Bottom-up check and temporal rate proportion based fast InterIMV algorithm in versatile video coding

2020 ◽  
Author(s):  
Yihang Li ◽  
Ziyan Zhao ◽  
Qin Liu ◽  
Songlin Du ◽  
Takeshi Ikenaga
Keyword(s):  
Video Coding ◽  
Bottom Up ◽  
Temporal Rate

Bottom-up motion compensated prediction in wavelet domain for spatially scalable video coding

2002 ◽  
Vol 38 (21) ◽  
pp. 1251 ◽  
Author(s):  
G. Van der Auwera ◽  
A. Munteanu ◽  
P. Schelkens ◽  
J. Cornelis
Keyword(s):  
Video Coding ◽  
Scalable Video Coding ◽  
Scalable Video ◽  
Wavelet Domain ◽  
Bottom Up

scholarly journals A Trellis Based Temporal Rate Allocation and Virtual Reference Frames for High Efficiency Video Coding

Electronics ◽  
2021 ◽  
Vol 10 (12) ◽  
pp. 1384
Author(s):  
Xiem HoangVan ◽  
Le Dao Thi Hue ◽  
Thuong Nguyen Canh
Keyword(s):  
Video Coding ◽  
Reference Frame ◽  
Reference Frames ◽  
High Efficiency ◽  
Critical Issue ◽  
Rate Allocation ◽  
Programming Approach ◽  
High Efficiency Video Coding ◽  
Virtual Reference ◽  
Temporal Rate

The High Efficiency Video Coding (HEVC) standard has now become the most popular video coding solution for video conferencing, broadcasting, and streaming. However, its compression performance is still a critical issue for adopting a large number of emerging video applications with higher spatial and temporal resolutions. To advance the current HEVC performance, we propose an efficient temporal rate allocation solution. The proposed method adaptively allocates the compression bitrate for each coded picture in a group of pictures by using a trellis-based dynamic programming approach. To achieve this task, we trained the trellis-based quantization parameter for each frame in a group of pictures considering the temporal layer position. We further improved coding efficiency by incorporating our proposed framework with other inter prediction methods such as a virtual reference frame. Experiments showed around 2% and 5% bitrate savings with our trellis-based rate allocation method with and without a virtual reference frame compared to the conventional HEVC standard, respectively.

Psychology and Culture: Top Down Versus Bottom Up?

PsycCRITIQUES ◽  
2005 ◽  
Vol 50 (19) ◽  
Author(s):  
Michael Cole
Keyword(s):  
Top Down ◽  
Bottom Up
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