A video encoder design combining edge-adaptive lifting and scalable block-matching with motion compensation

Sedat TELÇEKEN; Ömer Nezih GEREK

Makale detayları

A video encoder design combining edge-adaptive lifting and scalable block-matching with motion compensation

Yazarlar:

Sedat TELÇEKEN | Ömer Nezih GEREK

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2012 Vol.20 Issue 1, pp.111-123

Belge Tipi:

Makale

Yayın Tarihi:

12/2011

Belge Dili:

Türkçe

Document ID (Org No.):

2000743638

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632

Özet:

 

This study aimed to achieve video compression by using a  novel lifting-based hybrid encoder that also uses motion compensation.  The proposed encoder separates video frames into temporal groups,  within which certain frames are selected for producing temporal and  spatial predictions over the rest of the frames.  The predictions  utilize spatiotemporal lifting together with motion compensation.  The  combination of spatial information with temporal changes is inspired  from the idea of edge-adaptive lifting, which alters prediction  directions in images.  A further incorporation of well-known  block-matching methods with different levels was observed to improve  the performance.  To provide the first compression results,  unpredicted frames and residues between the predicted frames and their  originals were quantized and entropy was encoded.  Peak  signal-to-noise ratio (PSNR) measurements were used to measure the  performance analysis of the proposed encoding method.  Experimental  results revealed that higher compression ratios were obtained as the  block-matching level was increased, while the PSNR values remained  within reasonable ranges.  PSNR values of around 29 dB were obtained  with a 1000:27 compression ratio.

 

This study aimed to achieve video compression by using a  novel lifting-based hybrid encoder that also uses motion compensation.  The proposed encoder separates video frames into temporal groups,  within which certain frames are selected for producing temporal and  spatial predictions over the rest of the frames.  The predictions  utilize spatiotemporal lifting together with motion compensation.  The  combination of spatial information with temporal changes is inspired  from the idea of edge-adaptive lifting, which alters prediction  directions in images.  A further incorporation of well-known  block-matching methods with different levels was observed to improve  the performance.  To provide the first compression results,  unpredicted frames and residues between the predicted frames and their  originals were quantized and entropy was encoded.  Peak  signal-to-noise ratio (PSNR) measurements were used to measure the  performance analysis of the proposed encoding method.  Experimental  results revealed that higher compression ratios were obtained as the  block-matching level was increased, while the PSNR values remained  within reasonable ranges.  PSNR values of around 29 dB were obtained  with a 1000:27 compression ratio.

Makale detayları

A video encoder design combining edge-adaptive lifting and scalable block-matching with motion compensation

Yazarlar: Sedat TELÇEKEN | Ömer Nezih GEREK

Yayıncı: TUBITAK

Dergi: Turkish Journal of Electrical Engineering and Computer Science 2012 Vol.20 Issue 1, pp.111-123

Belge Tipi: Makale

Yayın Tarihi: 12/2011

Belge Dili: Türkçe

Document ID (Org No.): 2000743638

Sıklık: İki Aylık

eISSN: 1303-6203

pISSN: 1300-0632

Sayı

Yazarlar:

Sedat TELÇEKEN | Ömer Nezih GEREK

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2012 Vol.20 Issue 1, pp.111-123

Belge Tipi:

Makale

Yayın Tarihi:

12/2011

Belge Dili:

Türkçe

Document ID (Org No.):

2000743638

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632