noun
hidden surface removal
Technical term in computer graphics for determining which surfaces are not visible from a given viewpoint.
3Dレンダリングでは、隠面処理が重要なステップです。
In 3D rendering, hidden surface removal is an important step.
Compound of 隠 (hidden) + 面 (surface) + 処理 (processing). A technical term likely coined in the field of computer graphics.