SAR image control point positioning method and device, equipment and storage medium

• Main Authors: CHEN GANG, ZHANG XIAOWEI, QIAN FANGMING, ZHANG HAO, MENG XIN, WANG SAI, LIU ZHIMING, LOU LIANGSHENG
• Format: Patent
• Language: Chinese; English
• Published: 23.01.2024
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; GYROSCOPIC INSTRUMENTS; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; MEASURING DISTANCES, LEVELS OR BEARINGS; NAVIGATION; PHOTOGRAMMETRY OR VIDEOGRAMMETRY; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; SURVEYING; TESTING

The invention relates to an SAR image control point positioning method and device, equipment and a storage medium, and the method comprises the steps: obtaining a first SAR image and a second SAR image of a to-be-mapped region at different camera station positions; respectively acquiring a highlight point in the first SAR image as a first special display point and a highlight point in the second SAR image as a second special display point, and calculating rough ground coordinates of the special display points; according to the rough ground coordinates of the dominant display points, selecting points close to the first dominant display points from the second dominant display points as candidate matching points of the first dominant display points, and screening out homonymy points corresponding to the first dominant display points from the matching points; and determining an image control point in the first SAR image based on the homonymy point. Compared with a traditional mode of manually assigning the homony