual and Vector Quantization (MPVQ) based video coding scheme. In the intra-frame mode of operation, a wavelet transform is applied to the input frame and decorrelates it into its frequency subbands. The coefficients in each detail subband are pixel quantized using a uniform quantization factor divided by the perceptual weighting factor of that subband. The quantized coefficients are finally coded using a quadtree-coding algorithm. Perceptual weights are specifically calculated for the centre of each detail subband. In the inter-frame mode of operation, a Displaced Frame Difference (DFD) is first generated using an overlapped block motion estimation/compensation technique.
Original language | English |
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Pages (from-to) | 569-583 |
Number of pages | 15 |
Journal | Multimedia Tools and Applications |
Volume | 58 |
Issue number | 3 |
DOIs | |
Publication status | Published - Jun 2012 |
Keywords
- video coding scheme
- algorithm