38results about How to "Reduce the scope of the search" patented technology

The invention provides a retrieving apparatus and method for an unmanned aerial vehicle, belonging to the field of unmanned aerial vehicles. The retrieving method for the unmanned aerial vehicle comprises the following steps: acquiring the flight position information of the unmanned aerial vehicle via a wireless network at regular time and storing the flight position information; reading the latest stored position information of the unmanned aerial vehicle after receiving a request for retrieving the unmanned aerial vehicle; positioning the location of the unmanned aerial vehicle according to the position information; acquiring the position information of an operator and determining the location information of the unmanned aerial vehicle relative to the operator according to the position information of the operator and the position information of the unmanned aerial vehicle; and outputting the location information of the unmanned aerial vehicle relative to the operator. According to the method, the position information of the unmanned aerial vehicle in flight is recorded; on the circumstance that the unmanned aerial vehicle is lost, a location range where the unmanned aerial vehicle lands or falls can be positioned according to the latest stored position information of the unmanned aerial vehicle, and the location of the unmanned aerial vehicle relative to the operator is output; thus, a searching range can be reduced, rapid retrieving of the unmanned aerial vehicle can be realized, and economic loss can be decreased.

The invention discloses a face matching method, device, equipment and a computer-readable storage medium. A target face region image and at least two face organ region images of a target face image are acquired through a candidate region network model, and then through cascading A convolutional neural network model, obtaining at least two target face feature points and corresponding feature vectors, combining the target face feature points to obtain a feature combination, according to the features of the target face feature points in the feature combination vector and the pre-established feature retrieval library, iteratively matching each combination to obtain an image set matching all feature combinations, and performing similarity calculation on the feature vector of the target face feature point and the image set to obtain the human Face matching results, the present invention can reduce the retrieval range, increase the retrieval speed, and improve the user experience.

The present invention provides a method, device, and server for opening an electronic gate. The method includes: receiving living biological feature information of a target object; wherein the living biological feature information carries account information, and / or electronic gate position information; Biometric information, to determine the user level to which the target object belongs; among them, the user level is related to the account information and / or, the electronic gate location information; determine whether the user level is equipped with the access authority of the electronic gate; if so, open the electronic gate to the target object gate. The present invention judges whether the target object is equipped with the access authority of the electronic gate by collecting the living biological feature information of the target object, and saves the step of the target object swiping the access control card or showing the ID card, thereby improving the user experience; The way of information can effectively prevent others from falsely using identity documents and other information, thereby improving the security of electronic gates.