https://deeplearning.earth/tags/geometry/Recent content in Geometry on DeepLearning.EarthHugo -- gohugo.ioenMon, 19 Oct 2026 06:00:00 +0700https://deeplearning.earth/posts/2026-10-19_le90_geometry/Mon, 19 Oct 2026 06:00:00 +0700https://deeplearning.earth/posts/2026-10-19_le90_geometry/A ship in DOTA is four corners, written as eight coordinates. The detector stores four things: a center, a long side, a short side, and one angle. That convention is called le90. Width is the long edge. The angle of that edge sits between −90° and 90°. A vertical ship is −90°. Every Hub name ending in _le90_ uses this. How those eight coordinates become those four numbers is below.