When SIANA Systems set out to build a smart doorbell with real-time presence detection on the STM32N6, they faced a problem that every embedded vision team eventually runs into: the default ISP configuration was good — but not good enough. The images coming off the VD1943 sensor had a visible green colour cast, poor white balance across lighting conditions, and a colour accuracy error (ΔE) of 15.735 — well above the threshold where colours look visually off. More critically f

This article is co-written by Johannes Brücker & Ajay Basarur (Emmetra) Johannes Bruecker Principal Business Development Engineer at Renesas Renesas MPUs from the RZ family are high-performance solutions tailored for a wide range of applications, from 2D/3D graphics and real-time control to industrial automation and Vision AI. The RZ/V series, featuring embedded AI acceleration, is purpose-built for Vision AI and supports diverse use cases such as smart cameras, drones