CVonline: Object, World and Scene Representations


  1. General
  2. Full Object Representations
    1. Flat
    2. Hierarchical, By Parts, Structural Decomposition, Subcomponent Representation
  3. Functional Representations
  4. Geometric Representation of Model Features (See also Shape Properties)
    1. CAD Representations
    2. Curves
      1. Chain Codes
      2. Circles
      3. Conics
      4. Contour Parametric and Contour Complex Functions
      5. Crack Codes
      6. Curvature Primal Sketch
      7. Curvature Scale Space
      8. Curve Cross Section Functions
      9. Edgelet, Contourlet
      10. Ellipses
      11. Fourier Descriptors
      12. Intrinsic Equations
      13. Lines
      14. Line Moments
      15. Phi-S Curves, Tangent Angle Functions
      16. Polyline, Polycurves, Polygonal Approximations
      17. Radius Vector Functions
      18. Signatures
      19. Snakes, Active Contours (See also Active Shape Models)
        1. Gradient Flow Vector Snakes
      20. Splines
      21. Superellipses
      22. Supershapes
      23. Support Functions
      24. Torsion, Curvature
      25. Torsion Scale Space
      26. Wavelet-based Curve Descriptors (See also the generic Wavelets)
      27. Width Functions
    3. Points
      1. Local Point Invariants
      2. Local Scale Descriptions
      3. Non-Linear Point Distribution Models
      4. Point Distribution Models
      5. Surflet
    4. Regions
      1. Axial Representations (Medial Axis, Skeletons, Smoothed Local Symmetry)
        1. Affine Invariant Skeletons
      2. Convex Hull
      3. Region Cross Section Functions
      4. Delaunay Triangulation/Voronoi Diagrams
      5. Grey-Level Distribution Models
        1. Central Moments
      6. Kendall's Shape Representation
      7. Pixel, Quadtrees/Irregular Quadtrees, Occupancy Grids
      8. Polygons
      9. Profiles/Projections
      10. Pyramids (See Image Pyramids and Scale Reduction)
      11. Region Graph Representations
      12. Run-length Coding
      13. Subcomponent Decompositions
      14. Topological Representations
      15. Trees
    5. Surfaces
      1. Algebraic Point Set Surfaces
      2. Common Surface Representations (See geometry)
      3. Conformal Mapping
      4. Local Point/Patch Representations
      5. Mean and Gaussian Curvature Sign Classes
      6. Membranes, Rubber Sheets and Thin Plates, and their Discontinuities
      7. Planar Patches/Faces, Edges and Vertices/Boundary Representations
      8. Principal Curvature Sign Classes
      9. Quadric Patches
      10. Shape, Curvature Magnitude Classes
      11. Sparse Tensors (Mian)
      12. Spherical Attribute Image
      13. Spline Surfaces
      14. Surface Triangulations/Meshes (Fixed, Adaptive, Deformable)
    6. Object Centered Representations
    7. Objects/Volumes
      1. 3D Skeletons
      2. Aspect Graph
      3. Balloons
      4. Constructive Solid Geometry/Set-Theoretic Modeling
      5. Gaussian Sphere/Extended Gaussian Image/Constellation EGI
      6. Generalized Cones/Cylinders
      7. Geons
      8. Hyperquadrics
      9. Medial Surfaces
      10. Quadrics
      11. Shape Distribution
      12. Shape Histogram
      13. Spin Images
        1. Spherical Spin Images
      14. Spherical Harmonics
      15. Superquadrics
      16. Supershapes
      17. Surface Patches
      18. Tetrahedral
      19. Volumetric Frequency
      20. Voxel, Octree/Irregular Octree, Occupancy Grid
      21. Wire-frames
  5. Logical and Symbolic Representations
    1. Frames
    2. "Knowledge Representation" Languages
    3. Predicate Calculus
    4. Relational
    5. Semantic Nets
  6. Motion Representations
  7. Multi-Scale Representation Approaches
    1. Fractals (See the generic Fractals)
    2. Scale Space (See the generic Scale Space)
    3. Wavelets (See the generic Wavelets)
  8. Non-Rigid Model Representations (see also Point Distribution Models)
    1. Active Appearance Models
    2. Active Shape Models
    3. Deformable Shapes
      1. Curves (See Snakes, Active Contours)
      2. Regions
      3. Surfaces
      4. Volumes
    4. Linear Structure Models
    5. Motion Models
    6. Parametric Models
    7. Piecewise Rigidity
    8. Time Varying Shape, Spatio-Temporal Models
  9. Non-Symbolic Representations
    1. Eigenspace / Principal Component Representations
    2. Interest Points
    3. Intrinsic Images
    4. Plenoptic Function Representations/Lightfields/Image-Based Rendering
  10. Procedural Representations
    1. Production Rules
    2. Visual Routines
  11. Shape Classes/Shape Families
  12. Temporal Representations (See also Temporal Event Analysis)
    1. Short-term Activity Representations
      1. Motion History/Energy Models
      2. Volume Motion Template
    2. Long-term Activity Representations
      1. Global Representations
      2. Frame-by-frame Models
        1. Hidden Markov/Finite State Models
        2. Target Trajectory Models
  13. Types of Models
    1. Appearance
    2. Aspect (See Aspects/Characteristic Views)
    3. Iconic (See Iconic Image Models)
    4. Geometric
    5. Graphs (See Graph)
    6. Relational
    7. Property
  14. Viewpoint Dependent, Viewer Centered Representations
    1. Iconic Image Models
    2. Aspects/Characteristic Views
    3. Singularity Events
    4. Tessellated Viewsphere Approximations

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