Third issue of volume 12

The mode decision approach considered uses a macroblock (MB) position constraint model (MPCM) that reduces the number of candidate modes based on mode correlation and rate distortion costs (RD cost) of previously encoded frames/views. The experimental results show that the proposed method can save approximately 86 % of the encoding time compared with the mode decision used in the reference software of joint multiview video coding, with 0.077 dB loss in “Bjontegaard delta peak signal-to-noise ratio” (BDPSNR) and 2.3 % increase in the total Bjontegaard delta bit rate (BDBR). A corresponding Verilog design for FPGA implementation is shown to increase the processing speed as demonstrated by simulation results showing high performance in accuracy and processing speed with good noise robustness. The low-energy ME architecture proposed in this paper overcomes this drawback by utilizing a quadrant-based multi-octagon search algorithm, resulting in fast-search motion estimation and reducing the clock cycle by 42 % leading to a reduction in the corresponding energy consumption by 43 %.