SYSTEM AND METHOD OF DETECTING ABNORMAL MOVEMENT OF A PHYSICAL OBJECT
First Claim
1. A method of identifying a predetermined type of abnormal movement of a physical object, a periodic signal being representative of movement of the physical object, the method comprising:
- generating a raw matrix comprising a first array and a second array, the generation of the raw matrix comprising;
performing a first analysis on a predetermined portion of the periodic signal to generate the first array; and
performing a second analysis different from the first analysis on the predetermined portion of the periodic signal to generate the second array;
generating an integrated matrix by performing a dimension reduction on the raw matrix; and
identifying the predetermined type of abnormal movement of the physical object by comparing the integrated matrix or a set of indexes derived from the integrated matrix with a predetermined benchmark pattern corresponding to the predetermined type of abnormal movement.
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Abstract
A method of identifying a predetermined type of abnormal movement of a physical object includes generating a raw matrix comprising a first array and a second array, the generation of the raw matrix. The method also includes generating an integrated matrix by performing a dimension reduction on the raw matrix. The method a further includes identifying the predetermined type of abnormal movement of the physical object by comparing the integrated matrix or a set of indexes derived from the integrated matrix with a predetermined benchmark pattern corresponding to the predetermined type of abnormal movement. Generating the raw matrix includes a first analysis on a predetermined portion of a periodic signal representative of movement of the physical object to generate the first array. Generating the raw matrix also includes performing a second analysis different from the first analysis on the predetermined portion of the periodic signal to generate the second array.
9 Citations
20 Claims
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1. A method of identifying a predetermined type of abnormal movement of a physical object, a periodic signal being representative of movement of the physical object, the method comprising:
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generating a raw matrix comprising a first array and a second array, the generation of the raw matrix comprising; performing a first analysis on a predetermined portion of the periodic signal to generate the first array; and performing a second analysis different from the first analysis on the predetermined portion of the periodic signal to generate the second array; generating an integrated matrix by performing a dimension reduction on the raw matrix; and identifying the predetermined type of abnormal movement of the physical object by comparing the integrated matrix or a set of indexes derived from the integrated matrix with a predetermined benchmark pattern corresponding to the predetermined type of abnormal movement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system comprising:
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a computer readable storage medium encoded with a computer program code; a processor coupled to the computer readable storage medium, the processor being configured to execute the computer program code; wherein the computer program code is configured to cause the processor to; perform a first analysis on a predetermined portion of a periodic signal to generate a first array, the periodic signal being representative of movement of a physical object, and the predetermined portion corresponding to a predetermined time period of the periodic signal; perform a second analysis different from the first analysis on the predetermined portion of the periodic signal to generate the second array; generate an integrated matrix by performing a dimension reduction on the raw matrix; and determine a likelihood of a predetermined type of abnormal movement of the physical object by comparing the integrated matrix or a set of indexes derived from the integrated matrix with a predetermined benchmark pattern corresponding to the predetermined type of abnormal movement. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method, comprising:
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generating a first array of a raw matrix based on a predetermined portion of a periodic signal representative of a movement of a physical object, wherein generating the first array comprises; segmenting the predetermined portion of the periodic signal into a plurality of signal segments, each signal segment including a nominal waveform, and the plurality of signal segments including one or more pairs of adjacent signal segments; obtaining two signal arrays having a same size by re-sampling one or both of the adjacent signal segments for each pair of the one or more pairs of adjacent signal segments; calculating joint probability and marginal probability of the two signal arrays of the re-sampled adjacent signal segments; and calculating a mutual information index based on the calculated joint probability and the calculated marginal probability of the one or more pairs of re-sampled adjacent signal segments; generating a second array of the raw matrix based on the predetermined portion of the periodic signal; and recognizing the movement of the physical object corresponds to one or more predefined types of abnormal movement based on a comparison of data derived from the raw matrix with a benchmark pattern corresponding to the one or more predefined types of abnormal movement. - View Dependent Claims (18, 19, 20)
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Specification