scholarly journals H.266/VVC fast intra prediction using Sobel edge features

2020 ◽  
Author(s):  
Shih‐Hsuan Yang ◽  
Sheng‐Jung Hsiao
Keyword(s):  
Intra Prediction ◽  
Fast Intra Prediction ◽  
Edge Features

Fast Intra Prediction Based on the Texture Feature for H.264/AVC Encoding

2014 ◽  
Vol 9 (1) ◽  
pp. 66-76
Author(s):  
Ping Wang ◽  
Yichen Chong ◽  
Liejun Wang
Keyword(s):  
Texture Feature ◽  
Intra Prediction ◽  
Fast Intra Prediction

A Fast Intra Prediction Algorithm Based on WMSE for 360-Degree Video

2020 ◽  
Vol 34 (13) ◽  
pp. 2054032
Author(s):  
Fuqi Mao ◽  
Renbo Su ◽  
Zhi Liu ◽  
Mengmeng Zhang ◽  
Wen Yue
Keyword(s):  
Virtual Reality ◽  
Video Coding ◽  
Rate Increase ◽  
Intra Prediction ◽  
Experimental Results ◽  
Prediction Algorithm ◽  
Effective Solution ◽  
Fast Intra Prediction ◽  
Time Reduction

With the increased demand for virtual reality, 360-degree video coding becomes challenging. A 360-degree video should be projected as a planar video before encoding, but this process causes distortion whose degree depends on the latitude. Traditional coding algorithms cannot effectively adapt to this feature. In this study, a fast intra prediction algorithm based on WMSE for 360-degree video is proposed. The similarity between the mother block and child blocks can reflect whether the mother block needs to be divided. Spherical weights are introduced in WMSE, and the similarity expressed by WMSE can distinguish the video of different latitude, which is consistent with the weight characteristics of ERP projection. Experimental results show that the proposed algorithm achieves 32% time reduction, with only 0.29% luma Bjontegaard delta rate (BD-rate) increase on average. The proposed algorithm provides a more effective solution to reduce the coding complexity of 360-degree video.

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