A wide-spectrum 550-1600 nm, 16k VIS + 8 NIR pixels, high-dynamic range image-sensor for biomedical applications
Capteur d'image à large spectre 550-1660nm, 16000 VIS + 8 NIR pixels à grande dynamique pour applications biomédicales.
Résumé
This paper presents an Application-Specific Integrated Circuit (ASIC) wide-spectrum image sensor and its sensing-module and system. It is made of an integrated visible image sensor, an external NIR-SWIR photodiodes acquisition system and on-chip Analogue to Digital conversion and provides a digital interface to a portable, fully integrated host system based on a raspberry-pi with a dedicated "hat" board. The system is capable of real-time Diffuse Optical Imaging in a wide spectrum with a resolution of 3x16k visible images and 3x8 NIR photodiodes. A signal-to-noise ratio of 66dB in the NIR domain was attained at a total power of 18.4 mW.
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