C-TTD

Context-Based Ternary Tree Decision Method in Versatile Video Coding for Fast Intra Coding (Access, 2019) Link: https://ieeexplore.ieee.org/abstract/document/8915688

Revision history

Fix the error in TEncCu.cpp in proposed_method folder, May 13, 2020

Installation and compilation

Official VTM software can be downloaded from GitLab server at: https://vcgit.hhi.fraunhofer.de/jvet/VVCSoftware_VTM

Build recommendation: using CMake.

Example of installation using MS Visual Studio on Windows:

You need Visual Studio 2015/2017 and recent CMake.
Plain version:
- cd build
- cmake .. -G "Visual Studio 14 2015 Win64"
GUI-based version:
- Ensure that the address for building binaries should contain a folder named "build" as shown in the below figure.
- Configure --> Generate

Proposed Method for TT (As in the paper)

Entire solution for the proposed method written in C++ under VS2017: code

The core part of the propsoed method is in EncoderLib. Particulary, see "EncCu.cpp"

Time Measure for BT/TT

Encoding time of CUs for BT and TT is measured on top of official VTM software. Thus, one needs to know how to handle VTM encoding.

Languague features:

C++11
Supported Compilers: MS Visual Studio 2015/2017, GCC 5.4/7.3, Xcode/clang

Description:

Global variables that measures BT/TT times. Herein we measure the time for only "xCheckRDCostIntra" that conducts intra prediction and the associated T/Q processes.
Parent CU should inherit what the type of BT/TT is for sub-CUs to child CUs. Then, the child CUs can know what the current tree type is.
Measure the time for intra prediction and accumulate the time per tree type. That means, BT and TT time of Fig. 1 in the paper precisely means intra prediction time per each tree type.

Citation

S. Park and J. Kang, "Context-Based Ternary Tree Decision Method in Versatile Video Coding for Fast Intra Coding," in IEEE Access, vol. 7, pp. 172597-172605, 2019. doi: 10.1109/ACCESS.2019.2956196