Maintaining Video Quality for a Down-Sampling Decoder in Low-Power Mobile Devices

J. Lee, Y. Lee, S. Park, and H. Shin (Korea)


Mobile multimedia, Lowenergy computation, MPEG4, Downsampling.


Users increasingly benefit from the capability of wireless networks and mobile devices that deliver and process multimedia content in compressed forms. For the display of a high quality video, a mobile device usually decodes and then down-samples it to fit the original image to their small screen. But this arrangement requires extra energy and computing complexity for down-sampling. In this paper, we introduce a video decoding framework which obviates separate down-sampling process for mobile devices. Simulation results show a saving of 26 to 49 % of the total energy required for decoding at the cost of a 0.9 to 6.1% degradation in picture quality.

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