Implementation Codes

We optimize the implemention codes of three representative GFVC works, i.e., FOMM, CFTE and FV2V, and further provide the unified codes regarding the encoder and decoder processes.

• Download the CFTE-checkpoint.pth.tar, FOMM-checkpoint.pth.tar, and FV2V-checkpoint.pth.tar to the path ./GFVC/CFTE/checkpoint/, ./GFVC/FOMM/checkpoint/, and ./GFVC/FV2V/checkpoint/ respectively. The unified checkpoint dir is available at this link.
• The overall testing dataset is available at this link.

In details, we provide the specific introductions about the hyper parameters and their definitions in the GFVC software tools as follows,

• --original_seq: the path to the input test sequence
• --encoding_frames: the number of frames to be encoded
• --seq_width: "the width of encoding frames
• --seq_height: the height of encoding frames
• --quantization_factor: the quantization factor for the type conversion (i.e., from float-type to int-type) for the residual of feature parameter
• --Iframe_QP: the quantization parameter for encoding the base picture
• --Iframe_format: the coded color format for the base picture, e.g., YUV 420 or RGB 444

Encoding/Decoding Porcesses

The platform details can be described as follows,

• The pretrained analysis/synthesis models and codes of the three representative GFVC algorithms are encapsulated in the GFVC folder.
• The corresponding interfaced functions regarding the encoder and decoder are defined in CFTE_Encoder.py, CFTE_Decoder.py, FOMM_Encoder.py, FOMM_Decoder.py, FV2V_Encoder.py and FV2V_Decoder.py.
• The arthmetic and vtm folders include the packaged tools regarding the context-adaptive arithmetic coder for feature parameter encoding and the latest VVC software VTM 22.2 for base picture encoding.
• The shell file (i.e., RUN.sh ) and batch execution code (i.e., RUN.py ) are provided to complete the encoding and decoding processes.

The usages can be provided as follows,

• Modify the corresponding hyper parameters in RUN.py. The specific details have been provided in this RUN.py.

Rate Calculation and Distortion Evaluation

In the folder evaluate, we further provide the codes to calculate the rate and distortion.

• multiMetric.py: a unified code including DISTS/LPIPS/PSNR/SSIM
• getbits.py: calculate the coding bits of base picture (VVC bitstream) and feature parameter (feature bitstream)

Anchor Comparison (VTM 22.2)

VTM 22.2 is used and the test is conducted under low-delay B (LDB) configuration. And we provide the batch execution code to encode these sequences and obtain the coresponding rate-distortion performance. The codes can be seen in folder VVC_anchor. You can execute RUN_Encode.py and RUN_Decode.py.

Acknowledgement

We really appreciate all authors for making their codes available to public.

• The GFVC software package includes FOMM, CFTE and FV2V.
• The testing dataset is sourced and preprocessed from VoxCeleb and CFVQA.
• The quality assessment metrics include DISTS and LPIPS.

BibTeX

@inproceedings{Chen_JVET_AG0042,
            title={AHG 16: Proposed Common Software Tools and Testing Conditions for Generative Face Video Compression},
            author={Bolin, Chen and Jie, Chen and Ru-Ling, Liao and Yan, Ye and Shiqi, Wang},
            journal={The Joint Video Experts Team of ITU-T SG 16 WP 3 and ISO/IEC JTC 1/SC 29, doc. no. JVET-AG0042},
            year={2024}
          }

📧 Contact

If you have any question or collaboration need (research purpose or commercial purpose), please email bolinchen3-c@my.cityu.edu.hk or chenbolin.chenboli@alibaba-inc.com.