Louis-Léopold Boilly was a French painter and draftsman. A creator of popular portrait paintings, he also produced a vast number of genre paintings documenting French middle-class social life. His life and work spanned the eras of monarchical France, the French Revolution, the Napoleonic Empire, the Bourbon Restoration and the July Monarchy. His 1800 painting Un Trompe-l'œil introduced the term trompe-l'œil, applied to the technique that uses realistic imagery to create the optical illusion that the depicted objects exist in three dimensions, though the "unnamed" technique itself had existed in Greek and Roman times.

Trompe-l'œil is an artistic term for the highly realistic optical illusion of three-dimensional space and objects on a two-dimensional surface. Trompe l'œil, which is most often associated with painting, tricks the viewer into perceiving painted objects or spaces as real. Forced perspective is a related illusion in architecture.