Map straightening method

Abstract

The invention relates to a map straightening method. The map correction method comprises the following steps: constructing a target map, and carrying out first filtering processing on the target map; extracting and grouping a plurality of straight lines in the target map to obtain a plurality of corresponding straight line groups; determining two adjacent straight line groups meeting a preset condition in the plurality of straight line groups as a target candidate group, and calculating an angle mean value of the target candidate group; and determining a straightening angle based on the angle mean value, and carrying out map straightening processing according to the straightening angle. According to the scheme, the straight line extraction precision can be improved, the optimal straightening angle is determined according to the global straight line, and the straightening angle obtaining accuracy is improved.

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