Mask Authority Audit — yellow_white_rose_floral_01

Pixel-level scan of the uploaded mask PNG. No constants used to find boundaries.

PRIMARY QUESTION ANSWER

✗ y=949 does NOT match the mask. Mask says pdfY=798 (delta=151px)

The hardcoded constant does NOT agree with the mask. The mask gives a different bottom boundary. See full trace below.

Mask Pixel Scan — Direct Measurements

Mask PNG (raw pixels)

Mask dimensions759 × 1024 px

White region top row232

White region bottom row757

White region left col165

White region right col585

Top %22.656%

Bottom %73.926%

Left %21.739%

Width %55.336%

Scaled to PDF Canvas

Background W1200 px (source)

Background H1620 px (source)

PDF scale800 / 1200 = 0.666667

PDF canvas W800

PDF canvas H1080

Mask → PDF scaleX1.054018

Mask → PDF scaleH1.054688

pdfTopY (from mask)245

pdfBottomY (from mask)798

pdfLeftX (from mask)174

pdfWidth (from mask)443

Parity Check vs Hardcoded Constants

✗ topY=210

mask→pdf: 245

constant: 210

Δ 35px

✗ bottomY=949

mask→pdf: 798

constant: 949

Δ 151px

✗ zoneX=151

mask→pdf: 174

constant: 151

Δ 23px

✓ zoneWidth=436

mask→pdf: 443

constant: 436

Δ 7px

Conversion Formula (step by step)

bg source: 1200 × 1620 px

PDF scale = 800 / 1200 = 0.666667

PDF canvas H = round(1620 × 0.666667) = 1080

mask scaleH = 1080 / 1024 = 1.054688

pdfBottomY = round(757 × 1.054688) = 798

hardcoded: canvasH - 131 = 1080 - 131 = 949

delta = |798 - 949| = 151 px

Raw Mask PNG — boundaries marked

Blue = top row 232 · Green = bottom row 757

Proof: Mask Boundaries on Background (PDF canvas scale)

■ Blue = mask top (pdfY=245)

■ Green = mask bottom (pdfY=798)

— Red dashed = hardcoded constant y=949