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

instrument limit — where it appears

2 essays name this object, across 2 fields. What follows is each of them, and the objects they name alongside it.
123-2-10baseline (m, log scale)range past which 1 px of disparity error is unbounded (m, log scale)65 mm → 58.5 mrange = fB/δ — 58.5 m at a 65 mm baseline900 px focal length, 1 px reading

The range a pair cannot see past

A stereo rig has a distance beyond which it cannot say "no further than", and the distance is fixed before anything is built. It is the focal length times the baseline divided by the reading precision, and for a human pair of eyes it is fifty-eight and a half metres.

depth · disparity a centretrue measurediminutionbounded depthstraight linesperspectivehandscrollisometricdimetrictrimetriccavaliercabinetelevationfilled means the system keeps itmeasured from each system's own projectionno row is filled in both of the first two

Each system answers its own question

A comparison in which every system wins its own column proves nothing if the columns were chosen after the systems. The test that makes it a result is whether any system wins something it was not designed for — and two of them do.

choices · exclusion

Named alongside it

The objects these essays reach for when they reach for this one.

Axis scaleBaselineConformalCross ratio testDemonstrationDepth uncertaintyDisparityDrawing systemFocal lengthFree parameternecessary, not sufficientOrthographic limit

All concepts