Traffic light violation prediction and recording system
First Claim
1. A traffic light violation prediction system for a traffic signal having a current light phase comprising one of the set consisting of at least red and green, comprising:
- at least one violation prediction image capturing device, said violation prediction image capturing device providing image data representative of at least one vehicle approaching said traffic signal;
a violation prediction unit, responsive to said violation prediction image capturing device and an indication of said current traffic light phase, wherein said violation prediction unit is operative to generate a violation probability score for said at least one vehicle approaching said traffic signal, said violation probability score reflecting a likelihood that said at least one vehicle will violate a red light phase of said traffic signal; and
wherein said violation prediction system is further operable to record at least one image of said at least one vehicle approaching said traffic signal responsive to a determination that said violation probability score is at least as large as a predetermined threshold.
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Accused Products
Abstract
A traffic light violation prediction and recording system, including at least one violation prediction video camera and a violation prediction unit. The violation prediction unit generates violation probability scores for vehicles approaching a traffic intersection based on attributes of those vehicles, such as position, current speed and acceleration. The violation probability scores are passed to a violation recording unit, which allocates violation recording resources, such as a violation video camera, to capture activities of one or more vehicles associated with relatively high violation probabilities. The violation recording unit determines a violation recording resource allocation schedule. If sufficient resources cannot be allocated to record all possible violations within a given time period, the violation recording unit may ignore a potential violation having a relatively low priority. In one embodiment, the violation recording resources include a number of video cameras, as well as one or more violation recorders capable of producing digital data files for storing video recordings of the violation as it occurred.
134 Citations
68 Claims
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1. A traffic light violation prediction system for a traffic signal having a current light phase comprising one of the set consisting of at least red and green, comprising:
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at least one violation prediction image capturing device, said violation prediction image capturing device providing image data representative of at least one vehicle approaching said traffic signal;
a violation prediction unit, responsive to said violation prediction image capturing device and an indication of said current traffic light phase, wherein said violation prediction unit is operative to generate a violation probability score for said at least one vehicle approaching said traffic signal, said violation probability score reflecting a likelihood that said at least one vehicle will violate a red light phase of said traffic signal; and
wherein said violation prediction system is further operable to record at least one image of said at least one vehicle approaching said traffic signal responsive to a determination that said violation probability score is at least as large as a predetermined threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
a violation recording unit, responsive to said violation probability score, for allocating violation recording resources to record a plurality of violation images of at least a selected one of said at least one vehicle approaching said traffic signal, said selected vehicle having a violation probability score at least as high as any other of said at least one vehicle approaching said traffic light.
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6. The system of claim 5, wherein said violation recording resources include at least one violation image capturing device.
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7. The system of claim 1, wherein said violation prediction unit is software executing on a processor.
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8. The system of claim 1, wherein said violation prediction unit is further responsive to a time remaining in yellow light phase input.
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9. The system of claim 1, wherein said violation prediction unit records a violation prediction value regarding said at least one vehicle approaching said traffic signal.
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10. The system of claim 9, wherein said violation prediction value indicates a predicted violation in a first state, and indicates no predicted violation in a second state.
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11. The system of claim 1, wherein said prediction unit is further responsive to a current speed of said at least one vehicle approaching said traffic intersection.
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12. The system of claim 1, wherein said prediction unit is further responsive to a current acceleration of said at least one vehicle approaching said traffic intersection.
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13. The system of claim 1, wherein said prediction unit is further responsive to a current position of said at least one vehicle approaching said traffic intersection.
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14. The system of claim 1, wherein said prediction unit is further operable to compute a time remaining before said at least one vehicle approaching said traffic intersection enters said traffic intersection, responsive to determination of a current acceleration of said vehicle.
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15. The system of claim 14, wherein said prediction unit is further operable to calculate a rate of deceleration required for said at least one vehicle to stop within said time remaining before said vehicle enters said traffic intersection.
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16. The system of claim 15, wherein said prediction unit further determines whether said required deceleration is larger than a specified deceleration value limit, and if so, updates a violation prediction value for the current frame to indicate that a violation is predicted based on the information contained in the current frame.
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17. A method for predicting and recording a traffic light violation of a traffic signal having a current light phase comprising one of the set consisting of at least red and green, comprising:
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providing image data representative of at least one vehicle approaching said traffic signal; and
generating, responsive to said image data and an indication of said current traffic light phase, a violation probability score for said at least one vehicle approaching said traffic signal, said violation probability score reflecting a likelihood that said at least one vehicle will violate a red light phase of said traffic signal; and
recording at least one image of said at least one vehicle approaching said traffic signal responsive to a determination that said violation probability score is at least as large as a predetermined threshold. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
determining, by said violation prediction unit, whether said required deceleration is larger than a specified deceleration value limit; and
updating, in the event that said deceleration is larger than said specified deceleration value limit, a violation prediction value for the current frame to indicate that a violation is predicted.
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33. A traffic light violation prediction system for a traffic signal having a current light phase comprising one of the set consisting of at least red and green, comprising:
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at least one violation capturing resource; and
a violation prediction unit, responsive to said violation prediction image capturing device and an indication of said current traffic light phase, wherein said violation prediction unit is operative to generate a violation probability score for said at least one vehicle approaching said traffic signal, said violation probability score reflecting a likelihood that said at least one vehicle will violate a red light phase of said traffic signal; and
wherein said violation prediction system is further operable to allocate said at least one violation capturing resource to capture image data showing said at least one vehicle in the event that said violation probability score satisfies a predetermined criteria. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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50. A method for predicting and recording a traffic light violation of a traffic signal having a current light phase comprising one of the set consisting of at least red and green, comprising:
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providing a first set of image data representative of at least one vehicle approaching said traffic signal;
generating, responsive to said first set of image data and an indication of said current traffic light phase, a violation probability score for said at least one vehicle approaching said traffic signal, said violation probability score reflecting a likelihood that said at least one vehicle will violate a red light phase of said traffic signal; and
allocating at least one violation capturing resource to capture a second set of image data showing said at least one vehicle in the event that said violation probability score satisfies a predetermined criteria. - View Dependent Claims (51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68)
determining, by said violation prediction unit, whether said required deceleration is larger than a specified deceleration value limit; and
updating a violation prediction value for the current frame to indicate that a violation is predicted in the event that said deceleration is larger than said specified deceleration value limit.
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Specification