Vehicle front-view monitoring system
First Claim
Patent Images
1. A vehicle monitoring system for taking a fail-safe measure for a fault monitoring condition on a monitored image, comprising:
- a camera device provided on a vehicle for taking the monitored image; and
a controller for judging an optical irregularity occurred on the monitored image by taking the fail-safe measure when a fail-safe measure requirement using a first parameter is met on the monitored image for a predetermined first period, and for interrupting the fail-safe measure when a fail-safe measure-release requirement using a second parameter is met within a predetermined second period after the fail-safe measure-interruption requirement has been met,wherein the second parameter is different from the first parameter, andthe first parameter includes at least a value obtained by normalizing an addition of a luminance-characteristic value on the monitored image by a shutter speed of the camera device and a specific number of data related to luminance edges on the monitored image and the second parameter includes at least the shutter speed and the addition of a luminance-characteristic value.
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Abstract
A vehicle front-view monitoring system takes fail-safe measures when a fail-safe measure-interruption requirement using first parameter are met on a monitored image for a predetermined first period. The functions interrupted by the fail-safe measure is resumed when a fail-safe measure-release requirement using second parameter which is different from the first parameter is met within a predetermined second period after the fail-safe measure-interruption requirement has been met. The first period is variable in accordance with how accurately lane marking on a road in the monitored image is recognized.
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Citations
9 Claims
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1. A vehicle monitoring system for taking a fail-safe measure for a fault monitoring condition on a monitored image, comprising:
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a camera device provided on a vehicle for taking the monitored image; and a controller for judging an optical irregularity occurred on the monitored image by taking the fail-safe measure when a fail-safe measure requirement using a first parameter is met on the monitored image for a predetermined first period, and for interrupting the fail-safe measure when a fail-safe measure-release requirement using a second parameter is met within a predetermined second period after the fail-safe measure-interruption requirement has been met, wherein the second parameter is different from the first parameter, and the first parameter includes at least a value obtained by normalizing an addition of a luminance-characteristic value on the monitored image by a shutter speed of the camera device and a specific number of data related to luminance edges on the monitored image and the second parameter includes at least the shutter speed and the addition of a luminance-characteristic value.
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2. A vehicle monitoring system, comprising:
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a camera device provided on a vehicle for taking an image to be monitored as the monitored image; a processor for analyzing the image and providing a warning to a driver and/or automatically controlling one or more vehicle systems in response to the analyzing; and a controller for judging an optical irregularity is interfering with an acceptable quality of image capture based on the occurrence of a first parameter and inhibiting the warning and/or vehicle system automatic control in response thereto, and judging when the optical irregularity interfering with an acceptable quality of image capture is no longer present based on a second parameter different from the first parameter, after such inhibiting and restoring the ability of the processor to warn and/or automatically control one or more vehicle systems in response to the analyzing, wherein the first parameter includes a function of a camera shutter speed normalized luminance-characteristic of the monitored image and a data related to luminance edges on the monitored image and the second parameter includes a function of shutter speed and a luminance-characteristic. - View Dependent Claims (3, 4)
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5. A vehicle monitoring system comprising:
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a camera device provided on a vehicle for taking an image to be monitored; and a controller for taking fail-safe measures when a fail-safe measure-interruption requirement using a first parameter is met on a monitored image for a predetermined first period and resuming a function interrupted by the fail-safe measures when a fail-safe measure-release requirement using a second parameter different from the first parameter is met within a predetermined second period after the fail-safe measure-interruption requirement has been met, wherein the first parameter includes at least a value obtained by normalizing an addition of a luminance-characteristic value on the monitored image by a shutter speed of the camera device and a specific number of luminance edges on the monitored image and the second parameter includes at least the shutter speed and the addition of a luminance-characteristic value. - View Dependent Claims (6)
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7. A vehicle monitoring system comprising:
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a camera device provided on a vehicle for taking an image to be monitored; and a controller for taking fail-safe measures when a fail-safe measure-interruption requirement using a first parameter is met on a monitored image for a predetermined first period and resuming a function interrupted by the fail-safe measures when a fail-safe measure-release requirement using a second parameter different from the first parameter is met within a predetermined second period after the fail-safe measure-interruption requirement has been met, wherein the first and the second parameters include parameters related to luminance-distribution characteristics on the monitored image but different from each other and a parameter related to the luminance-distribution characteristics and involved in the first parameter is a value obtained by normalizing a luminance-addition variance or the maximum addition of a luminance on the monitored image by a shutter speed of the camera device whereas a parameter related to the luminance-distribution characteristics and involved in the second parameter is the luminance-addition variance. - View Dependent Claims (8)
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9. A vehicle monitoring system, comprising:
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a camera device provided on a vehicle for taking an image to be monitored; a processor for analyzing the image and providing a warning to a driver and/or automatically controlling one or more vehicle systems in response to the analyzing; and a controller for judging whether an optical irregularity is interfering with an acceptable quality of image capture based on the occurrence of a first parameter and inhibiting the warning and/or vehicle system automatic control in response thereto, and judging when the optical irregularity interfering with an acceptable quality of image capture is no longer present based on a second parameter after such inhibiting and restoring the ability of the processor to warn and/or automatically control one or more vehicle systems in response to the analyzing, wherein the first period is variable in accordance with how accurately a lane making on a road in the monitored image is recognized; and
the first parameter includes a function of a camera shutter speed normalized luminance-characteristic of the monitored image and a data related to luminance edges on the monitored image and the second parameter includes a function of shutter speed and a luminance-characteristic value.
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Specification