blockings

Noun

blocking (countable and uncountable, plural blockings)

1. The act by which something is blocked; an obstruction.
   • blocking of major opposition sites
2. The precise movement and positioning of actors in order to facilitate a performance (originally planned using miniature blocks).
3. Blocks used to support (a building, etc.) temporarily.
4. A feature that prevents a keyboard from registering multiple simultaneous keypresses that would cause ghosting.
   • Examine your matrix map, and make sure that no three keystrokes form a rectangle with a fourth keystroke that will cause you problems. This prevents both ghosting and blocking.2011, John St. Clair, Project Arcade: Build Your Own Arcade Machine, page 218
5. A rectangular discontinuity as an artifact of separating a discrete signal into blocks that are processed individually.
   • Blocking is an annoying effect in image compression using JPEG especially at low bit-rates.2017, Sekine Asadi Amiri, Hamid Hassanpour, Image compression using JPEG with reduced blocking effects via adaptive down-sampling and self-learning image sparse representation, →DOI, page 1