Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

277 results about "Dynamic pattern" patented technology

Dynamic pattern definition, dynamic pattern meaning | English dictionary. dynamic. 3 (Also) dynamical characterized by force of personality, ambition, energy, new ideas, etc. n the range of signal amplitudes over which an electronic communications channel can operate within acceptable limits of distortion.

Living body detection method, computer device and computer readable storage medium

The invention discloses a living body detection method, a computer device and a computer readable storage medium. In the living body detection method, a multi-layer perceptron is trained by using a preset training set to determine a multi-layer perceptron model, continuous N-frame human face images to be detected is obtained, an intermediate frame human face image of the consecutive N-frame humanface images is switched from a first color space to a second color space, textural features of the intermediate frame human face image and dynamic pattern features of the continuous N-frame human faceimages are extracted, fusion features are acquired by fusing the textural features and the dynamic pattern features, the multi-layer perceptron model is used to perform feature mapping on the fusionfeatures, mapping features are output and normalized, a predicted probability value of a living body tag and a predicted probability value of a non-living body tag are obtained, and then the continuous N-frame human face images are determined as living body or non-living body human face images. The fusion features include the textural features and the dynamic pattern features, and thus the recognition accuracy and safety of living body detection can be improved.
Owner:SHENZHEN LIFEI TECHNOLOGIES CO LTD

DSP and FPGA parallel multi-mode star image processing method for star sensor

The invention discloses a DSP and FPGA parallel multi-mode star image processing method for a star sensor, the processing algorithm of a star image is classified and optimized according to different working modes of the star sensor, and star image processing can be completed jointly by the DSP and the FPGA. The method comprises the following steps: under a capture mode, the FPGA completes image filtering processing to obtain a quasi star point pixel, and the DSP performs capture mode processing on the quasi star point pixel; under non-high-dynamic tracking mode, the FPGA completes image window intercepting processing, and the DSP performs non-high-dynamic tracking mode processing on a window pixel; under a high-dynamic mode, the FPGA completes the image window intercepting processing while performing pixel binning, and the SP performs non-high-dynamic tracking mode processing on the window pixel; star image data preprocessed by the FPGA can be directly stored in the chip of the FPGA, and an external image memory is not needed. According to the method, the star image processing speed is effectively increased on the premise that the accuracy is not affected, and the system configuration is simplified.
Owner:BEIJING INST OF CONTROL ENG

Time-series similarity measurement method based on segmented statistical approximate representation

The invention discloses a time-series similarity measurement method based on segmented statistical approximate representation. The method comprises the steps of feature extraction and dynamic pattern matching. First, a time series is segmented into sub series, the various statistical features of the sub series are sequentially extracted, and local pattern feature vectors are constructed; then the distance between the local pattern feature vectors is calculated by the weighted Euclidean distance, local pattern matching is achieved, the matched local pattern is used as the sub program of a dynamic programming algorithm, and global pattern matching is achieved. The method is superior to other measurement methods by a large degree on the aspects of measurement precision and calculation efficiency, and plays an important role in daily activities and industrial production of people, for example, financial transactions, traffic control, air quality and temperature monitoring, industrial flow monitoring, medical diagnosis and the like. Large scale sampling data or high-speed dynamic data flow is subjected to similarity-based search, classification, clustering, prediction, abnormal detection, on-line pattern recognition and the like.
Owner:ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products