Visual Plane
every picture states the point it is correct from
Depth

Series

A field says what an essay is about. A series follows one idea essay by essay — from the question that introduces it to the one that assumes all the others.
eye, 74° offgrey: the word before the projectionblack: the same word, projected

Anamorph

  1. 3 Anamorphosis is only a viewpoint
  2. 4 An anamorph at true size, on paper
  3. 5 The cylindrical mirror unbends it
  4. 6 The anamorph that crosses a corner
  5. 7 A stair does not use all its faces
  6. +3 more
8 essays · viewing they meet at y = 924, off the pagefar edge ÷ near edge = 1.32a one-point construction, swept through its splaythe point is below the near edge

Divergence

  1. 1 The picture whose lines spread
  2. 2 An inverse perspective is a leaning plane
  3. 3 Four surfaces, and no one camera that draws them
  4. 4 A camera count needs a tolerance
  5. 5 One camera means one horizon, not one point
  6. +3 more
8 essays · choices the eye's trackthe eye at x = -10.5 mevery point is drawn by the one position of the eye that is level with itplan — the eye's track and the scans it makes28 m of travel

Pushbroom

  1. 1 A scroll is a camera that moves
  2. 2 A straight line in a scroll is a hyperbola
  3. 3 The centre a scroll does not have
  4. 4 A map along, and a picture across
  5. 5 A pond in a scroll is not an ellipse
  6. +3 more
8 essays · scroll a centretrue measurediminutionbounded depthstraight linesperspectivehandscrollisometricdimetrictrimetriccavaliercabinetelevationmilitaryfilled means the system keeps itmeasured from each system's own projectionno row is filled in both of the first two

Exclusion

  1. 1 A centre and a measure are exclusive
  2. 2 Each system answers its own question
  3. 3 What perspective gave up
  4. 4 A yes in the table is a price
  5. 5 A page is bounded by a divide, not a centre
  6. +2 more
7 essays · choices principal pointk₁ = -0.320, k₂ = 0.110 — barrel distortioncentre line 0e+0 px of sag, outermost 17.8 px

Distortion

  1. 1 Straight lines that are not
  2. 2 A lens destroys the invariant
  3. 3 The render is distorted on purpose
  4. 4 A barrel model folds at a radius it sets itself
  5. 5 A tilted sensor is not a distortion
  6. +1 more
6 essays · lens 8–26 meye at 1.6 m26–70 meye at 4.0 m70–200 meye at 11.0 mthree stations, buttedfar band ×6.9

Threedistances

  1. 1 Three distances in one landscape
  2. 2 A landscape that changes its rule halfway up
  3. 3 The stations are also a staircase
  4. 4 A seam breaks direction, not size
  5. 5 A shadow decides which landscape it is
  6. +1 more
6 essays · scroll a point at 1.5 mthe pupilthe sensorwhere it focusesf/2.8, focused at 3 m5.8 px across

Aperture

  1. 1 The centre has an area
  2. 2 The sharp band is a decision
  3. 3 A pupil sees around an edge
  4. 4 The corner sees an ellipse
  5. 5 The disc and the streak
5 essays · sensor 025507510010203040true depth (m)depth reported from the disparity, with a 1 px reading error5.86–7.33 m13.96–26.69 m23.76–126.49 mat 40 m: +86.5 m against −16.2 munbounded past 58.5 m

Disparity

  1. 1 Depth is a reciprocal
  2. 2 The range a pair cannot see past
  3. 3 Whole pixels cut space into shells
  4. 4 Vergence moves the shells and does not respace them
  5. 5 The second disparity cuts cells
5 essays · depth the shadow lines meet below the horizon — a lamp in the roomhorizoncorrect from 25 cm, at 160 mm wide3 posts · foot 351 px below the horizon

Lightrecovery

  1. 4 The lamp, out of the picture
  2. 5 A light far enough away
  3. 6 The lamp comes out in rays and not in plan
  4. 7 The drawing does not run out of lines
  5. 8 A lamp behind the camera
5 essays · light the lenscorrect from 14 cm, at 160 mm wide12 pairs · 2.8e-13 px

Mirrorpair

  1. 1 One shutter, two views
  2. 2 Two matches are enough
  3. 3 Square to the camera is the worst mirror
  4. 4 Two mirrors are three cameras
  5. 5 A symmetric object is its own stereo pair
5 essays · mirrors water, n = 1.333eyetruly 1.50 m downappears 0.818 m downh/n would be 1.125 mno single viewpoint — the rays miss by 17.1° of bend at the surfaceapparent depth 54.5% of the true one, not 75.0%

Refraction

  1. 1 What a ray does at a surface
  2. 2 A point under water has two depths
  3. 3 A straight stick in water is a kink and a curve
  4. 4 The stick a stereo pair puts back
  5. 5 The residual does not warn
5 essays · refraction the picture, 160 mm wide22 cm40°the eyefocal length 948 px22 cm at 160 mm wide

Station

  1. 2 The point you have to stand at
  2. 3 Brunelleschi drilled a hole in his panel
  3. 3 Standing in the wrong place
  4. 4 The screen sets the distance
  5. 5 Both vanishing points on the paper
5 essays · viewing 010203040-2502550disparity on the screen — millimetreswhere the point is depicted — metres from the eyesd = 63 mm — the eyes' separationon the glassscreen at 2.0 m · eyes 63 mm apartthe ceiling is the head, and it does not move when the screen does

Stereodisplay

  1. 1 Two pictures on one screen
  2. 2 Turning the cameras inwards
  3. 3 What the two eyes are sent
  4. 4 The distance at which the eyes part
  5. 5 A stereo picture is drawn for a level head
5 essays · screen floorpicture planeeye level — no mark above thiseye · 1.62 m up, 2.40 m backthe ground line, seen from abovethe mark runs to 3.00 ma point 1.62 m up casts no mark at all

Anamorphmap

  1. 3 A floor anamorph is three numbers
  2. 4 The design that outruns the floor
  3. 5 A design that lands in two rooms
  4. 6 The stretch decides the band
4 essays · viewing ground line — right from anywherefaint: intended · solid: seendeparture (mm) against height (m)01.38the error map is an elation, with the ground line as its axisno characteristic ratio — nothing off the axis is fixed250 mm sidewayszero on the axis, 212.5 mm at the top

Anamorphreach

  1. 4 Where the anamorph still works
  2. 4 A flight that has ends
  3. 5 The room the eye may stand in
  4. 6 The eye that reaches the most
4 essays · viewing the distance pointAlberti's sectionthe measuring pointcorrect from 12 cm at 160 mm widethree routes, 0e+0 px apart

Attribution

  1. 1 Three procedures, one panel
  2. 2 Four marks before anything is said
  3. 3 The slip that leaves no trace
  4. 4 What a panel says about its maker
4 essays · construction view 1view 6the scene, in plan — recovered points and cameras over the true onesreprojection 0.332 px · track 2.0e-3264 observations, 168 parameters

Bundle

  1. 1 The track and the scene together
  2. 2 Where the adjustment stops
  3. 3 A narrow view keeps a second answer, inside out
  4. 4 A start needs the sign of its depths, not their size
4 essays · manyviews centre of the ellipseimage of the centrecorrect from 22 cm, at 160 mm wideoffset 21.1 px

Conic

  1. 2 The circle whose centre moves
  2. 3 The centre, got back out of the picture
  3. 4 Which way the drawn circle leans
  4. 5 Six tangents and the point nobody drew
4 essays · foundations a flat floor3e-13 mma homology — four points determine ita dished floor5.67 mmnot a homologya ridged floor9.07 mmnot a homologya floor with a step74.95 mmnot a homologyworst error of the predicted pointsexact at the four fitted, on every surface

Curvedreceiver

  1. 4 The floor that is not a plane
  2. 5 A shadow across a second object
  3. 6 The residual has a shape
  4. 7 A floor cannot fake a second lamp
4 essays · light the seatcentre of curvatureR = 1000 mm · seat at 650 mm51.4 px off a homography

Curvedscreen

  1. 2 The screen is a picture surface too
  2. 3 The screen that names the seat
  3. 4 The seats a screen will accept
  4. 5 One picture and three people
4 essays · screen

All essays