10results about How to "Avoid scanning" patented technology

The invention provides an unmanned aerial vehicle adaptive path planning method and device based on multi-resolution semantic segmentation, equipment and a storage medium, and relates to the technical field of unmanned aerial vehicle path planning. According to the method, a GCN is selected as a to-be-trained model; for a target area, marking topographic data of the target area, and training the GCN by using the topographic data to obtain a trained model; calculating an initial path for guiding the unmanned aerial vehicle to fly at a fixed height above the target area based on a zigzag mower strategy; the unmanned aerial vehicle flies according to the initial path and obtains a current aerial image every time the unmanned aerial vehicle arrives at an aerial photography point; semantic segmentation of pixels is carried out on the current aerial image; taking the waypoint of the unmanned aerial vehicle at the current moment as input, and outputting an aerial photography point at the next moment according to the semantic segmentation result; and repeating the process to obtain a corrected unmanned aerial vehicle path. According to the method, accurate semantic segmentation results can be provided at different flight heights, so that the path planning and data acquisition efficiency of the unmanned aerial vehicle is optimized.

The invention relates to the technical field of network space security, in particular to an IPv6 address prediction method and system based on a double-space tree, and the method comprises the steps: dividing an address seed set into seed address subsets of different BGP prefix spaces according to an open-source BGP prefix list; generating a double-address space tree by taking the seed address subset of each BPG prefix space as a unit; extracting leaf nodes in the prefix space tree and the suffix space tree and splicing the leaf nodes in the prefix space tree and the suffix space tree to generate a candidate address mode; and according to the number of the seed addresses in the BGP prefix space, carrying out descending sort on the BGP prefixes and setting address generation priorities, so as to carry out address generation in the corresponding BGP prefix space according to the sequence of the address generation priorities, and obtaining a candidate address set in the corresponding BGP prefix space through address alias deletion. According to the method, active addresses and more / 64 active address prefixes can be found more efficiently, scanning of a large number of possibly inactive addresses in a BGP prefix space is avoided, and the efficiency of an IPv6 address prediction process is improved.

The invention discloses a streaming hypertext content processing method, system and device and a storage medium, and relates to the field of data processing. In the method, data fragments of streaming hypertext content are continuously received until HTTP head information is completely obtained, and a hook point is triggered; on the hook point, calling a registered target plug-in to judge whether the streaming hypertext content needs to be subjected to customized modification or not according to the HTTP header information; when the streaming hypertext content needs to be subjected to customized modification, a customized modification condition is formed according to the target plug-in, and a target data fragment meeting the customized modification condition in the subsequently received data fragments is directly and correspondingly modified; and transmitting the modified data content as a new data fragment. By implementing the technical scheme provided by the invention, efficient and accurate streaming hypertext content customization processing can be realized.

The invention relates to the technical field of two-dimensional code payment, in particular to a two-dimensional code payment system for analyzing two-dimensional code risks. The system comprises a scanning analysis unit, a malicious risk unit and an anomaly detection unit. A scoring risk module obtains analyzed two-dimensional code source data of a collection merchant from a source analysis module, a malicious identification module obtains identified malicious two-dimensional code data, an anomaly detection unit obtains detected abnormal behavior data and analyzes a comprehensive two-dimensional code risk value; and performing final payment auditing according to the analyzed comprehensive two-dimensional code risk value, auditing whether the merchant two-dimensional code has the two-dimensional code risk or not, verifying the validity of the two-dimensional code from multiple angles by combining different data, avoiding the limitation of a single data source, and meanwhile, through comprehensive analysis, obtaining the two-dimensional code risk value of the merchant. According to the method, the malicious two-dimensional code can be recognized and prevented from being spread in the electronic equipment at the payment end earlier, the potential two-dimensional code risk and the probability of phishing website events can be found accurately, and the safety of two-dimensional code payment is enhanced.

The invention provides a network residing method and device, a storage medium and electronic equipment, and the method comprises the steps: obtaining a target frequency band list, and enabling a target frequency band in the target frequency band list to be determined based on a first frequency band supported by terminal equipment and a common frequency band in second frequency bands supported by network equipment. And then, performing cell frequency point scanning in each target frequency band, and residing in a first cell corresponding to a first frequency point in response to the scanned first frequency point meeting a residing condition. According to the network residing method provided by the embodiment of the invention, the terminal equipment can determine the first frequency point meeting the residing condition from the common frequency band in the first frequency band supported by the terminal equipment and the second frequency band supported by the network equipment, so that compared with the prior art that the first frequency point meeting the residing condition is determined from all the frequency bands supported by the terminal equipment, the residing efficiency is improved; unnecessary frequency band scanning can be avoided, and rapid network residing is facilitated.

This application relates to a method and system for comparing table data in a row-oriented storage database. The method includes: acquiring the database to be verified; collecting business characteristics, constructing a B+ tree index, and partitioning the database; sequentially locating the difference partitions, difference rows, and difference fields based on the B+ tree index and partitioning combined with hash calculation; and outputting the comparison results based on the difference fields. This embodiment achieves rapid location and on-demand reading of difference partitions in a row-oriented storage database. By sequentially locating the difference partitions, difference rows, and difference fields based on the B+ tree index and partitioning combined with hash calculation, it achieves rapid identification of the partitions containing the difference data, avoiding a full scan of irrelevant data, thereby significantly reducing disk I / O, memory usage, and bandwidth consumption, improving verification efficiency, and reducing resource overhead.

The invention discloses a preview imaging method, device and equipment for a transparent fluorescent sample, and the method comprises the steps: carrying out the shooting of a transparent fluorescent slice, and obtaining a transparent preview; switching a fluorescent light filter or a light source until a plurality of fluorescent channels for developing the transparent fluorescent section are obtained; determining a preview scanning area according to a sample position range in the transparent preview, selecting a target fluorescent channel from a plurality of fluorescent channels to perform coverage scanning on the transparent preview based on the determined preview scanning area to obtain a plurality of view images, and splicing the plurality of view images to generate a large preview scanning image; zooming the large preview scanning image to be the same as the preview scanning area in size, and replacing a corresponding area in the transparent preview image with the zoomed large preview scanning image to obtain a replaced preview scanning image; and identifying and framing a sample scanning area in the preview scanning image to obtain a target preview image. A sample scanning area can be clearly identified and framed, and the accuracy and efficiency of scanning are improved.

The invention belongs to the technical field of distributed optical fiber sensing, and particularly relates to a BOCDA optical fiber sensing device and method based on linear frequency modulation pulse pumping. Comprising a laser, an optical fiber coupler, a first electro-optic phase modulator, a first erbium-doped optical fiber amplifier, an optical isolator, a sensing optical fiber, a second electro-optic phase modulator, an electro-optic intensity modulator, an electro-optic pulse signal modulator, a scrambler, a second erbium-doped optical fiber amplifier, an optical circulator, an optical filter, a photoelectric detector and a low-pass filter. And a data acquisition and analysis system. Due to the fact that the frequency of the pump light pulse changes linearly, the change of the probe light amplitude along with time directly carries Brillouin gain spectrum information, scanning of the frequency difference of the pump probe light is avoided, one-time measurement can be completed only through one-dimension scanning, and the measurement time of the BOCDA optical fiber sensor is greatly shortened.

The embodiment of the invention discloses an asset surveying and mapping method and device suitable for a rail transit comprehensive monitoring system. The method comprises the following steps: acquiring flow data from a network of the rail transit comprehensive monitoring system through a mirror image flow technology; analyzing the flow data to obtain network information of assets; and performing active scanning and asset information identification of assets according to the network information, and outputting the asset information. By means of the mode, more comprehensive and rich data can be obtained without disturbance, network fluctuation is reduced, and blind whole-network-segment and whole-port scanning is avoided.

The invention discloses an offline equipment instruction caching method and device, electronic equipment and a medium. According to the method, a queue is initialized, instructions in a current time range are filled, new instructions are received in real time, classified and stored, unexpired instructions are quickly issued when equipment is online, expired instructions are periodically cleaned, and an instruction cancelling function is supported. Through a dynamic window switching mechanism, efficient management of instructions and reasonable utilization of resources are achieved, and the problems of storage waste and low performance existing in a traditional delay queue and Redis scheme are solved. According to the method, a mechanism of two timing queues is used, only the cache instructions in the two time windows are loaded, and the cache instruction of the next time window is scanned only when the queues are switched, so that frequent database scanning can be avoided when the time windows roll. The embodiment of the invention can effectively reduce the consumption of memory resources, efficiently realize the caching of offline equipment instructions, and can be widely applied to the technical field of data processing.