How do computers see fruit?

Rigor through intuition, not rigor through proof.

A 3-lesson adventure. Learn how a phone recognizes apples, oranges, and bananas using simple math, a pencil, and a browser.

3 lessons. Zero installs.

Pixels Are Just Numbers

Draw an apple on a grid. Then see it stored as [255, 0, 0].

Finding the Edge of a Fruit

Slide a 3x3 math window. Where numbers jump, that is an edge.

Apple or Orange?

Score redness, roundness, and stems. Highest score wins.

Pencil → Code → SciML App. No blocks.

See linear algebra, matrices, and calculus work together on house prices, cancer flags, fraud, credit, and self-driving.

Five medical AI companies and the exact math (convolution, U-Net, PINNs) linked to these lessons.

More lessons coming: neural nets, training your own classifier, and a real fruit recognition app.