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647 results about "Motion recognition" patented technology

Deep learning-based human body motion recognition method of multi-channel image feature fusion

The invention discloses a deep learning-based human body motion recognition method of multi-channel image feature fusion. The method comprises: (1) extracting original RGB pictures from videos, and calculating dynamic graphs and optical flow graphs of the segmented videos through the RGB pictures; (2) carrying out cropping operations on the input pictures to expand a training data set; (3) constructing a three-channel convolutional-neural-network, and respectively inputting lastly obtained video segments into the three-channel convolutional-neural-network to carry out training to obtain a corresponding network model; and (4) for a to-be-recognized video segment, extracting original RGB pictures, calculating dynamic graphs and optical flow graphs corresponding thereto, and obtaining a recognition result of a final motion category. According to the method, the three-channel convolutional-neural-network is utilized for learning essential features of data for original input of different morphologies, multi-channel dense fusion operations are carried out on the data of the three morphologies in the middle of the network, expression ability of the features is improved, and purposes of multi-channel information sharing and a high accuracy degree are achieved.
Owner:SOUTH CHINA UNIV OF TECH

Man-machine interaction method and equipment based on acceleration sensor and motion recognition

Provided are a man-machine interaction method and man-machine interaction equipment based an acceleration sensor and motion recognition. The method includes the following steps: (1) a three-shaft acceleration sensor located on the man-machine interaction equipment collects X-axis acceleration data, Y-axis acceleration data and Z-axis acceleration data, and conveys the X-axis acceleration data, the Y-axis acceleration data and the Z-axis acceleration data to a controller of the man-machine interaction equipment; (2) the controller pre-processes the acceleration data, and removes noise and gravitational acceleration influences to obtain a precise X-axis acceleration sequence, a precise Y-axis acceleration sequence and a Z-axis acceleration sequence and to cache the acceleration sequences; (3) an acceleration threshold value is set, when the maximum of the X-axis acceleration sequence, the Y-axis acceleration sequence and the Z-axis acceleration sequence in cache is larger than the acceleration threshold value, the step (4) is carried out, and otherwise the step (1) is carried out; (4) motion mode recognition is carried out on the obtained X-axis acceleration sequence, the Y-axis acceleration sequence and the Z-axis acceleration sequence by means of a pre-trained classifier; (5) each motion mode corresponds to a trigger command, and the controller executes the corresponding trigger command according to a result after the motion mode recognition and provides corresponding feedback for a user; and (6) the steps from (1) to (5) are repeated.
Owner:伍斌

Human body motion feature extraction method based on global remarkable edge area

The invention discloses a human body motion feature extraction method based on a global remarkable edge area, comprising steps of using a contrast between an area and a whole image to calculate the significance, reducing the color quantity of the color space, smoothing the significance of the color space, calculating the significance area according to the space relation of the neighboring areas, performing morphology gradient changing on the foreground area segmented by a binarized threshold to generate a global remarkable edge area, traversing strong corner points of all grids of the video frames under various sizes, collecting key characteristic points, the light stream amplitude value of which is not 0, in the remarkable edge area, solving the displacement of the strong corner point according to the corrected light stream field, and forming the human body motion local time space characteristic by using the strong corner point continuous multi-frame displacement locus and the neighbourhood gradient vector. The invention extracts the motion characteristics through global remarkable edge area, eliminates the background noise points irrelevant to the human body motion, removes the affect on the light stream calculation by the camera motion, improves the accuracy of the human body motion local time space characteristic description and improves the human body motion recognition rate.
Owner:WUHAN UNIV

Human body forearm surface electromyogram signal acquisition and pattern recognition system

The invention discloses a human body forearm surface electromyogram signal acquisition and pattern recognition system comprising an acquisition circuit, a PCI (programmable communication interface) data acquisition card and a signal processing and motion recognition unit, wherein the acquisition circuit is used for acquiring, filtering and amplifying a human body forearm surface electromyogram signal, the PCI data acquisition card is used for carrying out AD (analog-to-digital) sampling conversion on an acquired analog electromyogram signal to obtain a digital electromyogram signal, and the signal processing and motion recognition unit is used for processing electromyogram signals acquired from four muscles, namely brachioradial muscle, extensor carpi radialis longus, musculus extensor carpi ulnaris and musculus flexor carpi radialis of the forearm of the right hand of the human body, extracting the characteristics of the electromyogram signals and recognizing six motions, namely making a fist by a wrist of the human body, stretching out the hands, turning the hands down, turning the hands up, turning the hands inward and turning the hands outward by combining a support vector machine. According to the invention, a surface electromyogram (SEMG) online mode pattern recognition study platform with low cost, good instantaneity and high recognition rate is realized.
Owner:WUHAN UNIV OF TECH
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