NPDO: Neural Prediction Direction Optimizer for Fast VVC Intra Coding
This paper proposes NPDO, a hybrid neural framework combining multi-scale feature extraction with hierarchical CNN and Vision Transformer architectures to intelligently prune the VVC intra-prediction search space, achieving a 54.0% reduction in encoding time with only a 1.18% BD-Rate increase compared to the VTM 23.0 reference.