How a Browser Reads a Photo — OCR Explained Step by Step

Automated excerpt

Nothing in that grid says "letter. " Nothing says "word. " There is no text in a photo of text. Let's climb them with a real example: a phone photo of meeting notes, slightly shadowed on one side, like every photo ever taken in a hurry. On our sample photo it lands on 104: Every pixel darker than the valley becomes pure black; everything brighter becomes pure white.

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