Marine navigation device with improved contour lines
First Claim
1. A device comprising:
- a display;
a memory element configured to store contour line data for one or more bodies of water, the contour line data indicating all of the geolocations of underwater terrain that exist at a depth of water; and
a processing element in communication with the memory element, the processing element configured to—
identify a high contour line density area of the contour line data having at least three adjacent contour lines within a threshold distance, update the contour line data to reduce contour line density in the high contour line density area by selectively removing at least a portion of the at least three adjacent contour lines in the high contour line density area, and store the updated contour line data in the memory element.
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Abstract
A marine navigation device comprises a location determining element, a display, a memory element, and a processing element. The location determining element determines a current geolocation of a marine vessel on a first body of water. The display displays a map representation. The memory element stores digital elevation model data and sonar data for a plurality of bodies of water. The processing element is in communication with the memory element and is configured to select the digital elevation model data or the sonar data from the memory element corresponding to the first body of water, calculate contour line data, the contour line data determining a plurality of contour lines, update the contour line data by selectively removing at least a portion of the contour lines, and generate a map representation including contour lines derived from the updated contour line data, and control the display to visually present the map representation.
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Citations
20 Claims
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1. A device comprising:
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a display; a memory element configured to store contour line data for one or more bodies of water, the contour line data indicating all of the geolocations of underwater terrain that exist at a depth of water; and a processing element in communication with the memory element, the processing element configured to— identify a high contour line density area of the contour line data having at least three adjacent contour lines within a threshold distance, update the contour line data to reduce contour line density in the high contour line density area by selectively removing at least a portion of the at least three adjacent contour lines in the high contour line density area, and store the updated contour line data in the memory element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A device comprising:
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a display; a memory element configured to store contour line data for one or more bodies of water, the contour line data indicating all of the geolocations of underwater terrain that exist at a depth of water; and a processing element in communication with the memory element, the processing element configured to— identify a high contour line density area of the contour line data having at least three adjacent contour lines within a threshold distance, update the contour line data to reduce contour line density in the high contour line density area by selectively removing at least a portion of the at least three adjacent contour lines in the high contour line density area, store the updated contour line data in the memory element, and generate a map representation of at least a portion of the one or more bodies of water, the map representation including contour lines derived from the updated contour line data. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A device comprising:
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a display; a memory element configured to store contour line data for one or more bodies of water, the contour line data indicating all of the geolocations of underwater terrain that exist at a depth of water; and a processing element in communication with the memory element, the processing element configured to— identify a high contour line density area of the contour line data having at least three adjacent contour lines within a threshold distance based on the number of contour lines in a geographic area, update the contour line data to reduce contour line density in the high contour line density area by selectively removing at least a portion of the at least three adjacent contour lines in the high contour line density area, store the updated contour line data in the memory element, and generate a map representation of at least a portion of the one or more bodies of water, the map representation including contour lines derived from the updated contour line data. - View Dependent Claims (19, 20)
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Specification