Image processor and monitoring system
First Claim
1. An image processor for receiving camera images taken with a plurality of cameras capturing the surroundings of a vehicle and generating a synthesized image from the camera images, the image processor comprising:
- a parameter generation section constructed to be able to generate a plurality of image synthesis parameter groups each representing the correspondence between the camera images and the synthesized image and having different spatial or temporal resolution relations, wherein the synthesized image is generated from the camera images according to the image synthesis parameter group generated by the parameter generation section, and the parameter generation section switches the image synthesis parameter group to be generated according to an output of a vehicle motion detection section for detecting the motion of the vehicle.
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Abstract
The image processor of the present invention generates a more natural synthesized image from camera images taken with a plurality of cameras capturing the surroundings of a vehicle. A parameter storage section stores a plurality of image synthesis parameter groups representing the correspondence between the camera images and the synthesized image and having different spatial or temporal resolution relations. A parameter selection section selects the image synthesis parameter group according to the output of a vehicle motion detection section for detecting the motion of the vehicle such as the driving speed and direction. An image synthesis section generates the synthesized image from the camera images according to the selected image synthesis parameter group.
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Citations
23 Claims
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1. An image processor for receiving camera images taken with a plurality of cameras capturing the surroundings of a vehicle and generating a synthesized image from the camera images, the image processor comprising:
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a parameter generation section constructed to be able to generate a plurality of image synthesis parameter groups each representing the correspondence between the camera images and the synthesized image and having different spatial or temporal resolution relations, wherein the synthesized image is generated from the camera images according to the image synthesis parameter group generated by the parameter generation section, and the parameter generation section switches the image synthesis parameter group to be generated according to an output of a vehicle motion detection section for detecting the motion of the vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A monitoring system comprising:
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a plurality of cameras for capturing the surroundings of a vehicle;
an image processing section for receiving camera images from the plurality of cameras and generating a synthesized image from the camera images; and
a display section for displaying the synthesized image generated by the image processing section, wherein the image processing section comprises a parameter generation section constructed to be able to generate a plurality of image synthesis parameter groups each representing the correspondence between the camera images and the synthesized image and having different spatial or temporal resolution relations, the synthesized image is generated from the camera images according to the image synthesis parameter group generated by the parameter generation section, and the parameter generation section generates at least one of the plurality of image synthesis parameter groups according to an output of a vehicle motion detection section for detecting the motion of the vehicle.
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10. An image processor for receiving camera images taken with a plurality of cameras capturing the surroundings of a vehicle and generating a synthesized image from the camera images, the image processor comprising:
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a parameter storage section for storing a plurality of sets of an image synthesis parameter group representing the correspondence between the camera images and the synthesized image and a filter parameter group corresponding to the image synthesis parameter group;
a parameter selection section for selecting at least one among the plurality of sets of the image synthesis parameter group and the filter parameter group stored by the parameter storage section according to an output of a vehicle motion detection section for detecting the motion of the vehicle and an output of a vehicle status detection section for detecting the status of the vehicle such as an operation by a driver of the vehicle or whether or not an obstacle exists in the surroundings of the vehicle; and
a filtering section for performing frequency band limitation filtering for the camera images according to the filter parameter group of the set selected by the parameter selection section, wherein the synthesized image is generated from the camera images filtered by the filtering section according to the image synthesis parameter group of the set selected by the parameter selection section. - View Dependent Claims (11)
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12. A monitoring system comprising:
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a plurality of cameras for capturing the surroundings of a vehicle;
an image processing section for receiving camera images from the plurality of cameras and generating a synthesized image from the camera images; and
a display section for displaying the synthesized image generated by the image processing section, wherein the image processing section comprises;
a parameter storage section for storing a plurality of sets of an image synthesis parameter group representing the correspondence between the camera images and the synthesized image and a filter parameter group corresponding to the image synthesis parameter group;
a parameter selection section for selecting at least one among the plurality of sets of the image synthesis parameter group and the filter parameter group stored by the parameter storage section according to an output of a vehicle motion detection section for detecting the motion of the vehicle and an output of a vehicle status detection section for detecting the status of the vehicle such as an operation by a driver of the vehicle or whether or not an obstacle exists in the surroundings of the vehicle; and
a filtering section for performing frequency band limitation filtering for the camera images according to the filter parameter group of the set selected by the parameter selection section, wherein the synthesized image is generated from the camera images filtered by the filtering section according to the image synthesis parameter group of the set selected by the parameter selection section.
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13. An image processor for receiving camera images taken with a plurality of cameras capturing the surroundings of a vehicle and generating a synthesized image from the camera images, the image processor comprising:
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a brightness correction parameter calculation section for calculating brightness correction parameters for correcting the brightness and tint of the camera images; and
a brightness correction section for correcting the brightness and tint of the camera images using the brightness correction parameters calculated by the brightness correction parameter calculation section, wherein the synthesized image is generated from the plurality of camera images subjected to brightness correction by the brightness correction section according to an image synthesis parameter group representing the correspondence between the camera images and the synthesized image, the image synthesis parameter group includes overlap area data for an overlap area on the synthesized image in which coverages of the plurality of cameras overlap, the overlap area data indicating coordinates of pixels in camera images corresponding to the overlap area, and the brightness correction parameter calculation section receives the overlap area data and calculates the brightness correction parameters using brightness and tint data for the pixels in the camera images corresponding to the overlap area indicated by the overlap area data. - View Dependent Claims (14, 15, 16)
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17. A monitoring system comprising:
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a plurality of cameras for capturing the surroundings of a vehicle;
an image processing section for receiving camera images from the plurality of cameras and generating a synthesized image from the camera images; and
a display section for displaying the synthesized image generated by the image processing section, wherein the image processing section comprises;
a brightness correction parameter calculation section for calculating brightness correction parameters for correcting the brightness and tint of the camera images; and
a brightness correction section for correcting the brightness and tint of the camera images using the brightness correction parameters calculated by the brightness correction parameter calculation section, wherein the synthesized image is generated from the plurality of camera images subjected to brightness correction by the brightness correction section according to an image synthesis parameter group representing the correspondence between the camera images and the synthesized image, the image synthesis parameter group includes overlap area data for an overlap area on the synthesized image in which coverages of the plurality of cameras overlap, the overlap area data indicating coordinates of pixels in camera images corresponding to the overlap area, and the brightness correction parameter calculation section receives the overlap area data and calculates the brightness correction parameters using brightness and tint data for the pixels in the camera images corresponding to the overlap area indicated by the overlap area data.
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18. An image processor for receiving camera images taken with a plurality of cameras capturing the surroundings of a vehicle and generating a synthesized image from the camera images,
wherein, in an overlap area in which coverages of a plurality of cameras overlap on the synthesized image, a camera image used for generation of the synthesized image is selected among camera images from the plurality of cameras according to an output of a vehicle motion detection section for detecting the motion of the vehicle or an output of a vehicle status detection section for detecting the status of the vehicle such as an operation by a driver of the vehicle or whether or not an obstacle exists in the surroundings of the vehicle.
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19. An image processor for receiving camera images taken with a plurality of cameras capturing the surroundings of a vehicle and generating a synthesized image from the camera images,
wherein, in an overlap area in which coverages of a plurality of cameras overlap on the synthesized image, weights to camera images from the plurality of cameras are set according to an output of a vehicle motion detection section for detecting the motion of the vehicle or an output of a vehicle status detection section for detecting the status of the vehicle such as an operation by a driver of the vehicle or whether or not an obstacle exists in the surroundings of the vehicle.
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21. A monitoring system comprising:
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a plurality of cameras for capturing the surroundings of a vehicle;
an image processing section for receiving camera images from the plurality of cameras and generating a synthesized image from the camera images; and
a display section for displaying the synthesized image generated by the image processing section, wherein, in an overlap area in which coverages of a plurality of cameras overlap on the synthesized image, a camera image used for generation of the synthesized image is selected among camera images from the plurality of cameras according to an output of a vehicle motion detection section for detecting the motion of the vehicle or an output of a vehicle status detection section for detecting the status of the vehicle such as an operation by a driver of the vehicle or whether or not an obstacle exists in the surroundings of the vehicle.
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22. A monitoring system comprising:
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a plurality of cameras for capturing the surroundings of a vehicle;
an image processing section for receiving camera images from the plurality of cameras and generating a synthesized image from the camera images; and
a display section for displaying the synthesized image generated by the image processing section, wherein, in an overlap area in which coverages of a plurality of cameras overlap on the synthesized image, weights to camera images from the plurality of cameras are set according to an output of a vehicle motion detection section for detecting the motion of the vehicle or an output of a vehicle status detection section for detecting the status of the vehicle such as an operation by a driver of the vehicle or whether or not an obstacle exists in the surroundings of the vehicle.
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23. An image processor for receiving camera images taken with a plurality of cameras capturing the surroundings of a vehicle and generating a synthesized image from the camera images,
wherein, the image processor includes an image synthesis parameter group associating pixels in the synthesized image with pixels in the camera images, and in an overlap area in which coverages of the plurality of cameras overlap on the synthesized image, the image synthesis parameter group includes weights set to camera images from the plurality of cameras represented by a dithering method.
Specification