# back projection

> English word · Noun

## Definitions
1. A cinematic technique in which live action is filmed in front of a screen on which the background action or a background scene is projected.
2. tomographic reconstruction

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/back-projection