Rapid CU partition decision method for H.266/VVC

The invention provides a rapid CU partition decision-making method for H.266/VVC (Video Video Coding). The method comprises the following steps: firstly, encoding a video sequence by using a traditional encoding method, recording features related to CU classification in the encoding process, calculating score values of the features by using an improved F-score feature selection method, and takingthe features with higher score values as feature subsets; secondly, constructing an improved directed acyclic graph DAG-SVM classifier model according to the categories and the feature subsets dividedby the CU; and finally, inputting the texture complexity, the direction complexity and the quantization step length of the CU to be divided into the improved directed acyclic graph DAG-SVM classifiermodel, and predicting the optimal division category of the CU. Through the combination of the improved F-score feature selection method and the improved directed acyclic graph support vector machineDAG-SVM model, the optimal C