What is the eponymous point in photogrammetry?

The same-named point in photogrammetry is the image point of the same point on the ground on different images.

Image points with the same name constitute a three-dimensional scene

Because the straight line passing through the photographic center S, the image point a with the same name, and the corresponding point A on the ground in one photo is the same as the straight line in another photo Through the photographic center S', the image point a' with the same name, and the corresponding point A on the ground intersect, the intersection point is the corresponding point A on the ground. After external orientation, the restored landform can directly reflect the actual situation on the ground. Please refer to "Photogrammetry" for details.