Perceptual quality evaluation of asymmetric stereo video coding for efficient 3D rate scaling

Nükhet ÖZBEK; Gizem ERTAN; Oktay KARAKUŞ

Makale detayları

Perceptual quality evaluation of asymmetric stereo video coding for efficient 3D rate scaling

Yazarlar:

Nükhet ÖZBEK | Gizem ERTAN | Oktay KARAKUŞ

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2014 Vol.22 Issue 3, pp.663-678

Belge Tipi:

Makale

Yayın Tarihi:

5/2014

Belge Dili:

Türkçe

Document ID (Org No.):

2000742998

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632

Özet:

 

In 3D perception, the binocular suppression of the human  vision, perceiving high quality 3D video in the case of a view in higher  quality, can be exploited in asymmetric stereo video coding for efficient 3D  rate scaling. Hence, the best stereo rate-visual distortion performance may  be gained by asymmetric coding, which is the reduction of the spatial and/or  quantization resolution of the low-quality view, while keeping the  high-quality view in full resolution. However, how to determine the level of  asymmetry and what type of scaling should be chosen are still in question.  In this work, we try to assess the overall performance of the scalability  options with several test contents. The test videos are encoded at critical  bitrates with symmetric options and spatial or signal-to-noise ratio (SNR)  asymmetric coding, and are subjectively evaluated in a stereo-polarized  projection 3D display system. Two different types of evaluation  methodologies are used: the Double-Stimulus Continuous-Quality Scale (DSCQS)  and Subjective Evaluation of Stereo Video Quality (SESVIQ). Dense visual  tests show that the spatial scaling is generally inferior when compared to  SNR scaling, except that high motion scenes and symmetric SNR are more  preferable for a higher bitrate. The characteristics of the video content  should be taken into consideration for efficient stereo rate scaling.

 

In 3D perception, the binocular suppression of the human  vision, perceiving high quality 3D video in the case of a view in higher  quality, can be exploited in asymmetric stereo video coding for efficient 3D  rate scaling. Hence, the best stereo rate-visual distortion performance may  be gained by asymmetric coding, which is the reduction of the spatial and/or  quantization resolution of the low-quality view, while keeping the  high-quality view in full resolution. However, how to determine the level of  asymmetry and what type of scaling should be chosen are still in question.  In this work, we try to assess the overall performance of the scalability  options with several test contents. The test videos are encoded at critical  bitrates with symmetric options and spatial or signal-to-noise ratio (SNR)  asymmetric coding, and are subjectively evaluated in a stereo-polarized  projection 3D display system. Two different types of evaluation  methodologies are used: the Double-Stimulus Continuous-Quality Scale (DSCQS)  and Subjective Evaluation of Stereo Video Quality (SESVIQ). Dense visual  tests show that the spatial scaling is generally inferior when compared to  SNR scaling, except that high motion scenes and symmetric SNR are more  preferable for a higher bitrate. The characteristics of the video content  should be taken into consideration for efficient stereo rate scaling.

Makale detayları

Perceptual quality evaluation of asymmetric stereo video coding for efficient 3D rate scaling

Yazarlar: Nükhet ÖZBEK | Gizem ERTAN | Oktay KARAKUŞ

Yayıncı: TUBITAK

Dergi: Turkish Journal of Electrical Engineering and Computer Science 2014 Vol.22 Issue 3, pp.663-678

Belge Tipi: Makale

Yayın Tarihi: 5/2014

Belge Dili: Türkçe

Document ID (Org No.): 2000742998

Sıklık: İki Aylık

eISSN: 1303-6203

pISSN: 1300-0632

Sayı

Yazarlar:

Nükhet ÖZBEK | Gizem ERTAN | Oktay KARAKUŞ

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Electrical Engineering and Computer Science 2014 Vol.22 Issue 3, pp.663-678

Belge Tipi:

Makale

Yayın Tarihi:

5/2014

Belge Dili:

Türkçe

Document ID (Org No.):

2000742998

Sıklık:

İki Aylık

eISSN:

1303-6203

pISSN:

1300-0632