| Subject | English | German |
| opt. | optical spatial filtering | optisches räumliches Filtern (a technique for detecting signal patterns in a noisy background) |
| opt. | spatial filtering | räumliche Filterung |
| med.appl. | spatial filtering | spatiales Filtern |
| microel. | spatial filtering | räumliches Filtern |
| opt. | spatial filtering pinhole | Raumfilterblende |