Crucible Year Peter Yuill
Archive · full record

T_154

The work as shown. Every value below comes from vae.db, the master database of the Crucible Year.

Recorded

Date
2026.03.27, day 89
Size
70 × 180 cm
Paper
S3, Tanxi Jing Pi, raw
Inks
MB1, MB2, MB3
Phase
P1 Warm-up
Shown on the site
yes (V23 rating of 5.0 or higher)
Early storage triage
SA: save, archive (Peter's early system, since retired)

Measured · V23 (v23.8)

V23 rating
5.5
Form
2
Tonal depth
2
Layering
2
Composition
2
Material and surface
1.6
Ink cover
63%
Dark share
39%
Tonal steps
3
Flaws named by the reads
tide line 2, bloom 5, other 5, dead ink 1
The V23 rating runs from 1 to 9, with 5 the middle of this body of work. It is the engine's reading, and the reference the archive is measured against.

Older engine

V7
8
From an earlier engine (V7). Its scale differs from V23's, so it is only ever compared with other readings by the same engine.

How the number was made

Read by the Visual Analysis Engine, version 23.8, on 2026.10.06: measured by code, then read 5 times by Claude Opus 5.5 against three reference paintings (R1 to R3), each read independent of the others. How the engine works.

WHAT THE CODE SEES

Three views of one sheet.

Left, the photograph. Centre, the tone stretch the model is shown beside it: the darkest 45% of tones spread over the whole range, so flat black, banding and stains show. Right, every pixel as the measuring code classes it: cyan black ink, deep teal translucent grey, stone the palest ink, near black bare paper.

T_154T_154, tone-stretchedT_154, classed by brightness
63%of the sheet carries ink
Black 39%Grey 39%Light 22% SHARE OF THE INK, NOT OF THE SHEET
TONAL STEPS

3 families of tone.

Every inked pixel's brightness in 64 bins, smoothed; each circled peak holds at least 4% of the ink. Life inside the black: 0.052 (under 0.045 reads as flat).

0.300.75123 BLACK INK TRANSLUCENT GREYS PALEST INK, 0.88 LUMINANCE OF EVERY INKED PIXEL, 64 BINS. PAPER (ABOVE 0.88) IS LEFT OUT.
FIVE READS

Five reads, agreeing on 4 of 5 qualities.

Each quality placed on its ladder by each read, and the mean the engine keeps. Where reads differ, they differ by one rung; close calls resolve down.

READ 1READ 2READ 3READ 4READ 5MEAN
Form2BUILT2BUILT2BUILT2BUILT2BUILT2.0
Tonal depth2MODELLED2MODELLED2MODELLED2MODELLED2MODELLED2.0
Layering2LEGIBLE2LEGIBLE2LEGIBLE2LEGIBLE2LEGIBLE2.0
Composition2WORKING2WORKING2WORKING2WORKING2WORKING2.0
Material and surface1FLAWED1FLAWED2SOUND2SOUND2SOUND1.6

READ 1, IN ITS OWN WORDS

“Valley composition with masses rising from both corners around an open, spattered centre. Right arc strokes are fluent, but the bottom blacks are heavy and flat, and mottled tide blotches mark the left grey strokes.”

Form · BUILT

Right arc strokes follow brush travel; left diagonal grey strokes hold; bottom dark masses are heavy, lumpy slabs with blobby dabbed edges at left-centre.

WEAKEST Bulky dark slab along bottom centre-right

STRONGEST Sweeping curved strokes rising at right

Tonal depth · MODELLED

Grey strokes show streaks and graded density; bottom dark masses mostly uniform black; modulation 0.052 only just above flat; three tonal steps.

WEAKEST Bottom right dark mass nearly flat inside

STRONGEST Left diagonal grey strokes with streaked grain

Layering · LEGIBLE

Pale grey washes, mid-grey strokes and black passes read separately at left and right; at the bottom the black largely buries what lies beneath.

WEAKEST Bottom blacks cover earlier greys

STRONGEST Pale grey washes under dark strokes left

Composition · WORKING

Two masses rise from the corners into a U-shaped arc around shaped empty paper, with spatter leading inward; the bottom edge is congested and heavy.

WEAKEST Heavy, crowded bottom band

STRONGEST Valley arc framing open central sky

Material and surface · FLAWED

Top-left grey stroke and left dark dabs show blotchy rings and tide edges visible in colour view; there is also a gold object at the bottom-right edge.

WEAKEST Mottled tide-ringed grey stroke top-left

STRONGEST Dry-brush streaks in right arc strokes

FLAWS

4 distinct places, 0 major.

Each read must name every flaw and where it is, in a ninth of the sheet. Here the reads named flaws in 4 distinct places, 13 mentions in all across 5 reads; the number in each ninth is how many times a flaw was named there. Reads agreeing on a place strengthen the evidence for one flaw; they do not multiply it.

1 × TIDE LINE“mottled pale rims inside upper-left diagonal …”5 × TIDE LINE, BLOOM“mottled rings inside diagonal grey stroke at …”1 × BLOOM“blotchy dabbed dark patches left of centre”6 × OTHER, DEAD INK“gold object intruding at bottom right edge”BLOOMTIDE LINEDEAD INKOTHER
GEOMETRY

Measured from the 16-bit master.

The previous engine (V22) measured this sheet's master file: 2 principal ink masses traced (cyan), 7 enclosed voids at true size in their grid cells (amber), the main gesture from start to end (red). Of 15 edge segments, 53% crisp, 33% soft or bloomed, 13% broken.

A1B1C1D1E1F1A2B2C2D2E2F2A3B3C3D3E3F3H1H2H3H4H5H6H7
RULE 1Two tonal steps or fewer

Tonal depth held at rung 1.

3 steps: not applied
RULE 2A major flaw

Material held at rung 1. Mild waves in the unmounted paper are never a flaw.

none named
RULE 3Any quality below 0.5

The rating cannot exceed 4.

lowest 1.6
RULE 4At least two valid reads

A read that breaks the reply format is discarded.

5 of 5 valid
THE ARITHMETIC

V23 rating 5.5.

Engine v23.8, 5 reads. Fixed arithmetic, the same for every painting; the constants were set on 24 randomly chosen paintings so the median sheet scores 5. The scale is relative to this archive, not to painting in general, and a difference of less than half a point between two paintings is noise.

MEAN RUNG1.92(2.0 + 2.0 + 2.0 + 2.0 + 1.6) ÷ 5
→
RAW4.841 + 2 × 1.92
→
RATING5.55 + 2.086 × (4.84 − 4.60)