Projíciót

Projíciót is the Hungarian accusative form of the noun projíció, which translates to "projection" in English. The term is used across a variety of disciplines, including mathematics, computer graphics, film, and cognitive psychology, to describe the mapping or representation of one set of data onto another.

In geometry and linear algebra, projection refers to the linear transformation that maps a vector space onto a subspace. The process is idempotent, meaning that applying the projection twice yields the same result as applying it once. Practical examples include orthogonal projection onto a plane, where vectors are decomposed into components parallel and perpendicular to that plane. The formula for an orthogonal projection onto a subspace spanned by a unit vector **u** is P(**v**) = (**v**·**u**) **u**.

Within computer graphics and imaging, a projection transforms three‑dimensional object coordinates into a two‑dimensional viewport. Common projection types include perspective projection, which simulates human eye depth perception, and orthographic projection, which preserves parallelism of lines but distorts depth. Film projection historically refers to the mechanical process of projecting a recorded motion picture onto a screen for public viewing, a practice that evolved from the earliest 16‑step motion picture projectors to modern digital cinema projectors.

In cognitive psychology, the term projection denotes a defense mechanism whereby an individual attributes personal feelings, impulses, or motives to other people. Here, projíciót denotes the act of projecting internal states onto external objects or persons. The psychological concept arises from psychoanalytic theory and has been explored in both clinical and research settings.

Overall, projíciót reflects a fundamental concept of mapping between domains, whether it be physical, mathematical, visual, or mental. Its application is widespread, and its precise definition varies with context.