{
  "abstract": "The present disclosure relates to the technical field of robots, and in particular, discloses a map alignment method. The method includes the following steps: acquiring boundary information of a map, wherein the boundary information includes state information of boundary lines and a total boundary length, and the total boundary length is a sum of lengths of all the boundary lines; classifying all boundary lines that meet a preset condition into one orthogonal line group; determining a relationship between a reference ratio and a determination threshold, if a first relationship is met, establishing a plane Cartesian coordinate system according to a first reference, and if a second relationship is met, establishing a plane Cartesian coordinate system according to a second reference, wherein the reference ratio is a ratio of a maximum boundary line length to the total boundary length, with the boundary line length being defined as a sum of lengths of all boundary lines within one orthogonal line group; and aligning the map according to the plane Cartesian coordinate system, and outputting the boundary information of the aligned map to a user terminal. The method decides the plane Cartesian coordinate system by determining the reference ratio, thus achieving the alignment of the map.",
  "assignees": [
    "ZHEJIANG SUNSEEKER IND CO LTD"
  ],
  "authors": [
    "HU LANG",
    "LIU JIHAN"
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  "published_at": "2026-09-15T19:13:44.922256Z",
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  "source_date": "2026-02-25",
  "source_id": "EP-4700518-A1",
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  "supersedes": null,
  "title": "Method for straightening map",
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