Screen-door effect¶
A display artifact in which the nonemissive gaps between pixels or subpixels become visibly resolved as a dark grid over the image.
Core Idea¶
The screen-door effect occurs when angular pixel pitch and fill factor make pixel boundaries visible, especially at short viewing distance or under optical magnification in projection and head-mounted displays. Discrete emitters sample the image while inactive interpixel areas modulate luminance; the eye resolves that lattice when its spatial frequency and contrast fall within visual sensitivity. The abstraction is therefore identified by a declared carrier, a transformation or constraint over that carrier, and an invariant that tells an analyst whether the named structure is genuinely present.
Scope of Application¶
Screen-door effect belongs to display technology and is useful where the analyst can specify the typed display technology carrier, defining objects and relations, parameters, conventions, evidence, boundary cases, and comparison targets, then evaluate the visible grid is spatially registered to the physical pixel or subpixel lattice and changes predictably with pitch, fill factor, magnification, distance, and acuity. The scope is broad within that domain but bounded by the need for the visible grid is spatially registered to the physical pixel or subpixel lattice and changes predictably with pitch, fill factor, magnification, distance, and acuity. The entry records a descriptive analytical identity; practical use requires the governing domain's evidence, standards, and safety obligations.
Clarity¶
The abstraction clarifies a crowded vocabulary by making the visible grid is spatially registered to the physical pixel or subpixel lattice and changes predictably with pitch, fill factor, magnification, distance, and acuity the center of the account. A claim should name the carrier, the governing operation or relation, the applicable assumptions, and the recognition test. A bare label is insufficient because the name Screen-door effect can be used for a formal identity, an implementation, or a neighboring result unless carrier and convention are stated.
Manages Complexity¶
Without the abstraction, an analyst must reason directly over many local details: the carrier roles, admissibility assumptions, competing conventions, derived invariants, boundary cases, and proof or validation obligations specific to Screen-door effect. Screen-door effect compresses them into the roles in the structural signature. That compression permits comparison across instances without erasing the variables that determine validity. It also exposes which details may be varied safely and which are constitutive.
Abstract Reasoning¶
- Identify the carrier. State what the elements, states, objects, or observations are: the typed display technology carrier, defining objects and relations, parameters, conventions, evidence, boundary cases, and comparison targets. Reject examples whose alleged carrier belongs to a different problem. 2. Lock the constitutive rule. Express the visible grid is spatially registered to the physical pixel or subpixel lattice and changes predictably with pitch, fill factor, magnification, distance, and acuity independently of one notation or implementation.
Knowledge Transfer¶
Knowledge transfers strongly among subfields of display technology because they reuse the typed display technology carrier, defining objects and relations, parameters, conventions, evidence, boundary cases, and comparison targets, Discrete emitters sample the image while inactive interpixel areas modulate luminance; the eye resolves that lattice when its spatial frequency and contrast fall within visual sensitivity., and type the carrier, state every parameter and convention in the definition, test that the visible grid is spatially registered to the physical pixel or subpixel lattice and changes predictably with pitch, fill factor, magnification, distance, and acuity, compare the nearest accepted identity, and report counterexamples, uncertainty, and limiting cases.
Relationships to Other Abstractions¶
Current abstraction Screen-door effect Domain-specific
Parents (1) — more general patterns this builds on
-
Screen-door effect is a kind of Aliasing Prime
The proposed strict upward parent is
prime:aliasing.
Hierarchy paths (2) — routes to 2 parentless roots
- Screen-door effect → Aliasing → Discretization-Induced Artifact
Neighborhood in Abstraction Space¶
Screen-door effect sits in a moderately populated region (55th percentile for distinctiveness): it has near-neighbors but no dense thicket of look-alikes.
Family — Imaging Geometry & Visual Transformation (33 abstractions)
Nearest neighbors
- Metropolis light transport — 0.89
- 3D projection — 0.88
- Vignette (graphic design) — 0.88
- Rendering (computer graphics) — 0.87
- Structure from motion (psychophysics) — 0.87
Computed from structural-signature embeddings · 2026-09-08