Anti-collision warning system for marine vehicle and anti-collision analysis method
First Claim
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1. An anti-collision warning system for marine vehicle comprising:
- at least one optical sensor covering at least partially the horizon of the marine vehicle, and supplying images;
an image processor that searches in real time in each image supplied by the optical sensor for groups of adjacent pixels according to the light intensity of each pixel of the image, that assesses a repeated appearance of each group of pixels in a predetermined number of successive images, that extracts groups constituting persistent objects visible on the surface of the sea, according to their repeated appearances while removing groups constituting non-persistent objects comprising at least one of waves, reflections, and foam, and that determines position and dimension information of at least one of the visible persistent objects; and
anti-collision analysis control that periodically calculates the evolution of the position and dimension information of the at least one visible persistent object, and that assesses a risk of the marine vehicle colliding with the visible persistent object according to the evolution of the position and dimension information of the visible persistent object.
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Abstract
An anti-collision warning system for marine vehicle includes, an optical sensor covering at least partially the horizon of the marine vehicle, image processing means for extracting in real time from each image position information of objects visible on the surface of the sea, and anti-collision analysis means, which periodically calculate the evolution of the position information of each visible object, and which assess a risk of the marine vehicle colliding with each visible object according to the evolution of the position information of the visible object.
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Citations
22 Claims
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1. An anti-collision warning system for marine vehicle comprising:
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at least one optical sensor covering at least partially the horizon of the marine vehicle, and supplying images; an image processor that searches in real time in each image supplied by the optical sensor for groups of adjacent pixels according to the light intensity of each pixel of the image, that assesses a repeated appearance of each group of pixels in a predetermined number of successive images, that extracts groups constituting persistent objects visible on the surface of the sea, according to their repeated appearances while removing groups constituting non-persistent objects comprising at least one of waves, reflections, and foam, and that determines position and dimension information of at least one of the visible persistent objects; and anti-collision analysis control that periodically calculates the evolution of the position and dimension information of the at least one visible persistent object, and that assesses a risk of the marine vehicle colliding with the visible persistent object according to the evolution of the position and dimension information of the visible persistent object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An anti-collision warning method in an anti-collision warning system for marine vehicle comprising at least one optical sensor covering at least partially the horizon of the marine vehicle, the method comprising:
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acquiring from the optical sensor images including a portion of the horizon of the marine vehicle; searching in real time in each image acquired for groups of adjacent pixels according to the light intensity of each pixel of the image; assessing a repeated appearance of each group of pixels in a predetermined number of successive images acquired; extracting groups constituting persistent objects visible on the surface of the sea, according to their repeated appearances while removing groups constituting non-persistent objects comprising at least one of waves, reflections, and foam, determining position and dimension information of at least one of the visible persistent objects; periodically calculating the evolution of the position and dimension information of the visible persistent object; and assessing a risk of the marine vehicle colliding with the visible persistent object according to the evolution of the position and dimension information of the visible persistent object, a visible persistent object being considered dangerous if there is a risk of the marine vehicle colliding with the visible persistent object. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification