The effect of image stabilization on the performance of the MPEG-2 video coding algorithm

Erdem A., Eroglu Ç.

Visual Communications and Image Processing 1998 Conference, San-Jose, Kostarika, 28 - 30 Ocak 1998, cilt.3309, ss.272-277 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 3309
  • Basıldığı Şehir: San-Jose
  • Basıldığı Ülke: Kostarika
  • Sayfa Sayıları: ss.272-277
  • Marmara Üniversitesi Adresli: Hayır

Özet

The effect of image stabilization on the performance of the MPEG-2 video coding algorithm is investigated. It is shown that image stabilization prior to MPEG-2 coding oi an unsteady image sequence does increase the quality of the compressed video considerably. The quality improvement; is explained by fact that an actual zero motion vector is favored over a zero differential motion vector in the MPEG-2 video coding scheme. The bits saved in coding the motion information in P Frames are then utilized in the coding of the DCT data in I frames. The temporal prediction of the macroblocks in P and B Frames are also improved because of the increased quality of the compressed I Frames and because an image stabilization algorithm can compensate for displacement with better than 1/2 pixel accuracy.