H.264 Decoder for Portable Application

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Alizadeh, Mohammad Sadegh | 2013

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 44626 (05)
University: Sharif University of Technology
Department: Electrical Engineering
Advisor(s): Sharifkhani, Mohammad
Abstract:
As mobile multimedia services become popular, it is expected that mobile devices provide more multimedia functions such as real-time video playback, TV watching, and video games. However, real-time video applications running on mobile devices are heavily constrained by their limited computing power, compared to high-end consumer devices. In order to playback a high resolution video on mobile devices, a typical approach would be to fully decode video bitstream into the pixel-domain, and then spatially downscale the decoded frames at a desired resolution. However, due to large computation and memory required for decoding followed by downscaling, this approach is unsuitable for real-time video applications in mobile devices. We develop a novel low complexity downsizer decoder, which can operate with new features of H.264/AVC. In the proposed decoder, the predicted and residual signals are directly generated at a downscaled resolution by modifying Intra,Inter prediction and IDCT, respectively
Keywords:
H.264 Video Codec ; Decoder ; Low Complexity ; Downsizer

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