A 450µW@50fps Wake-Up Module Featuring Auto-Bracketed 3-Scale Log-Corrected Pattern Recognition and Motion Detection in a 1.5Mpix 8T Global Shutter Imager

Published: 01 Jan 2024, Last Modified: 12 Nov 2024VLSI Technology and Circuits 2024EveryoneRevisionsBibTeXCC BY-SA 4.0
Abstract: Megapixel imagers with computer vision capabilities exhibit high acquisition performance at the expense of a power consumption preventing always-on usage. This paper presents ATIM, a wake-up solution for both 3-scale pattern recognition and motion detection, that is added to a 1360×1120 Global-Shutter commercial CIS without impairing image quality in standard readout modes. ATIM relies on self-adaptation to ambient light conditions, to improve algorithmic robustness for real-world scenarios. This module captures 9 x 9-downsampled 8b images using a dedicated readout and processes 6b 152×112 frames, under an overall power budget of ~450µW at 50fps.
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