Author Archive | Adrian Rosebrock

How to Build a Kick-Ass Mobile Document Scanner in Just 5 Minutes

Building a document scanner with OpenCV can be accomplished in just three simple steps: Step 1: Detect edges. Step 2: Use the edges in the image to find the contour (outline) representing the piece of paper being scanned. Step 3: Apply a perspective transform to obtain the top-down view of the document. Really. That’s it. Only three steps […]

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