• In projective geometry, a homography is an isomorphism of projective spaces, induced by an isomorphism of the vector spaces from which the projective spaces...
    30 KB (3,641 words) - 01:24, 25 February 2024
  • Thumbnail for Homography (computer vision)
    any two images of the same planar surface in space are related by a homography (assuming a pinhole camera model). This has many practical applications...
    7 KB (958 words) - 10:04, 15 January 2023
  • A homography may refer to homography, a type of isomorphism of projective spaces, homography (computer vision), a mapping relating perspective images of...
    360 bytes (77 words) - 19:37, 9 January 2014
  • skew-symmetric matrices and special orthogonal matrices. The transform is a homography used in real analysis, complex analysis, and quaternionic analysis. In...
    14 KB (2,248 words) - 05:08, 9 May 2024
  • Thumbnail for Homograph
    A homograph (from the Greek: ὁμός, homós 'same' and γράφω, gráphō 'write') is a word that shares the same written form as another word but has a different...
    9 KB (693 words) - 07:06, 7 May 2024
  • Thumbnail for Image stitching
    erroneous measurements, or simply incorrect data. For the problem of homography estimation, RANSAC works by trying to fit several models using some of...
    22 KB (2,802 words) - 15:31, 9 April 2024
  • of homographies by automorphic collineations. In particular, the collineations of the real projective plane PG(2, R) are exactly the homographies, as...
    14 KB (1,751 words) - 12:47, 30 March 2024
  • eight-dimensional space of dual quaternions. This 3-flat F represents space, and the homography constructed, restricted to F, is a screw displacement of space. Let a...
    30 KB (4,394 words) - 15:23, 3 April 2024
  • Thumbnail for Cross-ratio
    not certain in a ring). One approach to cross ratio interprets it as a homography that takes three designated points to 0, 1, and ∞. Under restrictions...
    30 KB (4,680 words) - 12:46, 13 May 2024
  • Thumbnail for Projective line over a ring
    of A. The projective line P1(A) is equipped with a group of homographies. The homographies are expressed through use of the matrix ring over A and its...
    24 KB (2,906 words) - 22:49, 17 February 2024
  • Thumbnail for Projective plane
    whose fixed structure forms a plane are called planar collineations. A homography (or projective transformation) of PG(2, K) is a collineation of this type...
    51 KB (6,625 words) - 03:10, 5 February 2024
  • of K. As homographies of P(V) are induced by linear endomorphisms of V, it follows that, given two frames, there is exactly one homography mapping the...
    5 KB (785 words) - 07:56, 12 December 2023
  • transformation is the restriction to the field of a projective transformation or homography of the projective line. When a, b, c, d are integer (or, more generally...
    12 KB (1,675 words) - 00:38, 7 November 2023
  • Thumbnail for Cayley–Klein metric
    second homographies takes a to 1, thus normalizing an arbitrary a in the interval. The composed homographies are called the cross ratio homography of p...
    26 KB (3,691 words) - 20:52, 11 February 2024
  • Thumbnail for Quaternion
    207F. doi:10.1063/1.1703794. S2CID 121453456. Du Val, Patrick (1964). Homographies, quaternions, and rotations. Oxford mathematical monographs. Clarendon...
    96 KB (12,662 words) - 09:19, 16 May 2024
  • Thumbnail for Projective space
    Historically, homographies (and projective spaces) have been introduced to study perspective and projections in Euclidean geometry, and the term homography, which...
    37 KB (5,656 words) - 15:29, 9 February 2024
  • Thumbnail for Seal of Muhammad
    on Muhammad's shoulder-blade; also, محمد خاتمی by coincidential near-homography, the name of Mohammad Amir Khatam. Tavernier, Jean-Baptiste. "Nouvelle...
    10 KB (1,299 words) - 12:29, 11 February 2024
  • Thumbnail for Ray casting
    (aka: 3D projection, affine transformation, or projective transform (Homography)). Rendering an image in that way is difficult to achieve with hidden...
    28 KB (4,030 words) - 09:29, 21 February 2024
  • Thumbnail for Hyperbolic space
    +x_{n}^{2}))^{2}}}} . The isometry to the half-space model can be realised by a homography sending a point of the unit sphere to infinity. Hyperboloid model: In...
    11 KB (1,538 words) - 00:57, 19 April 2024
  • Thumbnail for Video super-resolution
    Branch to integrate aligned frames Some methods align frames by calculated homography between frames. TGA (Temporal Group Attention) divide input frames to...
    67 KB (6,506 words) - 23:27, 20 February 2024
  • Thumbnail for Special conformal transformation
    algebra B can be extended to P(B) through the projective line over a ring. Homographies on P(B) include translations: U ( q : 1 ) ( 1 0 t 1 ) = U ( q + t : 1...
    5 KB (651 words) - 02:51, 15 December 2023
  • French alphabet in replacement of consonant I and U, fixing many cases of homography. uil → vil (vile) Many changes were introduced in the sixth edition of...
    19 KB (2,058 words) - 00:27, 9 May 2024
  • \{\mathbf {x_{i}} \leftrightarrow \mathbf {x_{i}} '\}} . We wish to find a homography H ^ {\displaystyle {\hat {\mathbf {H} }}} and pairs of perfectly matched...
    2 KB (338 words) - 14:06, 18 December 2023
  • Thumbnail for Linear algebra
    specified and studied in terms of linear maps. This is also the case of homographies and Möbius transformations, when considered as transformations of a projective...
    64 KB (7,778 words) - 19:42, 15 May 2024
  • Thumbnail for Quadrilateral
    Quadrangle (geography) Homography - Any quadrilateral can be transformed into another quadrilateral by a projective transformation (homography) "Quadrilaterals...
    47 KB (6,758 words) - 13:49, 20 May 2024
  • Thumbnail for Image rectification
    problem Epipolar geometry Geographic information system Georeferencing Homography Image registration Photogrammetry Point set registration Rubbersheeting...
    17 KB (1,764 words) - 15:29, 9 April 2024
  • Thumbnail for Projective linear group
    called projective linear transformation, projective transformation or homography. If V is the n-dimensional vector space over a field F, namely V = Fn...
    44 KB (5,611 words) - 02:50, 2 March 2024
  • Thumbnail for Riemann sphere
    be written as a composition of these. The Möbius transformations are homographies on the complex projective line. In projective coordinates, the transformation...
    21 KB (3,325 words) - 22:01, 2 May 2024
  • function extension that is encountered when studying homographies of the real line. A homography is a function h ( x ) = a x + b c x + d {\displaystyle...
    75 KB (11,219 words) - 13:42, 15 May 2024
  • circumflex avoids possible homography with other words containing "u": sur ~ sûr(e)(s) (from seür → sëur): The homography with the adjective sur(e), "sour"...
    23 KB (2,964 words) - 21:01, 5 May 2024