6results about How to "Reduce detection error rate" patented technology

The application discloses a method for determining the oil adsorption capacity of shale, comprising the following steps: (1) pretreatment of a shale sample; (2) preparation of a crude oil solution; (3) placing a pretreated shale powder sample with a mass of m1 in the crude oil solution for an adsorption experiment; (4) centrifugal weighing to obtain the mass m2 of the shale powder sample in a liner tube; and (5) calculating the shale adsorption capacity Sp by using a model for determining the oil adsorption capacity of shale, wherein the model is shown in formula (1): Sp=(m2-m1) / m1 (1), wherein Sp represents the model for determining the oil adsorption capacity of shale, m2 represents the mass of the shale after oil adsorption, and m1 represents the mass of the shale before oil adsorption. The application further discloses an application of the method for determining the oil adsorption capacity of shale in shale oil exploration.

This application provides an obstacle detection method, apparatus, electronic device, and machine-readable storage medium. The method includes: acquiring binocular depth images using a binocular camera deployed on a mobile robot; extracting obstacle contours based on the binocular depth images to obtain initial obstacle contours; for any obstacle contour, determining a first obstacle ROI region in a first grayscale image and a second obstacle ROI region in a second grayscale image corresponding to the obstacle contour; determining a first disparity value of the obstacle corresponding to the obstacle contour based on the first and second obstacle ROI regions; and determining whether the obstacle corresponding to the obstacle contour is a credible obstacle based on the first and second disparity values. This method can improve the reliability of obstacle detection and reduce the implementation cost of obstacle detection.

The utility model provides a color broadcast detection device. The color broadcast detection device comprises a bearing plate and a control circuit arranged on the bearing plate, the control circuit comprises a sound controller, a plurality of switches and a connecting seat; the sound controller is provided with a VCC pin, a GND1 pin, a plurality of OUT pins and a GNDSW pin; the connecting seat is provided with a power supply pin and a plurality of signal pins; the VCC pin is connected with a positive electrode of a power supply, and the GND1 pin is connected with a negative electrode of the power supply; the power pin is connected with a power anode; one end of each switch is connected with one OUT pin and one signal pin, the other end of each switch is connected with the power supply cathode, and the GNDSW pin is connected with the other end of each switch and is connected with the power supply cathode. Compared with the prior art, the light color detection device has the advantages that the sound controller is matched with the switch to detect the light color, the technical problem that defective products are not detected due to the fact that detection personnel easily remember the light color which should be lighted by the light mistakenly when multi-color light detection is carried out manually in the prior art is solved, and the probability that the detection personnel carry out mistaken detection is effectively reduced.

This invention discloses a camera detection method and system based on electromagnetic radiation signals. The method includes the following steps: acquiring radio frequency signals from the environment and performing preprocessing and spectrum analysis; detecting and marking peak points in the spectrum; grouping the marked peak frequencies and calculating the basic interval frequency of each group; determining whether the basic interval frequency of each group matches the camera clock frequency range; if a match is found, retaining the corresponding peak frequency group; discarding or merging peak frequencies; and further determining whether horizontal synchronization signal component coupling occurs within each peak frequency of the retained peak frequency group; if such coupling occurs, a camera device is detected. This invention can utilize the specific signal spectrum generated by the coupling modulation of the data signal line and clock signal line on the CSI connection cable during camera operation to detect unknown, concealed cameras. It is suitable for private occasions such as confidential meetings and private conversations, with an effective distance of 20 centimeters.

This invention discloses a Transformer-based human pose estimation method. This method extracts global and local features through a dual-branch network combining CNN and Transformer. Subsequently, a multi-stage regression method of "human center-limb trunk-keypoints" is used to directly regress human keypoints. Compared with traditional detection methods, this invention can simultaneously consider both global and local features, overcoming the shortcomings of CNN ignoring global features and Transformer ignoring local features. Furthermore, the multi-stage regression method adds "limb trunk" intermediate points, reducing the regression difficulty for keypoints far from the human center, improving the accuracy of keypoint regression, and further enhancing the accuracy of human pose estimation.

This invention discloses a method for detecting recording devices based on electromagnetic signals, comprising the following steps: acquiring radio frequency signals in the environment; performing spectrum analysis on the radio frequency signals after filtering, denoising, and smoothing; searching for peak points belonging to the frequency band of the electromagnetic radiation signal of the recording device in the spectrum, and calculating the average peak interval; matching the peak interval with the frequency feature library of the recording device's AD conversion drive signal, and confirming the detection of the recording device if they are equal. This invention can detect unknown and concealed recording devices by utilizing the electromagnetic radiation signals generated by the AD conversion of the recording device during normal operation, and can locate the device by multiple detections from different directions. It is suitable for private occasions such as confidential meetings and private conversations, with an effective distance of 20 centimeters.