Method for evaluation, by motor vehicle, of the characteristics of a front element
First Claim
1. A method for evaluation, within a motor vehicle, of the characteristics of a front element, said motor vehicle being equipped at least with a first camera and a second camera, wherein the method comprises the steps of:
- placing the first camera in a first position and the second camera in a second position, wherein the first position and the second position are placed considering an orthogonal three-dimensional reference frame having an abscissa axis oriented parallel to a direction of displacement of the vehicle, a horizontal applicate axis and a vertical ordinate axis;
the first camera and the second camera respectively have a first optical axis and a second optical axis, respectively, that are generally parallel to the abscissa axis;
the first camera and the second camera have a first offset along the applicate axis;
the first camera and the second camera have a second offset along the vertical ordinate axis;
establishing a first evaluation of a distance separating the vehicle from the front element by using the first offset to carry out a first stereoscopic calculation;
establishing a second evaluation of the distance separating the vehicle from the front element by using the second offset to carry out a second stereoscopic calculation;
determining the distance separating the vehicle from the front element by combining the first distance evaluation and the second distance evaluation; and
capturing a first image with said first and second cameras at the same point in time;
said first stereoscopic calculation being made using said first image captured by said first and second cameras and said first offset and said first and second cameras each capturing a second image at the same point in time, said second stereoscopic calculation being made using said second image captured by said first and second cameras and said second offset;
determining said first offset and said second offset prior to said capturing step.
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Accused Products
Abstract
A method that utilizes at least a first camera and a second camera, which have optical axes that are parallel to a first axis of an orthogonal reference frame, the first and the second camera being positioned so as to have a first offset along a second axis and a second offset along a third axis of the orthogonal reference frame. The first offset is used to carry out a first stereoscopic calculation, and the second offset is used to carry out a second stereoscopic calculation, the distance sought finally being established by taking into consideration these two stereoscopic calculations.
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Citations
19 Claims
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1. A method for evaluation, within a motor vehicle, of the characteristics of a front element, said motor vehicle being equipped at least with a first camera and a second camera, wherein the method comprises the steps of:
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placing the first camera in a first position and the second camera in a second position, wherein the first position and the second position are placed considering an orthogonal three-dimensional reference frame having an abscissa axis oriented parallel to a direction of displacement of the vehicle, a horizontal applicate axis and a vertical ordinate axis; the first camera and the second camera respectively have a first optical axis and a second optical axis, respectively, that are generally parallel to the abscissa axis; the first camera and the second camera have a first offset along the applicate axis; the first camera and the second camera have a second offset along the vertical ordinate axis; establishing a first evaluation of a distance separating the vehicle from the front element by using the first offset to carry out a first stereoscopic calculation; establishing a second evaluation of the distance separating the vehicle from the front element by using the second offset to carry out a second stereoscopic calculation; determining the distance separating the vehicle from the front element by combining the first distance evaluation and the second distance evaluation; and capturing a first image with said first and second cameras at the same point in time; said first stereoscopic calculation being made using said first image captured by said first and second cameras and said first offset and said first and second cameras each capturing a second image at the same point in time, said second stereoscopic calculation being made using said second image captured by said first and second cameras and said second offset; determining said first offset and said second offset prior to said capturing step. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A motor vehicle equipped at least with a first camera and a second camera for determining, using a stereoscopic calculation, characteristics of a front element, wherein the first camera is placed in a first position and the second camera is placed in a second position, the first position and the second position being placed in consideration of an orthogonal three-dimensional reference frame having an abscissa axis oriented parallel to a direction of displacement of the vehicle, a horizontal applicate axis and a vertical ordinate axis;
- wherein
the first camera and the second camera respectively have a first optical axis and a second optical axis that are generally parallel to the abscissa axis; the first camera and the second camera have a first offset along the horizontal applicate axis; the first camera and the second camera have a second offset along the vertical ordinate axis; and capturing a first image with said first and second cameras at the same point in time; a first stereoscopic calculation being made using said first image captured by said first and second cameras and said first offset and said first and second cameras each capturing a second image at the same point in time, a second stereoscopic calculation being made using said second image captured by said first and second cameras and said second offset; determining said first offset and said second offset prior to said capturing step.
- wherein
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13. A method for determining a distance between a front element and a vehicle, said method comprising the steps of:
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situating a first camera at a first position on the vehicle; situating a second camera at a second position on the vehicle; determining a first offset for said first and second cameras along a first axis; determining a second offset for said first and second cameras along a second axis; using said first offset to determine a first distance and said second offset to determine a second distance; establishing a first evaluation of a distance separating the vehicle from the front element by using the first offset to carry out a first stereoscopic calculation; establishing a second evaluation of the distance separating the vehicle from the front element by using the second offset to carry out a second stereoscopic calculation; and capturing a first image with said first and second cameras at the same point in time; said first stereoscopic calculation being made using said first image captured by said first and second cameras and said first offset and said first and second cameras each capturing a second image at the same point in time, said second stereoscopic calculation being made using said second image captured by said first and second cameras and said second offset; and using said first and second stereoscopic calculations to determine the distance between the front element and the vehicle. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification