GHOST CASE

BACK TO BINDER ◨ SETS ◍ COMMUNITY ⇌ TRADES ✉ MESSAGES

PRE-GRADE · BETA

1GEOMETRY—

DETECTING EDGES…

EDGE MAPS · YOUR BLUE VS MASTER

2RELIEF—

GRADE THE CARD
TO BUILD THE RELIEF

SURFACE TOPOGRAPHY · MASTER VS YOURS

3AI VISION—

CLAUDE READS YOUR CARD
AGAINST THE MASTER

AI VISION · DEFECTS IT CAN NAME

AI PRE-GRADE · PSA SCALE

MASTER CARD2.50 × 3.50 in

YOUR CARD—

—

PRE-GRADE · SAME FOUR POINTS EVERY COMPANY SCORES · NOT A GRADE, NOT A GUARANTEE · CONFIRM IN HAND BEFORE YOU SUBMIT

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Drop image or video here

VALUABLE CARD? A 3-SECOND SLOW TILT VIDEO GIVES THE MOST ACCURATE GRADE

JPG · PNG · WEBP · GIF · SVG · MP4 · MOV

MAX 20MB · VIDEO 60MB

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Drop the BACK here

NEEDED FOR A FULL GRADE · PSA 75/25 BACK CENTERING · BACK CORNERS & EDGES

A REAL EBAY PHOTO OF THIS CARD IS THE SAMPLE. DROP OR CLICK TO REPLACE.

Reference Card

CHARIZARD EX

#006 · POKÉMON 151 · SV3PT5

BASELINEGEM MINT · 10

THE MASTER IS THE PUBLISHER'S DIGITAL FILE — PERFECTLY CENTERED, ZERO WEAR. IT IS THE 10 YOUR CARD IS MEASURED AGAINST, AND BOTH RUN THROUGH THE EXACT SAME DETECTION.

The Three Tools

The Methods

Edge Detection

FULL CANNY PIPELINE — GAUSSIAN → SOBEL → NON-MAX SUPPRESSION → HYSTERESIS. SAME SETTINGS APPLIED TO BOTH CARDS.

SENSITIVITYAUTO

DETAIL FLOOR40%

PHOTO VISIBILITY100%

Surface Relief

SHADING BECOMES A NORMAL FIELD — THE 3D THAT ISN'T 3D. YOUR CARD'S TEXTURE IS COMPARED TO THE MASTER'S, TILE BY TILE. BLUE = OFF, RED = STRONGLY OFF. FLAT COLOUR AREAS ARE SKIPPED, NOT BLAMED.

SURFACE—

EDGES—

CORNERS—

CONFIDENCE—

TILES READ—

AI Vision

CLAUDE SEES BOTH CARDS — YOURS AND THE MASTER — AND GRADES THE SAME FIVE THINGS. IT RETURNS NULL RATHER THAN GUESS, SO A DIMENSION IT CAN'T SEE NEVER VOTES.

CENTERING—

IMAGE—

CORNERS—

EDGES—

SURFACE—

CONFIDENCENOT RUN

Your Card Fit

AUTO-FIT snaps your card to the white master frame. Or position it yourself: DRAG to move · ARROW KEYS to nudge (SHIFT = bigger) · DRAG A CORNER or SCROLL to resize · DRAG THE ⟳ HANDLE to rotate. Match your blue outline to the white.

Layers

Inspect

HOVER THE CARD — A LOUPE MAGNIFIES WHERE YOUR BLUE SITS OFF THE WHITE.

Readout

REFERENCE EDGES—

YOUR CARD EDGES—

THRESHOLDS—

RESOLUTION—

LINE UP THE BLUE ON THE WHITE. TIGHT MATCH ON ALL FOUR BORDERS = THE CENTERING OF A 10.