4results about How to "Reduce data storage pressure" patented technology

This invention relates to the field of UAV pose map optimization technology, and particularly to a method for optimizing the pose map of a UAV monocular camera. The method includes: blurring different image frame data, constructing a Gaussian pyramid, and downsampling; determining candidate feature points by subtracting Gaussian blurred images of adjacent scales; accurately determining the positions of candidate feature points on the image frame; removing low-contrast candidate feature points and edge response feature points to obtain the final feature points; and using the LM algorithm to adjust the UAV attitude parameters and optimize the pose map for discontinuous image frame data. The process of Gaussian difference point interest detection on continuously acquired image frame data suppresses noise in the image frames, effectively smoothing noise in the image. The resulting pose map is smoother with smaller gradient changes, improving the robustness of attitude estimation. The pose map optimization process expands the scope of pose map optimization, allowing optimization even for discontinuous images.

This application discloses a method, system, device, and medium for processing blockchain consensus data, including: packaging business data generated by a database and sending it to a block-producing node; the block-producing node generating first signature data to be agreed upon based on the business data; sending the business data and the first signature data to a consensus node for consensus processing based on a target compressed data packet structure to obtain consensus data; wherein the target compressed data packet structure includes a target file header, a data area, and a file tail; wherein the target file header includes the original file header and file tail; packaging the consensus-adjusted business data into blocks for on-chain processing and storing the consensus data; when the number of consensus data groups stored in the blockchain blocks reaches a preset threshold, performing backup-based deletion processing on the consensus data. This application can improve consensus efficiency and block generation speed, reduce the storage pressure on nodes, effectively improve the operational stability of the blockchain system, and can be widely applied in the field of blockchain technology.

The invention relates to the technical field of map slicing, and discloses a freehand map hierarchical slicing method for agriculture tourism science and technology service, which comprises the following steps: acquiring a freehand map of a target area, determining a minimum enclosing rectangle covering the freehand map, and acquiring geographic coordinates of vertexes of the minimum enclosing rectangle; performing feature point detection on the hand-drawn map to obtain a feature point distribution map; determining a scaling hierarchy, slicing the hand-drawn map, and determining the row and column numbers of each tile; calculating a first coordinate of each tile, and calculating a second coordinate based on the geographic coordinate; judging whether the range covered by the first coordinate is within the range covered by the second coordinate, if so, calculating the pixel coordinate of the tile corresponding to the first coordinate in the hand-drawn map, and otherwise, setting the tile corresponding to the first coordinate as blank; querying feature points covered by the pixel coordinates in the feature distribution map, and resampling tiles corresponding to the pixel coordinates based on the feature points to obtain new tiles corresponding to each tile; and storing all the new tiles according to the scaling hierarchy and the row and column number corresponding to each tile. According to the invention, the quality of the hand-drawn map slice can be effectively improved; and meanwhile, the data storage pressure, the network transmission pressure and the front-end rendering pressure are reduced for the tile service application.

The embodiment of the application provides a wind power system. The wind power system comprises a master control system, a plurality of monitoring systems and an edge computing terminal. The plurality of monitoring systems are used for collecting first data signals of wind turbines. The plurality of monitoring systems are respectively in communication connection with the master control system and the edge computing terminal. The plurality of monitoring systems are used for respectively sending at least part of the collected first data signals to the master control system and the edge computing terminal. The master control system and the edge computing terminal are in bidirectional communication connection. The master control system is used for sending second data signals of the wind turbines to the edge computing terminal. The edge computing terminal generates a control signal based on at least part of the received first data signals and the second data signals and returns the control signal to the master control system. Thus, the data storage pressure and the calculation load of the master control system can be effectively reduced.