Vision & Robotics: Local AI That Sees and Movesbeginner · ~120 min

Measure It From a Photo — A Printed Mat That Turns Your Own Camera Into a Caliper

You are holding a broken plastic bracket, a mystery washer, or a gasket with no part number on it, and the replacement you order has to fit within a millimetre — so why is your only option still squinting at a tape measure and guessing?

This project builds the honest version of measuring from a photo — a printed sheet that gives your camera a real scale, a program that flattens out your shooting angle, and — the part almost every tutorial leaves out — a self-check that tells you when the numbers are wrong instead of letting you order the wrong part twice.

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What you'll do

A folder of small Python programs on your own machine, written by Claude Code, that print a measuring mat at true scale, verify the print actually came out at true scale, take any photo of that mat with a small object on it, undo the camera's angle to produce a top-down image where ten pixels equal one millimetre, and report the object's width, height, and area in millimetres — either by clicking two points or by finding the outline automatically — together with a written tolerance you measured yourself rather than one the tutorial promised you.