Optimisation of enhancement layer DCT coefficients in MPEG-2 SNR scalable video

1996 ◽  
Vol 32 (22) ◽  
pp. 2053 ◽  
Author(s):  
D. Wilson ◽  
M. Ghanbari
Keyword(s):  
Scalable Video ◽  
Enhancement Layer ◽  
Dct Coefficients

Fast Intra Mode Decision Algorithm Based on Mode Correlation in SVC

2013 ◽  
Vol 373-375 ◽  
pp. 525-529
Author(s):  
Luna Jing ◽  
Ning Li ◽  
Li Ni Ma
Keyword(s):  
Video Coding ◽  
Scalable Video Coding ◽  
Mode Decision ◽  
Base Layer ◽  
Scalable Video ◽  
Enhancement Layer ◽  
Decision Algorithm ◽  
Intra Mode Decision ◽  
Rate Loss ◽  
Fast Intra Mode Decision

Intra4×4 mode decision has correlation between enhancement layer and base layer in scalable video coding (SVC). In this paper, a new intra mode decision algorithm is proposed based on this correlation and the proximity of prediction directions of nine Intra4×4 prediction modes. This method is used in enhancement layer to decrease the mode numbers in enhancement layer. Experiments show that the proposed algorithm can save 27.52% encoding time on average with negligible PSNR change and small bit-rate loss.

Scalable Video Coding Bit Stream Extraction Based on Equivalent MSE Method

2011 ◽  
Vol 204-210 ◽  
pp. 1728-1732 ◽  
Author(s):  
Da Xing Qian ◽  
Hong Yu Wang ◽  
Fang Lin Niu
Keyword(s):  
Video Coding ◽  
Scalable Video Coding ◽  
Video Stream ◽  
Frame Rate ◽  
Scalable Video ◽  
Enhancement Layer ◽  
Coding Efficiency ◽  
Frequency Components ◽  
Bit Stream ◽  
Spatial Enhancement

The bit stream extraction plays an important role in Scalable Video Coding (SVC) [1]. However, one downside of current video coding methods is to ignore the video contents which is in fact an important factor for video coding efficiency. Therefore, an equivalent MSE method is proposed in this paper to extract substreams in the temporal and spatial enhancement layers. When the Motion Vectors (MVs) are large in one video, a larger frame rate is necessary to maintain the continuity of the object movement which makes no jump in the visual sense. In this sense, substreams extraction in temporal enhancement layer has to be satisfied. On the other hand, if there are some larger high-frequency components in a single frame of the video, that is to say, there are some higher spatial details in the video stream. As a result, it should try to meet the extraction requirement in spatial enhancement layer. This method has the advantage of considering the contents of the video, which can effectively improve the coding performance and quality. The experimental results have demonstrated the improved quality of reconstructed video for the equivalent MSE method when extracting bit stream arbitrarily at the same bandwidth.

SNR scalable video coder using progressive transmission of DCT coefficients

1998 ◽  
Author(s):  
Marshall A. Robers ◽  
Lisimachos P. Kondi ◽  
Aggelos K. Katsaggelos
Keyword(s):  
Scalable Video ◽  
Progressive Transmission ◽  
Video Coder ◽  
Dct Coefficients
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