Filtering method based on morphological template conformal in three-dimensional landform reconstruction

• Main Authors: YAN ZHIYUAN, LI FEIYA, JIANG GUANGQUAN, DU WEIGANG, YAN LILING, ZHENG CHUANJIANG, HUANG WEIJIAN
• Format: Patent
• Language: Chinese; English
• Published: 31.01.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; PHYSICS

The invention provides a filtering method based on morphological template conformal in three-dimensional landform reconstruction, relates to the technical field of three-dimensional landform reconstruction, and solves the problem that the real contour of a ground feature cannot be accurately recovered due to the fact that the edges and angular points of the ground feature cannot be accurately identified and reserved by a current earth surface filtering method. The method comprises the following steps: firstly, acquiring a landform characterization map of a target ground object, then designing a plurality of morphological templates based on regular shapes of angular points, detecting to-be-processed edges and angular point positions in the landform characterization map by using the morphological templates, then judging whether pixel codes of the landform characterization map are successfully matched with any morphological template or not, and if yes, judging whether the pixel codes of the landform characteriza