Enter the minimum permissible number of 3D points around each local peak in the text box. If the number of 3D points which are not at the center of the search range but in the search range is lower than the set number, the center 3D point of the search range cannot be detected as a local peak. If a number R is set as [Search Range], specify a number between 1 and (2R + 1)^2 -1.