The rule of being specific also matches this title. This is for very very limited artificial video game footage and a database of known 3D scenes from the same. Hardly what I expected.
They are using recorded footage and depth maps from a FIFA game to 're-match' new footage with depth.
That the literal translations of the word 'signal'. At least in Germany that is not used for talking about a phone signal. It's 'empfang' (reception) instead. I am sure other languages differ as well?