2results about How to "Realize active defense" patented technology

This invention relates to the field of image steganalysis defense technology, and particularly to an active image steganalysis defense method and system based on signal enhancement. The method involves adding interference noise to the image to be processed based on signal texture features to enhance the stegana signal. The enhanced image is then input into a pre-trained active image steganalysis defense network. This network restores the stegana signal features and recovers the original carrier image from the processed image through an inverse difference operation. The active image steganalysis defense network employs a dual-channel parallel network model to reconstruct the stegana signal distribution by mining the correlation and spatial relationships between the stegana signals. This invention does not require knowledge of the steganalysis algorithm type and embedding rate. Through image noise addition and neural network modeling, it achieves dual destruction of secret information in the image under a heterogeneous balance state, while simultaneously restoring the quality of the original image.

This invention relates to the field of smart park operation and maintenance management technology, and discloses a smart park operation and maintenance management method and system based on digital twins. The method utilizes multi-source sensing devices deployed within the smart park to collect real-time physical space operation status and environmental data, performing spatiotemporal alignment and semantic fusion to form integrated twin data. Based on this data, multi-granularity geometric models and multi-physics coupling mechanism models of the park's physical entities are constructed, and fused to generate a digital twin with a unified semantic description. Operation and maintenance scenario disturbances are injected into the digital twin, and simulation calculations are performed to obtain the evolution trajectory of key performance indicators. Based on this, an optimization algorithm dynamically generates operation strategies for adjustable resources within the park, synchronously updating the digital twin's state. This invention achieves dynamic optimization of operation and maintenance management and efficient resource allocation, improving the resilience and intelligence level of park operation.