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A field says which part of the subject an essay sits in and a series follows one idea in depth. This is the third axis: the named objects themselves, and every essay that touches each one.
There are 482 named objects here, and 380 of them are named by more than one essay. Those have a page of their own. The rest link straight to the single essay that names them — a page whose whole content is one card would say nothing the essay itself does not.
- Absolute conic 6 essays
- Adjugate 1 essay
- Affine map 15 essays
- Affine reconstruction 1 essay
- Affine structure 5 essays
- Altitude 1 essay
- Ambiguity 4 essays
- Anamorphosis 31 essays
- Angle from vanishing points 1 essay
- Angular diameter 2 essays
- Angular resolution 2 essays
- Angular size 7 essays
- Anisotropy 27 essays
- Aperture 11 essays
- Apparent-depth 6 essays
- Arc length 2 essays
- Arcminute 7 essays
- Area light 3 essays
- Area scale 34 essays
- Aspect ratio 5 essays
- Aspective 3 essays
- Astigmatism 7 essays
- Asymptote 1 essay
- Asymptotics 7 essays
- Attached-shadow 3 essays
- Attribution 10 essays
- Audience 1 essay
- Auxiliary view 3 essays
- Axis of a homology 3 essays
- Axis scale 6 essays
- Axonometric 7 essays
- Azimuth 4 essays
- Back projection 8 essays
- Baptistery 1 essay
- Barrel distortion 6 essays
- Baseline 42 essays
- Beltrami 4 essays
- Bias 8 essays
- Binocular disparity 11 essays
- Bisection 1 essay
- braccio 3 essays
- Brown–Conrady 7 essays
- bundle adjustment 15 essays
- Calibration 3 essays
- Camera calibration 29 essays
- Camera matrix 20 essays
- Camera recovery 1 essay
- Camera tilt 15 essays
- camera track 7 essays
- Canon of proportion 2 essays
- Canopy photography 1 essay
- Catoptric 2 essays
- Catoptric anamorphosis 2 essays
- Caustic 7 essays
- Central collineation 10 essays
- Centre of curvature 6 essays
- centre of projection 70 essays
- Centric point 4 essays
- Characteristic ratio 6 essays
- Chart 2 essays
- Chasles theorem 2 essays
- Cheirality 3 essays
- Chief ray 5 essays
- Chirality 1 essay
- Circle 3 essays
- Circle of confusion 7 essays
- Circle preserving 4 essays
- Circular points 6 essays
- Clip space 9 essays
- Collinearity 4 essays
- Collineation 10 essays
- Complete quadrangle 8 essays
- Composition 5 essays
- Conditioning 71 essays
- Cone 2 essays
- cone of vision 3 essays
- Conformal 13 essays
- Confusion matrix 1 essay
- Conic 38 essays
- Conic fit 6 essays
- Conic fitting 1 essay
- Connectedness 3 essays
- Constant ratio 5 essays
- Construction 1 essay
- Continuity 3 essays
- Contour generator 14 essays
- Control point 6 essays
- Convergence 3 essays
- Convergence order 1 essay
- Convex hull 3 essays
- Convolution 3 essays
- Correlation 5 essays
- Correspondence 19 essays
- costruzione legittima 5 essays
- Counting 3 essays
- Covariance 9 essays
- Coverage 3 essays
- Critical angle 3 essays
- Critical surface 4 essays
- Crop factor 5 essays
- Cross-ratio 42 essays
- Cross-ratio test 2 essays
- Cube map 3 essays
- Curvature 1 essay
- Cusp 4 essays
- Cylinder 2 essays
- Cylindrical mirror 1 essay
- Cylindrical projection 14 essays
- Dandelin sphere 1 essay
- Degeneracy 23 essays
- Degenerate configuration 12 essays
- Degenerate family 3 essays
- degrees of freedom 33 essays
- Demonstration 100 essays
- Depicted rectangle 13 essays
- Depth 1 essay
- Depth ambiguity 1 essay
- Depth buffer 5 essays
- Depth compression 16 essays
- Depth cue 18 essays
- Depth division 9 essays
- Depth from disparity 5 essays
- depth of field 5 essays
- Depth reversal 5 essays
- Depth scaling 3 essays
- Depth uncertainty 21 essays
- Desargues 7 essays
- Descriptive geometry 2 essays
- design matrix 5 essays
- Design plane 2 essays
- Detection 1 essay
- Developable 5 essays
- Developable surface 12 essays
- Development 3 essays
- Diagonal method 1 essay
- Diagonal point 1 essay
- diagonal vanishing point 1 essay
- Dihedral 6 essays
- Dihedral angle 4 essays
- Dimetric 3 essays
- Diminution 18 essays
- direct linear transform 1 essay
- Discrete not continuous 1 essay
- Discriminant 4 essays
- Disjoint sets 1 essay
- Disparity 24 essays
- Display 1 essay
- Distance point 9 essays
- Dome port 2 essays
- Drawing convention 11 essays
- Drawing office 1 essay
- Drawing system 40 essays
- Drift 7 essays
- Dual conic 4 essays
- Dual quadric 3 essays
- Duality 11 essays
- Dyadic rational 4 essays
- Edge stretch 6 essays
- Eigenvalues 2 essays
- eight-point algorithm 2 essays
- Elation 3 essays
- Elevation 12 essays
- Ellipse 7 essays
- Ellipse fit 1 essay
- Entrance pupil 18 essays
- Envelope 4 essays
- Epipolar geometry 14 essays
- Epipolar line 4 essays
- Epipole 18 essays
- Equal-area 2 essays
- Equal-area projection 4 essays
- Equidistant 7 essays
- Equidistant projection 6 essays
- Equirectangular 16 essays
- Equisolid 5 essays
- error propagation 32 essays
- Error term 8 essays
- Essential matrix 3 essays
- Exit pupil 3 essays
- Exploded view 1 essay
- Exposure 2 essays
- Exposure interval 1 essay
- Eye level 5 essays
- Facade 1 essay
- Faceted object 3 essays
- Factorisation 1 essay
- Falsifiability 10 essays
- field of view 42 essays
- Fisheye 17 essays
- Fixed point 14 essays
- Flat port 1 essay
- Focal conic 1 essay
- Focal length 55 essays
- Focal recovery 10 essays
- Focus 3 essays
- Forced perspective 3 essays
- Forensic geometry 1 essay
- Foreshortening 56 essays
- Four-centre ellipse 4 essays
- Free parameter 40 essays
- Frontier point 1 essay
- Fukinuki yatai 3 essays
- Fundamental matrix 17 essays
- Fusion limit 1 essay
- gauge freedom 14 essays
- Gaussian curvature 10 essays
- Gnomonic 5 essays
- Golden section 1 essay
- Gradient 1 essay
- Grazing incidence 7 essays
- Great circle 2 essays
- Ground line 9 essays
- Ground plane 15 essays
- Ground plane rectification 6 essays
- Handedness 4 essays
- Handscroll 13 essays
- Harmonic conjugate 12 essays
- Harmonic net 2 essays
- Harmonic range 2 essays
- Homogeneous coordinates 19 essays
- Homography 62 essays
- Homology 14 essays
- Homothety 1 essay
- Horizon 71 essays
- Horopter 7 essays
- Hyperbola 3 essays
- Hyperfocal distance 2 essays
- Identifiability 30 essays
- Imaged circle 7 essays
- Inaccessible vanishing point 2 essays
- Incidence 14 essays
- Inclined plane 4 essays
- Inscribed circle 1 essay
- instrument limit 63 essays
- Interocular distance 5 essays
- Invariant 5 essays
- Inverse perspective 11 essays
- Inverse projection 10 essays
- Invertibility 4 essays
- Involution 5 essays
- Isometric 10 essays
- Isometry 9 essays
- Jacobian 11 essays
- Kernel 1 essay
- Keystone 4 essays
- Laguerre formula 2 essays
- Lateral displacement 1 essay
- Lateral section 1 essay
- least squares 31 essays
- least-squares intersection 15 essays
- Lens distortion 1 essay
- Lens shift 1 essay
- Levenberg–Marquardt 3 essays
- Leverage 2 essays
- Light direction 1 essay
- Light field 1 essay
- Light foot 1 essay
- Light path 1 essay
- Light plane 2 essays
- Light recovery 11 essays
- line at infinity 17 essays
- Line of sight 1 essay
- Little planet 2 essays
- Loop closure 3 essays
- Marginal distortion 4 essays
- Matched surface 6 essays
- Measuring point 16 essays
- Metric rectification 6 essays
- Metric structure 3 essays
- Metric upgrade 3 essays
- Midpoint 16 essays
- Minimal solver 4 essays
- Minimax 1 essay
- Minor axis 5 essays
- Mirror 5 essays
- Mirror ball 1 essay
- Mirror plane 9 essays
- Model error 24 essays
- Motion blur 4 essays
- Moving viewpoint 22 essays
- Multiplier 1 essay
- Multiview 4 essays
- Multiview drawing 4 essays
- necessary, not sufficient 18 essays
- Nodal point 2 essays
- Normal incidence 1 essay
- Normalisation 2 essays
- Not a projection 6 essays
- Null result 1 essay
- Nullspace 3 essays
- Oblique projection 15 essays
- Occlusion 24 essays
- one-point perspective 8 essays
- Orthocentre 7 essays
- Orthographic 26 essays
- Orthographic limit 6 essays
- Orthographic projection 9 essays
- Outlier 3 essays
- Outline 5 essays
- Overfitting 4 essays
- Panini projection 2 essays
- Panorama 12 essays
- Parabola 3 essays
- Paraboloid 4 essays
- Parallax 26 essays
- Parallel light 1 essay
- Parallel projection 32 essays
- Pascal line 2 essays
- Pavement 7 essays
- Peephole 1 essay
- Pencil 9 essays
- Pencil of lines 1 essay
- Penumbra 5 essays
- Perspective divide 1 essay
- Perspectivity 3 essays
- Photogrammetry 1 essay
- Picture plane 58 essays
- Picture surface 39 essays
- Piecewise map 15 essays
- Pincushion distortion 1 essay
- Pinhole 12 essays
- Plan view 7 essays
- Planar homology 14 essays
- Plane at infinity 4 essays
- Plane of incidence 3 essays
- plane-parallel plate 2 essays
- Planometric 4 essays
- plumb-line calibration 6 essays
- Pohlke 3 essays
- point at infinity 40 essays
- Point light 27 essays
- Point source 2 essays
- Point spread function 2 essays
- Point view 1 essay
- Polar plane 3 essays
- pole and polar 8 essays
- Power law 10 essays
- Pre-warp 2 essays
- Principal point 42 essays
- Principal ray 4 essays
- Printable figure 1 essay
- Procedure 8 essays
- Projected not constructed 2 essays
- Projection direction 1 essay
- Projection from a point 1 essay
- Projective duality 8 essays
- Projective invariance 3 essays
- Projective invariant 34 essays
- Projective limit 7 essays
- Projective line 10 essays
- Projective map 44 essays
- Projective plane 3 essays
- Projective reconstruction 1 essay
- Projective stratification 9 essays
- Projective transformation 2 essays
- Projectivity 8 essays
- Pushbroom 19 essays
- Quadrature 2 essays
- Quadric 8 essays
- Quantisation 12 essays
- Rabatment 5 essays
- Radial distortion 13 essays
- Radiance 3 essays
- random walk 6 essays
- Rank 4 essays
- Rasterisation 1 essay
- Ray tracing 12 essays
- re-projection 3 essays
- Receiving surface 22 essays
- Reconstruction 25 essays
- reconstruction ambiguity 34 essays
- Rectification 22 essays
- rectified pair 8 essays
- Rectilinear projection 4 essays
- Redundancy 1 essay
- Reference length 18 essays
- Reflection 18 essays
- Refraction 8 essays
- Refractive index 9 essays
- Relative pose 6 essays
- Relief ambiguity 1 essay
- Reprojection error 12 essays
- Residual 84 essays
- Resolution 9 essays
- Reversal ambiguity 1 essay
- robust estimation 3 essays
- Roughness 4 essays
- Ruled surface 2 essays
- Sagitta 1 essay
- Sampling 10 essays
- Sampling grid 12 essays
- scale ambiguity 25 essays
- Screen 9 essays
- Seam 10 essays
- Seat 2 essays
- Section view 1 essay
- Self-polar triangle 2 essays
- Sensitivity 16 essays
- Sensor 5 essays
- Sensor format 3 essays
- Separation 2 essays
- Shadow 1 essay
- Shadow construction 1 essay
- Shadow projection 29 essays
- shadow vanishing point 8 essays
- Shear 4 essays
- Shift lens 3 essays
- Sighting point 2 essays
- Silhouette 8 essays
- Similarity 13 essays
- single-view metrology 34 essays
- singular values 12 essays
- Singularity 1 essay
- Site plan 2 essays
- Size-distance 4 essays
- skew rays 10 essays
- Snell's law 11 essays
- Solar altitude 1 essay
- Solid angle 9 essays
- Space curve 1 essay
- Sphere 2 essays
- Spherical aberration 5 essays
- Spherical panorama 5 essays
- Station point 56 essays
- Station-disagreement 4 essays
- Stereo pair 18 essays
- Stereoacuity 1 essay
- Stereographic 7 essays
- Stereographic projection 7 essays
- Stitching 5 essays
- Straight family 4 essays
- Straightedge construction 20 essays
- Stratification 1 essay
- Stretch 4 essays
- structure from motion 5 essays
- Structured-light 1 essay
- Subtended angle 11 essays
- Sun 1 essay
- Surface normal 2 essays
- Tangency 5 essays
- Tangent 4 essays
- Tangent cone 7 essays
- Tangent developable 2 essays
- Taught and unmeasured 14 essays
- Telephoto compression 3 essays
- Terminator 4 essays
- The viewer is in the geometry 1 essay
- Thin lens 5 essays
- three-point perspective 4 essays
- Tiled rendering 1 essay
- Tilt 1 essay
- Tolerance 16 essays
- Topology 3 essays
- total internal reflection 1 essay
- Total least-squares 3 essays
- Translation 1 essay
- Translation invariance 1 essay
- Transmission of a method 1 essay
- Transversal 22 essays
- Tread 2 essays
- Triangulation 29 essays
- Trimetric 3 essays
- True length 6 essays
- True scale 5 essays
- True shape 1 essay
- two-point construction 4 essays
- two-point perspective 1 essay
- Umbra 11 essays
- Unrolling 1 essay
- Vanishing line 17 essays
- Vanishing point 95 essays
- Vergence 8 essays
- vertical vanishing point 10 essays
- View camera 1 essay
- View frustum 9 essays
- Viewing distance 40 essays
- Viewing position 25 essays
- Viewing tolerance 5 essays
- Vignetting 3 essays
- Virtual image 12 essays
- Visual hull 5 essays
- Volume anamorphosis 2 essays