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  2. Incidence geometry - Wikipedia

    en.wikipedia.org/wiki/Incidence_geometry

    For every point X and line l there is a unique point on l that is closest to X. A near 0-gon is a point, while a near 2-gon is a line. The collinearity graph of a near 2-gon is a complete graph. A near 4-gon is a generalized quadrangle (possibly degenerate). Every finite generalized polygon except the projective planes is a near polygon.

  3. Pinhole camera model - Wikipedia

    en.wikipedia.org/wiki/Pinhole_camera_model

    A point R at the intersection of the optical axis and the image plane. This point is referred to as the principal point [2] or image center. A point P somewhere in the world at coordinate (,,) relative to the axes X1, X2, and X3. The projection line of point P into the camera.

  4. Point (geometry) - Wikipedia

    en.wikipedia.org/wiki/Point_(geometry)

    In geometry, a point is an abstract idealization of an exact position, without size, in physical space, [1] or its generalization to other kinds of mathematical spaces.As zero-dimensional objects, points are usually taken to be the fundamental indivisible elements comprising the space, of which one-dimensional curves, two-dimensional surfaces, and higher-dimensional objects consist.

  5. Genetic algorithm - Wikipedia

    en.wikipedia.org/wiki/Genetic_algorithm

    There are more examples of AGA variants: Successive zooming method is an early example of improving convergence. [26] In CAGA (clustering-based adaptive genetic algorithm), [ 27 ] through the use of clustering analysis to judge the optimization states of the population, the adjustment of pc and pm depends on these optimization states.

  6. Projective space - Wikipedia

    en.wikipedia.org/wiki/Projective_space

    In synthetic geometry, point and line are primitive entities that are related by the incidence relation "a point is on a line" or "a line passes through a point", which is subject to the axioms of projective geometry. For some such set of axioms, the projective spaces that are defined have been shown to be equivalent to those resulting from the ...

  7. Beltrami–Klein model - Wikipedia

    en.wikipedia.org/wiki/Beltrami–Klein_model

    Many hyperbolic lines through point P not intersecting line a in the Beltrami Klein model A hyperbolic triheptagonal tiling in a Beltrami–Klein model projection. In geometry, the Beltrami–Klein model, also called the projective model, Klein disk model, and the Cayley–Klein model, is a model of hyperbolic geometry in which points are represented by the points in the interior of the unit ...

  8. Real point - Wikipedia

    en.wikipedia.org/wiki/Real_point

    A point of the original geometric space is defined by an equivalence class of homogeneous vectors of the form λu, where λ is an nonzero complex value and u is a real vector. A point of this form (and hence belongs to the original real space) is called a real point, whereas a point that has been added through the complexification and thus does ...

  9. Point location - Wikipedia

    en.wikipedia.org/wiki/Point_location

    The point location problem is a fundamental topic of computational geometry. It finds applications in areas that deal with processing geometrical data: computer graphics , geographic information systems (GIS), motion planning , and computer aided design (CAD).