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33results about How to "Avoid less accurate" patented technology

Positioning and navigation system and method of robot, storage medium and robot

The invention discloses a positioning and navigation system and method of a robot and relates to the technical field of robots, aiming at solving the problem that the orientation judgment accuracy isrelatively low when a UWB (Ultra Wideband) technology is used for positioning and navigating the robot. The system comprises a plurality of labels, a base station, an electronic compass, a gyroscope and a controller. The method comprises the following steps: calculating a position coordinate of each label in real time and judging whether position coordinate data of each label is reliable or not; if so, determining a relation between a mounting position of each label and the orientation of the robot and combining the position coordinate of each label to determine an orientation angle of the robot; if not, judging whether detection data of the electronic compass is reliable or not; if the detection data is reliable, calculating according to the detection data of the electronic compass and determining the orientation angle of the robot; initializing the detection data of the gyroscope to be 0; when the detection data is not reliable, determining the orientation angle of the robot according to the detection data of the gyroscope. The positioning and navigation system and method of the robot can be applied to a positioning and navigation process of the robot.
Owner:CLOUDMINDS SHANGHAI ROBOTICS CO LTD

Image classification method and device, computer equipment and storage medium

The invention provides an image classification method and device, computer equipment and a storage medium, and belongs to the technical field of image processing. The method comprises the following steps: inputting a target image into an image classification model, classifying the target image based on the image classification model, and outputting a plurality of first confidence coefficients; determining second confidence coefficients of at least two object types corresponding to the at least two image clusters according to the first confidence coefficients of the at least two image clustersmeeting the target condition; and determining at least one object type corresponding to the target image according to the second confidence coefficients of the at least two object types. The technicalscheme is adopted, the problem that the accuracy is low due to the fact that the confidence that the target image belongs to the object type is directly output is avoided, the second confidence of the at least two object types is determined according to the first confidence of the at least two image clusters meeting the target condition, and then the at least one object type is determined, so that the accuracy of the at least one object type is high.
Owner:广州腾讯科技有限公司

Unmanned aerial vehicle flight control method and device, electronic equipment and storage medium

The invention provides an unmanned aerial vehicle flight control method and device, electronic equipment and a storage medium, and relates to the technical field of aerial photography. The method comprises the steps: acquiring the shot images of multiple historical time periods before the current moment, wherein each historical time period comprises multiple frames of shot images; respectively determining matching information of the multiple frames of shot images in each historical time period, wherein the matching information is used for representing the overlapping degree of the multiple frames of shot images; and adjusting the flight speed of the unmanned aerial vehicle at the current moment according to the matching information of the multiple frames of shot images in each historical time period. According to the scheme, the unmanned aerial vehicle can fly at the optimal flight speed to shoot the image, so that the overlapping rate of the shot image meets the requirement, the problem that the accuracy of the shot image obtained by flying at the fixed flight speed is low is solved, the accuracy of the aerial survey shot image is effectively improved, and the quality of image three-dimensional reconstruction is further improved.
Owner:GUANGZHOU XAIRCRAFT TECH CO LTD

Robot positioning and navigation system and method, storage medium, robot

The invention discloses a positioning and navigation system and method of a robot and relates to the technical field of robots, aiming at solving the problem that the orientation judgment accuracy isrelatively low when a UWB (Ultra Wideband) technology is used for positioning and navigating the robot. The system comprises a plurality of labels, a base station, an electronic compass, a gyroscope and a controller. The method comprises the following steps: calculating a position coordinate of each label in real time and judging whether position coordinate data of each label is reliable or not; if so, determining a relation between a mounting position of each label and the orientation of the robot and combining the position coordinate of each label to determine an orientation angle of the robot; if not, judging whether detection data of the electronic compass is reliable or not; if the detection data is reliable, calculating according to the detection data of the electronic compass and determining the orientation angle of the robot; initializing the detection data of the gyroscope to be 0; when the detection data is not reliable, determining the orientation angle of the robot according to the detection data of the gyroscope. The positioning and navigation system and method of the robot can be applied to a positioning and navigation process of the robot.
Owner:CLOUDMINDS SHANGHAI ROBOTICS CO LTD

Environmental map generation method and device based on ultrasonic waves

The invention discloses an environment map generation method and device based on ultrasonic waves. The method comprises the following steps: judging whether a plurality of ultrasonic measurement values have conflicts or not; if so, forming a conflict sequence by at least two ultrasonic measurement values with conflicts, and initializing the confidence coefficient of each ultrasonic measurement value in the conflict sequence; according to the initialization confidence of the current ultrasonic measurement value in the conflict sequence and the initialization confidence of the ultrasonic measurement value conflicting with the current ultrasonic measurement value, updating the confidence of the current ultrasonic measurement value to obtain the target confidence of the current ultrasonic measurement value; removing the ultrasonic measurement value with the minimum target confidence in the conflict sequence; executing the above process circularly until no conflict exists in the remaining ultrasonic measurement values, and obtaining a target ultrasonic measurement value; and updating the historical environment map according to the current pose information determined by the pose information of the vehicle at the previous moment and the current running state of the vehicle and the target ultrasonic measurement value.
Owner:BEIJING JINGWEI HIRAIN TECH CO INC

Method, device and calibration device for determining transmission line standard device

The invention discloses a method and equipment for determining a transmission line standard device and calibration equipment. The method comprises the steps of determining a to-be-calibrated band of to-be-calibrated equipment; selecting a first frequency in the to-be-calibrated band, and calculating a channel combine corresponding to the first frequency; determining the thickness of the transmission line standard device corresponding to the to-be-calibrated band according to a set phase change interval and the channel combine corresponding to the first frequency; and determining the transmission line standard device according to the thickness. The thickness of the transmission line standard device is determined according to the set phase change interval and the channel combine corresponding to the first frequency included in the to-be-calibrated band, and the transmission line standard device is determined based on the determined thickness, so that the thickness of the determined transmission line standard device is obviously increased, and the problem of low accuracy of calibration on a vector network analyzer with a TRL (Transistor Resistor Logic) method due to deformation of the transmission line standard device can be effectively solved.
Owner:BEIJING INST OF RADIO METROLOGY & MEASUREMENT
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