Lidar measurement device for vehicular traffic surveillance and method for use of same
First Claim
1. A police speed detection Lidar measurement device for vehicular traffic surveillance in environments having multiple target vehicles, the device comprising:
- a video circuitry portion for acquiring video of a field of view having a target vehicle therein, the video including an image of the target vehicle;
a steerable laser for progressively transmitting laser range-finding signals to the field of view in a horizontal and vertical step-wise manner and receiving reflected laser range-finding signals from the target vehicle at the device;
a processing circuit portion for determining target data of the target vehicle based upon range and time measurements associated with the reflected laser range-finding signals, the processing circuit portion integrating the target data into the video such that the target data is associated with the image of the target vehicle; and
a display in communication with the processing circuit portion, the display for displaying the video including the image of the target vehicle having the target data associated therewith.
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Accused Products
Abstract
A Lidar measurement device for vehicular traffic surveillance and method for use of same are disclosed. In one embodiment, video circuitry acquires video of a field of view having a target therein. A steerable laser progressively transmits laser range-finding signals to the field of view in a horizontal and vertical step-wise manner and receives reflected laser range-finding signals from the target. A processing circuit portion determines target data of the target based upon range and time measurements associated with the reflected laser range-finding signals. The processing circuit then integrates the target data into the video such that the video may displayed with an image of the target and speed measurement associated therewith.
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Citations
22 Claims
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1. A police speed detection Lidar measurement device for vehicular traffic surveillance in environments having multiple target vehicles, the device comprising:
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a video circuitry portion for acquiring video of a field of view having a target vehicle therein, the video including an image of the target vehicle; a steerable laser for progressively transmitting laser range-finding signals to the field of view in a horizontal and vertical step-wise manner and receiving reflected laser range-finding signals from the target vehicle at the device; a processing circuit portion for determining target data of the target vehicle based upon range and time measurements associated with the reflected laser range-finding signals, the processing circuit portion integrating the target data into the video such that the target data is associated with the image of the target vehicle; and a display in communication with the processing circuit portion, the display for displaying the video including the image of the target vehicle having the target data associated therewith. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 22)
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9. A police speed detection Lidar measurement device for vehicular traffic surveillance in environments having multiple target vehicles, the device comprising:
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a video circuitry portion for acquiring video of a field of view having a target vehicle therein, the video including an image of the target vehicle; a steerable laser for performing first and second scans on the field of view, data collected from the first and second scans being stored in first and second target data buffers, wherein reflected laser range-finding signals from the target vehicle are received at the device; a processing circuit portion for identifying target data by performing a best fit analysis comparison on the first and second target data buffers to identify reflected laser range-finding signals belonging to the target vehicle in each of the first and second target data buffers, the target data being data selected from the group consisting of speed measurement of the target vehicle, range measurement of the target vehicle, and heading of the target vehicle; the target data being determined based upon the range and time measurements associated with the reflected laser range-finding signals of the first and second target data buffers; the processing circuit portion integrating the target data into the video such that the target data is associated with the image of the target vehicle; the steerable laser and video circuitry portion comprise identical aspect ratios; and a display in communication with the processing circuit portion, the display for displaying the video including the image of the target vehicle having the target data associated therewith. - View Dependent Claims (10, 11, 12)
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13. A method for operating a police speed detection vehicular traffic surveillance Lidar measurement device in environments having multiple target vehicles, the method comprising:
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acquiring video with the device of a first field of view having a first aspect ratio, the first field of view operably having a target vehicle therein, the video including an image of the target vehicle; progressively repeatedly scanning a second field of view having a second aspect ratio with laser range-finding signals from the device, the second field of view operably having the target vehicle therein and being substantially similar to the first field of view, the second aspect ratio being substantially similar to the first aspect ratio; during the progressive repeated scanning of the second field of view, receiving reflected laser range-finding signals from the target vehicle at the device; determining target data of the target vehicle based upon range and time measurements associated with the reflected laser range-finding signals; and integrating the target data into the video such that speed measurement is associated with the image of the target vehicle. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A system for operating a police speed detection vehicular traffic surveillance Lidar measurement device, the system comprising:
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means for acquiring video with the device of a first field of view having a first aspect ratio, the first field of view operably having a target vehicle therein, the video including an image of the target vehicle; means for progressively repeatedly scanning a second field of view having a second aspect ratio with laser range-finding signals from the device, the second field of view operably having the target vehicle therein and being substantially similar to the first field of view, the second aspect ratio being substantially similar to the first aspect ratio; operable during the progressive repeated scanning of the second field of view, means for receiving reflected laser range-finding signals from the target vehicle at the device; means for determining target data of the target vehicle based upon range and time measurements associated with the reflected laser range-finding signals; and means for integrating the target data into the video such that speed measurement is associated with the image of the target vehicle. - View Dependent Claims (20, 21)
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Specification