MTGScan uses OCR recognition to list Magic cards from an image.
After OCR, cards are looked up in a dictionnary provided by MTGJSON, using fuzzy search with SymSpell.

  flowchart LR;
  subgraph "Browser"
    C1[Client];
    C2[Client];
    C3[Client];
  end
  subgraph "Frontend"
    F((Flask Server));
  end
  subgraph "Backend"
    W1[Celery Worker<br>using mtgscan];
    W2[Celery Worker<br>using mtgscan];
  end
  subgraph "Cloud"
    A[Azure Read OCR];
  end
  C1 <-->|Socket.IO| F;
  C2 <-->|Socket.IO| F;
  C3 <-->|Socket.IO| F;
  F <-->|RedisMQ| W1;
  F <-->|RedisMQ| W2;
  W1 <-->|API| A;
  W2 <-->|API| A;

Repository for the web app

• Python >= 3.7
• (Recommended) Poetry
• Credentials for the required OCR (e.g Azure Computer Vision Read API)

poetry install

pip install mtgscan

See https://github.com/fortierq/mtgscan-app

Currently, only Azure OCR is supported. To add an OCR, inherit mtgscan.ocr.OCR.

API subscription key and endpoint must be stored in environment variables AZURE_VISION_KEY and AZURE_VISION_ENDPOINT respectively.
Steps:

• Subscribre for a free Azure account: https://azure.microsoft.com/free/cognitive-services
• Create a Computer Vision resource: https://portal.azure.com/#create/Microsoft.CognitiveServicesComputerVision
• Get your key and endpoint

Every test case is stored in a separated folder in tests/samples/ containing:

• image.*: image of Magic cards
• deck.txt: decklist of the cards on the image

To run every test:

poetry run python tests/test.py

This produces the following outputs, for each sample and OCR:

• statistics about number of cards found, number of errors...
• test.log: informations about the run
• errors.txt: history of the number of errors made by the OCR
• box_texts.txt: output of the OCR

This example scans the following screenshot:

$ poetry run python example.py

Loading https://mtgjson.com/api/v5/VintageAtomic.json
Loaded all_cards.txt: 23253 cards
Loading https://mtgjson.com/api/v5/Keywords.json
Loaded Keywords.json: 282 keywords
4 Ancient Tomb
4 Mishra's Factory
4 Mishra's Workshop
1 Strip Mine
1 Tolarian Academy
4 Wasteland
1 Sacrifice
1 Mox Ruby
1 Mox Emerald
1 Mox Jet
1 Mox Pearl
1 Mox Sapphire
1 Black Lotus
1 Mana Crypt
1 Sol Ring
4 Phyrexian Revoker
4 Arcbound Ravager
1 Thorn of Amethyst
4 Sphere of Resistance
4 Foundry Inspector
3 Chief of the Foundry
1 Trinisphere
1 Lodestone Golem
1 Mystic Forge
2 Fleetwheel Cruiser
1 Traxos, Scourge of Kroog
4 Walking Ballista
3 Stonecoil Serpent
1 Chalice of the Void

3 Mindbreak Trap
4 Leyline of the Void
2 Crucible of Worlds
4 Pithing Needle
2 Wurmcoil Engine