• Thumbnail for Quadtree
    A quadtree is a tree data structure in which each internal node has exactly four children. Quadtrees are the two-dimensional analog of octrees and are...
    34 KB (4,712 words) - 16:58, 12 March 2025
  • Thumbnail for Z-order curve
    and used directly, which is called a linear quadtree, or they can be used to build a pointer based quadtree. The input points are usually scaled in each...
    21 KB (2,681 words) - 19:21, 8 February 2025
  • Thumbnail for Hashlife
    infinite grid, with the pattern in question centered near the origin. A quadtree (with sharing of nodes) is used to represent the field. A node at the kth...
    11 KB (1,558 words) - 04:04, 7 May 2024
  • Thumbnail for Octree
    subdividing it into eight octants. Octrees are the three-dimensional analog of quadtrees. The word is derived from oct (Greek root meaning "eight") + tree. Octrees...
    12 KB (1,452 words) - 16:04, 29 March 2025
  • are merged to create the segmented result. The technique incorporates a quadtree data structure, meaning that there is a parent-child node relationship...
    3 KB (448 words) - 01:34, 23 March 2021
  • Thumbnail for Binary space partitioning
    generalization of other spatial tree structures such as k-d trees and quadtrees, one where hyperplanes that partition the space may have any orientation...
    25 KB (2,903 words) - 14:54, 29 April 2025
  • Thumbnail for Barnes–Hut simulation
    Dynamic visualization of the quadtree structure of the Barnes-Hut algorithm for the 2D N-body problem...
    7 KB (814 words) - 09:15, 24 May 2025
  • paradigms. Finkel and J.L. Bentley created the data structure called the quadtree. Finkel was born in Chicago. He entered the University of Chicago, where...
    3 KB (216 words) - 12:59, 9 November 2024
  • Thumbnail for Binary code
    An example of a recursive binary space partitioning quadtree for a 2D index...
    17 KB (2,048 words) - 04:11, 3 April 2025
  • complex objects as compared using an arbitrary metric. Octree PH-tree Quadtree R-tree: Typically the preferred method for indexing spatial data. Objects...
    22 KB (2,041 words) - 12:04, 3 May 2025
  • constant k > 1. The algorithm uses shifted quadtrees. The key concept of the algorithm is alignment to the quadtree grid. An object of size r is called k-aligned...
    31 KB (4,745 words) - 09:50, 29 July 2024
  • Implicit k-d tree Min/max k-d tree Relaxed k-d tree Adaptive k-d tree Quadtree Octree Linear octree Z-order UB-tree R-tree R+ tree R* tree Hilbert R-tree...
    9 KB (914 words) - 05:55, 20 March 2025
  • Thumbnail for Shapefile
    {content-type: text/plain OR application/vnd.shp } .qix — an alternative quadtree spatial index used by MapServer and GDAL/OGR software {content-type: application/vnd...
    16 KB (1,626 words) - 14:25, 19 May 2025
  • Thumbnail for Binary tiling
    called a Böröczky tiling) is a tiling of the hyperbolic plane, resembling a quadtree over the Poincaré half-plane model of the hyperbolic plane. The tiles are...
    26 KB (3,095 words) - 03:51, 27 May 2025
  • pushdown transducer p-way merge sort qm sort qsort quadratic probing quadtree quadtree complexity theorem quad trie quantum computation queue quicksort Rabin–Karp...
    35 KB (3,135 words) - 18:46, 6 May 2025
  • partitioning index with a structure similar to that of a quadtree or octree. However, unlike quadtrees, it uses a splitting policy based on tries and similar...
    27 KB (4,058 words) - 21:16, 11 April 2024
  • Thumbnail for T-tree
    tree, B+ tree, B*-tree, UB-tree) Dancing tree Fusion tree k-d tree Octree Quadtree R-tree Radix tree Top tree Lehman, Tobin J.; Carey, Michael J. (25–28 August...
    7 KB (1,030 words) - 20:15, 17 May 2024
  • Grid Reference System Universal Transverse Mercator coordinate system Quadtree Geohash https://www.researchgate.net/publication/389945471_Natural_Area_Coding_System...
    4 KB (451 words) - 11:01, 19 March 2025
  • Thumbnail for Subpaving
    subpavings. In computation, a well-known application of subpaving in R² is the Quadtree data structure. In image tracing context and other applications is important...
    5 KB (439 words) - 19:40, 23 March 2024
  • Wróblewski, P.; Midura, M. (October 2021). "A Finite Volume Method using a Quadtree Non-Uniform Structured Mesh for Modeling in Electrical Capacitance Tomography"...
    12 KB (1,393 words) - 13:43, 27 May 2024
  • Cueto, E.; Doblaré, M. (2005). "A natural neighbour Galerkin method with quadtree structure". Int. J. Numer. Methods Eng. 63 (6): 789–812. Bibcode:2005IJNME...
    9 KB (1,124 words) - 13:30, 22 June 2024
  • Thumbnail for Gerris (software)
    fluid mechanics) using various data structures (including of course the quadtree/octree) and optimized operators for iteration, derivation, etc. Solvers...
    12 KB (1,277 words) - 06:53, 8 January 2025
  • Thumbnail for Scene graph
    regular objects such as heightfields and polygon meshes tend to employ quadtrees and octrees, which are specialized variants of a 3D bounding box hierarchy...
    16 KB (2,230 words) - 22:28, 10 March 2025
  • Thumbnail for VP9
    called superblocks of 64×64 pixels which are adaptively subpartitioned in a quadtree coding structure. They can be subdivided either horizontally or vertically...
    63 KB (5,072 words) - 04:18, 2 April 2025
  • Kirchhoffer; Haricharan Lakshman; et al. "Video Compression Using Nested Quadtree Structures, Leaf Merging and Improved Techniques for Motion Representation...
    155 KB (16,601 words) - 18:05, 17 May 2025
  • easier to implement, performs worse than a quadtree implementation. They find that as it is, [...] a quadtree data structure seems more adapted than the...
    9 KB (1,262 words) - 02:27, 14 April 2025
  • compression efficiency, AVS2 adopts a block partition structure based on the quadtree, including the CU (Coding Unit), PU (Prediction Unit) and TU (Transform...
    21 KB (2,871 words) - 00:23, 4 March 2025
  • Thumbnail for Pathfinding
    Quadtrees can be used for hierarchical path finding...
    15 KB (1,994 words) - 07:54, 19 April 2025
  • largest coding unit size. The arrangement of CUs in a CTB is known as a quadtree since a subdivision results in four smaller regions. CUs are then divided...
    11 KB (1,116 words) - 23:51, 5 December 2024
  • products, and transportation". 2011 Hanan Samet For "pioneering research on quadtrees and other multidimensional spatial data structures for sorting spatial...
    21 KB (770 words) - 12:26, 11 May 2025