Texture-intensity-based fast coding unit size determination method for high-efficiency video coding intracoding

Xiangqun Li; Xiaohai He; Xiaohong Wu; Zhengyong Wang

doi:10.1117/1.JEI.23.5.053005

15 September 2014 Texture-intensity-based fast coding unit size determination method for high-efficiency video coding intracoding

Xiangqun Li, Xiaohai He, Xiaohong Wu, Zhengyong Wang

Author Affiliations +

Journal of Electronic Imaging, Vol. 23, Issue 5, 053005 (September 2014). https://doi.org/10.1117/1.JEI.23.5.053005

Abstract

The quad-tree-based picture partition scheme in high-efficiency video coding (HEVC) provides significant coding efficiency improvements, particularly for high-resolution videos. However, its flexible block partitions and numerous intraprediction modes result in a substantial increase in computational complexity compared with previous video coding standards because of the necessity of determining the best coding unit (CU) partitions. A fast HEVC intracomputation method that uses image textural feature information instead of the traditional rate-distortion (R-D) cost value is proposed. This information is used to control the CU partition at the exterior of the xCompressCU function in the HEVC model coding framework. The method is comprised of two key steps: (1) simulation of the CU partition of the current frame image and calculation of the strength value of the textural features of each sub-block; and (2) disregard of some CU partition depths in the xCompressCU function, with no R-D cost calculation being required in the corresponding prediction mode. By leveraging these two steps, the computational complexity of the encoder is effectively lowered. Experimental results indicate that the proposed method reduces the coding time computational complexity of the current HEVC model by approximately 39.08% with negligible loss of coding efficiency.

Citation Download Citation

Xiangqun Li, Xiaohai He, Xiaohong Wu, and Zhengyong Wang "Texture-intensity-based fast coding unit size determination method for high-efficiency video coding intracoding," Journal of Electronic Imaging 23(5), 053005 (15 September 2014). https://doi.org/10.1117/1.JEI.23.5.053005

Published: 15 September 2014

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available