Image processing device for vehicle
First Claim
Patent Images
1. An image processing device for a vehicle, comprising:
- means for detecting an object by transmitting a radio wave outside of the vehicle and detecting the object in a first area outside of the vehicle by using a reflected wave of the transmitted radio wave, the object detecting means detecting a distance from the vehicle to the detected object in the first area outside of the vehicle by using the reflected wave of the transmitted radio wave;
means for acquiring an image in a second area including the first area;
means for processing the acquired image to detect, in the acquired image, the object detected by the object detecting means, the image processing means executing frequency analysis of brightness distribution in the acquired image;
means for detecting visibility outside of the vehicle based on the result of the detection of the object detecting means and the result of the detection of the processing means; and
means for estimating a visibility distance outside of the vehicle based on the detected distance and the result of the frequency analysis.
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Abstract
An image processing device for a vehicle includes a radar for transmitting a radio wave outside of the vehicle and detecting an object in a first area outside of the vehicle by using a reflected wave of the transmitted radio wave; a camera for acquiring an image in a second area including the first area; and an image processing unit for processing the acquired image to detect, in the acquired image, the object detected by the radar. Visibility outside of the vehicle is detected based on result of detection of the radar and result of detection of the camera.
19 Citations
10 Claims
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1. An image processing device for a vehicle, comprising:
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means for detecting an object by transmitting a radio wave outside of the vehicle and detecting the object in a first area outside of the vehicle by using a reflected wave of the transmitted radio wave, the object detecting means detecting a distance from the vehicle to the detected object in the first area outside of the vehicle by using the reflected wave of the transmitted radio wave; means for acquiring an image in a second area including the first area; means for processing the acquired image to detect, in the acquired image, the object detected by the object detecting means, the image processing means executing frequency analysis of brightness distribution in the acquired image; means for detecting visibility outside of the vehicle based on the result of the detection of the object detecting means and the result of the detection of the processing means; and means for estimating a visibility distance outside of the vehicle based on the detected distance and the result of the frequency analysis. - View Dependent Claims (2, 3, 4, 7)
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5. An image processing device for a vehicle, comprising:
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means for detecting an object by transmitting a radio wave outside of the vehicle and detecting a distance from the vehicle to the object in a first area outside of the vehicle by using a reflected wave of the transmitted radio wave; means for acquiring an image of a second area including the first area; means for executing frequency analysis of brightness distribution in the acquired image the executing means calculating frequency characteristics of the brightness distribution in the acquired image; means for estimating a visibility distance outside of the vehicle based on the detected distance and result of the frequency analysis; and means for storing mapping data used for transforming the calculated frequency characteristics to the visibility distance with a parameter of the detected distance;
whereinthe estimating means estimates the visibility distance from the calculated frequency characteristics by using the stored mapping data. - View Dependent Claims (6, 8)
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9. A method for image processing for an image processing device in a vehicle, the method comprising:
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detecting an object in a first area outside of the vehicle by transmitting a radio wave and using a reflected wave of the transmitted radio wave; detecting a distance from the vehicle to the detected object in the first area outside of the vehicle by using the reflected wave of the transmitted radio wave; acquiring an image in a second area including the first area; executing frequency analysis of brightness distribution in the acquired image; determining the detected object in the acquired image by processing the acquired image; detecting visibility outside of the vehicle based on the result of detecting the object and the result of determining the detected object in the acquired image; and estimating a visibility distance outside of the vehicle based on the detected distance and the result of the frequency analysis.
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10. An image processing device for a vehicle, comprising:
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an object detecting unit that transmits a radio wave outside of the vehicle and detects an object in a first area outside of the vehicle by using a reflected wave of the transmitted radio wave, the object detecting unit detecting a distance from the vehicle to the detected object in the first area outside the vehicle by using the reflected wave of the transmitted radio wave; an image acquisition unit that acquires an image in a second area including the first area; an image processing unit that processes the acquired image to detect, in the acquired image, the object detected by the object detecting unit, the image processing unit executing frequency analysis of brightness distribution in the acquired images; a visibility detecting unit that detects visibility outside of the vehicle based on result of detection of the object detecting unit and result of detection of the image processing unit; and a visibility estimating unit that estimates a visibility distance outside the vehicle based on the detected distance and the result of the frequency analysis.
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Specification