7. Vision Sensors¶

Every page so far has treated the OpenMV Cam as a small microcontroller that happens to have a camera attached. Vision sensors swaps the framing: the camera is the product, and everything else on the board exists to feed pixels out of it into Python.

The csi module is the bridge. A single class (CSI) wraps the long chain of physics and silicon between photons and a buffer. A lens focuses the scene onto a grid of photodiodes that turn photons into charge; an exposure / gain / read-out controller decides how brightly each pixel is reported; an image signal processor (ISP) corrects, debayers, colour-grades, and packs the pixels into a chosen format; and an MCU peripheral catches the resulting stream into RAM, ready for snapshot() to return as an image.Image.

Optics