Estimating conditions from observations of one instrument based on training from observations of another instrument
First Claim
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1. A method, comprising:
- accessing a first data set generated by a first instrument and a second data set generated by a second instrument different than the first instrument, wherein;
the first data set includes first observations by the first instrument of a subject under observation;
the second data set includes second observations by the second instrument of the subject;
the first observations are of a different type than the second observations and include conditions of the subject at points in time at which the first observations are made; and
each condition of the subject at a corresponding point in time at which the corresponding first observation is made is selected from a set of possible conditions;
automatically labeling the second data set based on the first data set;
training a computer learning model with the labeled second data set to recognize complex relationships between the second observations and conditions in the set of possible conditions;
analyzing, with the trained computer learning model, a third data set that includes a third observation by the second instrument of the subject; and
based on the analyzing, estimating a condition of the subject in the third observation, the estimated condition selected from the set of possible conditions.
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Abstract
Systems and methods are disclosed to label data collected by one instrument based on data collected by another instrument, train a computer learning model with the labeled data, and then use the trained computer learning model to estimate a condition from new unlabeled data. For example, weather-related pavement conditions may be estimated from camera images according to such systems and methods. Systems and methods are also disclosed to estimate road weather safety or hazard conditions using two different types of pavement conditions, such as road state and friction or grip coefficient, estimated from unlabeled camera images.
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Citations
24 Claims
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1. A method, comprising:
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accessing a first data set generated by a first instrument and a second data set generated by a second instrument different than the first instrument, wherein; the first data set includes first observations by the first instrument of a subject under observation; the second data set includes second observations by the second instrument of the subject; the first observations are of a different type than the second observations and include conditions of the subject at points in time at which the first observations are made; and each condition of the subject at a corresponding point in time at which the corresponding first observation is made is selected from a set of possible conditions; automatically labeling the second data set based on the first data set; training a computer learning model with the labeled second data set to recognize complex relationships between the second observations and conditions in the set of possible conditions; analyzing, with the trained computer learning model, a third data set that includes a third observation by the second instrument of the subject; and based on the analyzing, estimating a condition of the subject in the third observation, the estimated condition selected from the set of possible conditions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system, comprising:
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a first data set generated by a first instrument, the first data set including first observations by the first instrument of a subject under observation, the first observations including conditions of the subject at points in time at which the first observations are made, wherein each condition of the subject at the corresponding point in time at which the corresponding first observation is made is selected from a set of possible conditions; a second data set generated by a second instrument different than the first instrument, the second data set including second observations by the second instrument of the subject, the first observations being of a different type than the second observations, the second data set labeled based on the first data set; and a computer learning model that has access to the first data set and the second data set, wherein; the computer learning model is trainable with the first data set and the second data set to recognize complex relationships between the second data set and conditions in the set of possible conditions; and the trained computer learning model is configured to; analyze a third data set that includes a third observation by the second instrument of the subject; and based on the analysis, estimate a condition of the subject. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification