Nautical chart isobath simplification safety assessment method
A technology of isobath and nautical chart, applied in the field of safety assessment of depth line simplification
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[0023] The realization process of the present invention is to use a computer to realize the safety assessment of the simplification of the isobath of the nautical chart. Suppose a certain isobath before simplification on the nautical chart and its corresponding simplified isobaths , using the method of the present invention to evaluate the safety of the simplification of the contour of the nautical chart, including the following steps, such as image 3 Shown:
[0024] Step a, read in the isobaths before simplification on the chart on all nodes , ,..., plane position ( );
[0025] Step b, from isobaths before simplification the first point of start, along the isobath direction to end point , to judge the relationship between the depth value of the sounding points near both sides of the isobath and the depth value of the isobath, the depth value of the sounding point on one side of the isobath should be less than (or equal to) the depth value of the isoba...
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