1 results about "Video quality degradation" patented technology

The application provides a camera patrol video quality diagnosis and optimization method and system and a storage medium. The method comprises the following steps: acquiring original video stream collected by a camera, device metadata associated with the camera, and network performance data, analyzing the original video stream to extract video content quality features; constructing a heterogeneous node set based on the video content quality features, the device metadata, and the network performance data, and constructing a dynamic multi-modal spatio-temporal feature graph with edges representing the bearing or spatio-temporal correlation between nodes as a heterogeneous edge set; inputting the dynamic multi-modal spatio-temporal feature graph into a spatio-temporal graph neural network to capture the propagation path of faults in the heterogeneous node set and output the abnormal probability of each node; taking the abnormal probability and the propagation path as a query condition to match and cooperatively reason in a pre-constructed knowledge graph to determine the root cause and the corresponding evidence chain causing the video quality to decrease; and matching an optimization strategy based on the root cause. The application improves the reliability and operation and maintenance efficiency of video monitoring.