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CASE STUDY 03 / API & COMPUTER VISION

Card Scanner API

Exploring how a stack of card photographs can become organized, reviewable records while preserving image quality and acknowledging uncertain identification.

In development · No public production API or working public demo claimed
Card Scanner APIIn-development computer vision and identification workflow · No public production release
FUNCTIONAL SCOPE

What the product is designed to do.

Image intake and rotation

Accept photographs, identify orientation and preserve the untouched original alongside proposed processing results.

Multiple-card detection

Identify individual card boundaries even when several cards share a photo or appear at different angles.

Front/back image pairing

Associate matching images so card number and set information from the back can support recognition.

Structured identification

Propose player or character, year, product, set, number and parallel with confidence checks.

Review-before-save

Present cropped images and editable metadata, including an explicit unknown state when evidence is insufficient.

ENGINEERING APPROACH

The workflow behind the interface.

01

Detect

Find cards and correct orientation before extracting individual image areas.

02

Pair

Link front and back photos where there is enough supporting evidence.

03

Identify

Extract and compare metadata using suitable catalogs or allowed reference providers.

04

Review

Let a person inspect, edit or reject the proposed result before it is saved.

REAL LESSONS

What the hard cases taught me.

A perfect-looking crop can be wrong

Card edges, corners and rotated photographs matter to collectors. The original image must remain accessible so a proposed crop can be corrected.

Repeated guesses are not independent results

A batch processor should track each detected card separately and reject reused AI output that cannot be matched to the image.

Pricing claims need matching sales

A listing price is not a verified sold price, and an approximate card identity is not an exact match. The workflow should preserve that distinction.

Current status: The scanner remains in development. There is no claim of an available public API, guaranteed recognition accuracy, verified market-pricing coverage or a published developer SDK.

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