Optical power segmentation fitting report deviation evaluation and check point selection method

The invention discloses an optical power segmentation fitting report deviation evaluation and check point selection method. The method comprises the steps that a curve CD is distributed in a triangular area defined by a fitting straight line of the segment and fitting straight lines of two adjacent segments; the maximum deviation value range between fitting of each segment and real power reporting is determined by the region; for the outermost segment DE, as only one adjacent segment CD exists, the deviation is distributed in a triangular DEH area formed by a fitting straight line DE of the segment, a fitting straight line extension line CD of the adjacent segment and a horizontal straight line EH passing through an edge check point; for a non-edge segment CD, two adjacent segments BC and DE exist; the deviation is distributed in a triangular CDG area defined by the segment fitting straight line CD and extension lines DE and BC of two adjacent segment fitting straight lines; according to the method, whether t