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399 results about "Object search" patented technology

Real-time tracking method and system for ground moving object based on unmanned aerial vehicle (UAV)

The invention discloses a real-time tracking method and system for a ground moving object based on an UAV. An objection detection and identification module of a ground control station is started to process an image sequence returned from a camera, and the size and central coordinate of a target rectangular frame in a display screen of the ground station are obtained; an object tracking module is started, an algorithm fusion strategy is used to track an object, and if tracking is effective, an object positioning result is output to a tracking instruction generation module; if the object is not positioned, an object searching module is started, and the object is searched and an object positioning result is output to the tracking instruction generation module; and according to the requirement that an object image needs to be positioned in the center of the display screen of the ground station, the tracking instruction generation module generates a UAV position and posture adjusting instruction, and uploads the instruction to a UAV flight control system via a wireless transmission device to adjust the posture in real time. According to the system and method, the matching efficiency is high, realization is easy, the object can be identified effectively, and influence of background noises is avoided.
Owner:CENT SOUTH UNIV

Personalized data searching method and device

The application relates to a personalized data searching method and device. The device comprises the following steps: searching a data object according to a query word in a search request of a current user; determining a first behavior characteristic of a historic user in the search access process utilizing the query word according to a historic behavior log, and generating an intention vector of the query word; counting a second behavior characteristic of each user group to the data object according to a user attribute, and generating a preference vector of the user group; computing the similarity of the intention vector of the query word and the preference vector of each user group; using the user group corresponding to the condition that the similarity is greater than a set threshold value as a reference group for determining the intention preference of the current user; adjusting the sorting of the data objects searched by the current user through the query word through adoption of the historic behavior characteristics of the reference group. Thus the performance of a search platform is improved and promoted, the accuracy of a search result output to the user is improved, and the result, which is the most reasonable and the best for the search intention, is output for the user.
Owner:ALIBABA GRP HLDG LTD

Healthy smart household system and management method thereof

The invention discloses a healthy smart household system and a management method thereof. According to the system, environmental parameters, human body physiological parameters, household electrical appliance working parameters and other data are acquired by parameter detection equipment to perform classified storage, diagram drawing and comprehensive analysis, a part of data and the analysis result are respectively submitted to an environmental protection center, community doctors, household electrical appliance manufacturers and power supply stations to obtain feedback, and household electrical appliances are controlled according to the preset strategies, advice on health and advice on energy conservation are pushed to users and fault prediction is performed on the household electrical appliances according to the analysis result and feedback. Real-time monitoring of the state of health of people and the household electrical appliances, household electrical appliance smart control of the self-adaptive environment and human body state, household energy conservation management based on energy conservation evaluation coefficient, and a wireless object-searching system based on RFID can be realized; a no-disturbing high-efficiency communication mode of household members, equipment and environmental protection mechanisms, community hospitals, power grid companies and the household electrical appliance manufacturers is constructed; and a healthy smart household framework system with the comprehensive characteristics is formulated.
Owner:ANHUI UNIVERSITY OF ARCHITECTURE

Wireless communication system and method for determining position of target object

The invention relates to wireless communication technologies for target position measurement in the moving process, and provides a wireless communication system and method for determining the position of a target object. The problems that the target object is low in accuracy of the missing prevention function, low in speed, poor in safety, high in cost and the like are solved. The wireless communication system comprises a main machine and a secondary machine, wherein the main machine comprises a Bluetooth module, a processor module, a mobile sensor, an alarm apparatus and a positioning display, and the secondary machine comprises a Bluetooth module. The wireless communication method comprises the steps that the coordinates of three track points of the main machine are obtained through sensor signal calculation; the distance between each track point and the secondary machine is obtained through a Bluetooth RSSI technology, a security alarm prompt is given out when the distance between each track point and the secondary machine exceeds the security distance, target tracking is started, and the coordinates of the secondary machine are calculated. If the secondary machine moves, the sampling rate of the track points of the main machine is increased, and KALMAN filtering is used for correcting the sampling result so as to improve positioning accuracy. The wireless communication system and method for determining the position of the target object are high in security, short in positioning time, high in object searching speed and positioning accuracy, easy to implement and large in market size.
Owner:上海聚鹏科技有限公司

Clothes advertisement putting method and system based on video leading role identification

The invention relates to a clothes advertisement putting method and system based on video leading role identification. The method comprises the following steps: A, face identification, i.e., obtaining such information as face pictures, coordinate positions and the like in video pictures; B, face tracking, i.e., gathering face pictures of the same person in continuous video frames so as to realize preliminary clustering of faces; C, face verification, i.e., calculating a distance between every two face pictures; D, face clustering, i.e., gathering the face pictures of the same person, and finding major roles in a video; E, human body detection, i.e., obtaining correlation information of a human body in the video for each frame of the video pictures by use of an area convolution feature; F, clothes marking, i.e., classifying and marking clothes in human body pictures; G, background removal and human body segmentation and clustering, i.e., cutting human bodies from the pictures, removing backgrounds unnecessary to the human bodies, and segmenting the human body clothes into multiple areas; and H, clothes picture retrieval, i.e., retrieving advertisement objects searching for matched clothes in a database by use of the clothes.
Owner:HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL

Real-time compression tracking method of multi-characteristic transfer learning

The invention discloses a real-time compression tracking method of multi-characteristic transfer learning. The method comprises the following steps: generating a training sample, and respectively extracting a positive sample and a negative sample for training a classifier from a current frame and a video frame which previously tracks an object; extracting the characteristics of an object and a background in the training sample, projecting an extracted high-dimension characteristic to a low-dimension characteristic of a compression domain by use of two complementary sparse mapping matrixes, and generating two balanced characteristics for indicating the object and the background; constructing and updating the classifier, and training a naive Bayes classifier for classifying samples to be detected by use of the characteristic of the compression domain; and employing a secondary object search strategy. According to the invention, by use of the coarse-to-fine secondary search strategy, the quantity of generated scanning windows is reduced, the quantity of the samples to be detected is reduced, the object search process is accelerated, the scanning window with the maximum response value is taken as a tracked object, and the training sample and the classifier are updated based on this.
Owner:CHINA THREE GORGES UNIV

Spatial index structure tree based method and device for providing results of searching spatial objects

The invention aims to provide a spatial index structure tree based method and device for providing results of searching spatial objects. The method includes: acquiring a candidate spatial index structure tree; according to a predetermined unit area threshold, subjecting leaf nodes of the candidate spatial index structure tree to node decomposition until a spatial index structure tree is obtained; acquiring a spatial object query request from a user; according to a query area, performing area matching querying on the spatial index structure tree to obtain matching nodes; according to the query request, performing object matching querying on the spatial objects of the matching nodes to obtain spatial object searching results; providing the user with the spatial object searching results. Compared to the prior art, the method and device has the advantages that area matching querying is performed on the spatial index structure tree to obtain the matching nodes according to the spatial object query object from the user, object matching querying is performed on the spatial objects of the matching nodes to obtain the spatial object searching results according to the query request, and the spatial objects can be searched more efficiently.
Owner:BEIJING BAIDU NETCOM SCI & TECH CO LTD

Method and device for removing high voltage transmission line foreign matter by means of laser electrification

InactiveCN104377590ALive clear implementationWork without power outageApparatus for overhead lines/cablesForeign matterLaser light
The invention discloses a method and device for removing high voltage transmission line foreign matter by means of laser electrification. The method and device are used for removing kites, plastic films, balloons, banner advertisements and other foreign matter which threatening high voltage transmission line operation safety. According to the method and device, laser light is used as working media, a pan-tilt is used as a rotating device, foreign matter object searching, recognition and collimation are achieved through image information, laser automatic focusing is achieved through distance information, and electrification removing of foreign matter is achieved by radiating focused high energy laser on the foreign matter object. Remote, non-contact and electrification removing of the foreign matter is achieved, the foreign matter removing speed is high, all the work is completed on the ground, and a worker does not need to carry out hazardous operation such as climbing a telegraph pole and being online and gets away from a high voltage electric field. The device has the image information collection and processing function, can check the foreign matter removing effect in real time, and has the good visualization experience, and laser light can avoid a high voltage transmission line when emitted and will not damage the cable.
Owner:HUBEI SANJIANG AEROSPACE HONGFENG CONTROL

Wireless telemetering telecontrol system and method with ultra-low power consumption

The invention relates to a wireless telemetering telecontrol system and method with ultra-low power consumption, aiming at achieving an ultra-low power consumption state that a controlled end is in a periodically dormant state and is used for flashly monitoring signals after wake-up. When work commands need to be sent to the controlled end, command signals are continuously sent to the controlled end by a control end in a short time; at the moment of wake-up, the controlled end only receives one-bit or plural limited-bit data signals and checks the RF characteristics thereof, particularly spread spectrum code characteristics; and only when the RF characteristics are verified, an entire data signal packet is received in a time-delay manner and then is analyzed. When the power consumption ofthe controlled end is greatly reduced, a fast wireless channel is maintained between the control end and controlled equipment, thereby opening a door for the wide application of wireless acquisition and transmission of sensor data as well as the wireless telemetering telecontrol of equipment in the IOT (Internet Of things) market. The invention also provides a long-range GPS (Global Positioning System) which is independent of a wireless mobile public network, as well as a simple and effective short-range object searching method.
Owner:WESTVALLEY DIGITAL TECH
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