| Autor: |
Ates H.F. |
| Přispěvatelé: |
Bölüm Yok, Ates, H.F., Elektrik-Elektronik Mühendisligi Bölümü, Isik Universitesi, Istanbul, Turkey |
| Jazyk: |
turečtina |
| Rok vydání: |
2013 |
| Předmět: |
|
| Popis: |
2013 21st Signal Processing and Communications Applications Conference, SIU 2013 -- 24 April 2013 through 26 April 2013 -- Haspolat -- 98109 In literature video coding efficiency of H.264 standard has been improved using decoder-side super-resolution (SR). In this paper SR estimation is used during encoding in place of skip/direct mode prediction of H.264 standard and coding performance is optimized. First P- And B-frames are downsampled and H.264 encoded at lower resolution (LR). Then reconstructed LR frames are super-resolved using decoderside motion estimation. Also bicubic interpolation of the LR frame is used as an alternative to SR reconstruction. A rate-distortion optimal mode selection algorithm determines for each macroblock which of the two reconstructions to use as skip/direct mode prediction. Simulations indicate an average of 1.36 dB PSNR improvement or 30.3% bitrate reduction at low bitrates when compared to H.264 standard. Average PSNR gains reach as high as 3.63 dB depending on the video content. © 2013 IEEE. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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