Object detection method and object detecting device
AssigneeNissan Motor Co., Ltd.
InventorsTakashi Ikegami, Kuniaki Noda
Life of this patent
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Abstract
An object detection method includes irradiating a position in front of a host-vehicle with an electromagnetic wave, and detecting an object in front of the host-vehicle based on a reflected wave of the electromagnetic wave. The object detection method further includes capturing an image of the position in front of the host-vehicle to acquire an image, and determining whether the object is floating matters based on the acquired image if a state where the object is not detected changes to a state where the object is detected.
Claims12
An object detection method comprising:
- irradiating a position in front of a host-vehicle with an electromagnetic wave;
- detecting an object in front of the host-vehicle based on a reflected wave of the electromagnetic wave;
- capturing an image of the position in front of the host-vehicle when the object is not detected to acquire a first image that is an optical image;
- capturing an image of the position in front of the host-vehicle when the object is detected to acquire a second image that is an optical image;
- calculating a difference between the first image and the second image when a state where the object is not detected changes to a state where the object is detected;
- and
- determining that the object is floating matters if the difference is less than a threshold difference.
An object detection method comprising:
- irradiating a position in front of a host-vehicle with an electromagnetic wave;
- detecting an object in front of the host-vehicle based on a reflected wave of the electromagnetic wave;
- capturing an image of the position in front of the host-vehicle to acquire an infrared image;
- calculating an amount of change in a temperature of the object based on a change in luminance of infrared light at a position corresponding to the object in the infrared image when a state where the object is not detected changes to a state where the object is detected;
- and
- determining that the object is floating matters if the amount of change in the temperature of the object is equal to or greater than a threshold amount of change.
An object detecting device comprising:
- a sensor that irradiates a position in front of a host-vehicle with an electromagnetic wave and detects an object in front of the host-vehicle based on a reflected wave of the electromagnetic wave;
- a camera that captures an image of the position in front of the host-vehicle to acquire an optical image;
- and
- a controller configured to:
- acquire a first image that is the optical image captured when the object is not detected;
- acquire a second image that is the optical image captured when the object is detected;
- calculate a difference between the first image and the second image when a state where the object is not detected changes to a state where the object is detected;
- and
- determine that the object is floating matters if the difference is less than a threshold difference.
An object detecting device comprising:
- a sensor that irradiates a position in front of a host-vehicle with an electromagnetic wave and detects an object in front of the host-vehicle based on a reflected wave of the electromagnetic wave;
- a camera that captures an image of the position in front of the host-vehicle to acquire an infrared image;
- and
- a controller configured to:
- calculate an amount of change in a temperature of the object based on a change in luminance of infrared light at a position corresponding to the object in the infrared image when a state where the object is not detected changes to a state where the object is detected;
- and
- determine that the object is floating matters if the amount of change in the temperature of the object is equal to or greater than a threshold amount of change.
Dependencies are inferred from the claim text.