Drive assisting system
First Claim
1. A driving assistance system comprising:
- imaging means for picking up a surrounding image of a vehicle on a road surface;
image translating means for executing an image translation by using a three-dimensional projection model, in which an object outside of said vehicle on a side and above of the road surface is picked up by said imaging means and an image of said object is projected as a convex curve and a height from the road surface of said image of said object does not appear to vary from an image of a different object of a similar height when the different object is within a predetermined range from a top end portion of the vehicle in a traveling direction, to translate the image picked up by the imaging means into an image viewed from a virtual viewpoint; and
displaying means for displaying the image translated by the image translating means, whereinthe three-dimensional projection model has a cylindrical surface on which a shape on the side of the road surface is projected as a convex curve, and a spherical surface which is smoothly connected to an end portion of the cylindrical surface, whereinsaid cylindrical surface has an axis that is parallel with the road surface for some substantial length.
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Abstract
An object of the present invention is to provide a driving assistance system capable of displaying a picked-up image near a vehicle as a less-distorted image on a monitor.
A driving assistance system according to the present invention comprises an imaging means (2) for picking up a surrounding image of a vehicle (1) on a road surface, an image translating means (3) for executing an image translation by using a three-dimensional projection model (300), which is convex toward a road surface side and whose height from the road surface is not changed within a predetermined range from a top end portion of the vehicle (1) in a traveling direction, to translate the image picked up by the imaging means (2) into an image viewed from a virtual camera (2a), and a displaying means (4) for displaying an image translated by the image translating means (3). The three-dimensional projection model (300) is configured by a cylindrical surface model (301) that is convex toward the road surface side, and a spherical surface model (302) connected to an end portion of the cylindrical surface model (301). Accordingly, the straight line on the road surface, which is in parallel with the center axis of the cylindrical surface model (301), is displayed as the straight line, and thus a clear and less-distorted screen can be provided to the driver.
30 Citations
17 Claims
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1. A driving assistance system comprising:
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imaging means for picking up a surrounding image of a vehicle on a road surface; image translating means for executing an image translation by using a three-dimensional projection model, in which an object outside of said vehicle on a side and above of the road surface is picked up by said imaging means and an image of said object is projected as a convex curve and a height from the road surface of said image of said object does not appear to vary from an image of a different object of a similar height when the different object is within a predetermined range from a top end portion of the vehicle in a traveling direction, to translate the image picked up by the imaging means into an image viewed from a virtual viewpoint; and displaying means for displaying the image translated by the image translating means, wherein the three-dimensional projection model has a cylindrical surface on which a shape on the side of the road surface is projected as a convex curve, and a spherical surface which is smoothly connected to an end portion of the cylindrical surface, wherein said cylindrical surface has an axis that is parallel with the road surface for some substantial length. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A driving assistance system comprising:
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imaging means for picking up a surrounding image of a vehicle on a road surface; image translating means for executing an image translation by using a three-dimensional projection model, in which an object outside of said vehicle is picked up by said imaging means and an image of said object is projected as a convex curve comprised of at least part of a ellipsoid surface model smoothly connected to at least part of a cylindrical surface model having a cylindrical axis that is parallel with the road surface for some substantial length; and displaying means for displaying the image translated by the image translating means. - View Dependent Claims (12, 13, 14)
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15. A driving assistance system comprising:
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imaging means for picking up a surrounding image of a vehicle on a road surface; image translating means for executing an image translation by using a three-dimensional projection model, in which an object outside of said vehicle on a side of the road surface is picked up by said imaging means and an image of said object is projected as a convex curve comprised of at least part of a quadric surface model smoothly connected to at least part of a cylindrical surface model having a cylindrical axis that is parallel with the road surface for at least three meters, such that a height from the road surface of said image of said object does not appear to vary from an image of a different object of a similar height when the different object is within a predetermined range from a top end portion of the vehicle in a traveling direction, to translate the image picked up by the imaging means into an image viewed from a virtual viewpoint; and displaying means for displaying the image translated by the image translating means. - View Dependent Claims (16, 17)
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Specification