METHOD AND APPARATUS FOR DETERMINING AND ANALYZING A LOCATION OF VISUAL INTEREST
First Claim
1. A method on analyzing a location of driver visual interest derived from observation of driver physiological orientation in a vehicle, the method comprising:
- obtaining data descriptive of a plurality of driver gaze direction instances, wherein each driver gaze direction instance is defined by a data set;
processing the data using a computer-based processor;
classifying a plurality of the driver gaze direction instances as either 00location or off-location in preparation for further analysis related to the location of driver visual interest;
clustering data derived from the classified driver gaze direction instances;
characterized in thattransforming each of the plurality of classified driver gaze direction instances into one of two binary values representative of whether the respective driver gaze direction instance is on-location or off-location thus forming a classification signal which determines in each sample or unit of time whether the location of driver visual interest is on-location or off-location;
computing a glance frequency by counting the number of on-and off intervals in the classification signal; and
computing a glance duration by regarding a start and end of each continuous segment classified in the same way.
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Abstract
A method of analyzing data based on the physiological orientation of a driver is provided. Data is descriptive of a driver'"'"'s gaze-direction is processing and criteria defining a location of driver interest is determined. Based on the determined criteria, gaze-direction instances are classified as either on-location or off-location. The classified instances can then be used for further analysis, generally relating to times of elevated driver workload and not driver drowsiness. The classified instances are transformed into one of two binary values (e.g., 1 and 0) representative of whether the respective classified instance is on or off location. The uses of a binary value makes processing and analysis of the data faster and more efficient. Furthermore, classification of at least some of the off-location gaze direction instances can be inferred from the failure to meet the determined criteria for being classified as an on-location driver gaze direction instance.
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Citations
28 Claims
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1. A method on analyzing a location of driver visual interest derived from observation of driver physiological orientation in a vehicle, the method comprising:
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obtaining data descriptive of a plurality of driver gaze direction instances, wherein each driver gaze direction instance is defined by a data set; processing the data using a computer-based processor;
classifying a plurality of the driver gaze direction instances as either 00location or off-location in preparation for further analysis related to the location of driver visual interest;clustering data derived from the classified driver gaze direction instances;
characterized in thattransforming each of the plurality of classified driver gaze direction instances into one of two binary values representative of whether the respective driver gaze direction instance is on-location or off-location thus forming a classification signal which determines in each sample or unit of time whether the location of driver visual interest is on-location or off-location; computing a glance frequency by counting the number of on-and off intervals in the classification signal; and computing a glance duration by regarding a start and end of each continuous segment classified in the same way. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification