Spike 1: lighting split & parts — 5 photos

A = new shade × shading layer (stains removed). C = baseline that keeps the photo's brightness (stains kept). Shades are generic test colours, not brand data. Click any image for full size.

wikimedia_40257988 — Mysore: weathered, balustrades, cornices, car

Photo today
Old surface colour (stains go here; thrown away)
Shading layer (kept: sun, shadows, relief)
A: shade × shading — light blue
C baseline: keep photo brightness — light blue
A — terracotta
C baseline — terracotta
What the system thinks can be painted (pink)
SAM 2 regions (dark = no region found)

wikimedia_18144473 — Kerala: tiled roofs, person and scooter, plaster patches

Photo today
Old surface colour (stains go here; thrown away)
Shading layer (kept: sun, shadows, relief)
A: shade × shading — light blue
C baseline: keep photo brightness — light blue
A — terracotta
C baseline — terracotta
What the system thinks can be painted (pink)
SAM 2 regions (dark = no region found)

wikimedia_60723207 — Gujarat: all white, external stairs, parapets, railings

Photo today
Old surface colour (stains go here; thrown away)
Shading layer (kept: sun, shadows, relief)
A: shade × shading — light blue
C baseline: keep photo brightness — light blue
A — terracotta
C baseline — terracotta
What the system thinks can be painted (pink)
SAM 2 regions (dark = no region found)

wikimedia_7069091 — Murud: front view, pillars, parapet blocks

Photo today
Old surface colour (stains go here; thrown away)
Shading layer (kept: sun, shadows, relief)
A: shade × shading — light blue
C baseline: keep photo brightness — light blue
A — terracotta
C baseline — terracotta
What the system thinks can be painted (pink)
SAM 2 regions (dark = no region found)

wikimedia_7846452 — Puducherry: coloured bands, balcony railings, gate, compound wall

Photo today
Old surface colour (stains go here; thrown away)
Shading layer (kept: sun, shadows, relief)
A: shade × shading — light blue
C baseline: keep photo brightness — light blue
A — terracotta
C baseline — terracotta
What the system thinks can be painted (pink)
SAM 2 regions (dark = no region found)