A CMOS Image Sensor With Programmable Pixel-Level Analog Processing  

Oleh:

Massari, N. ; Gottardi, M. ; Gonzo, L. ; Stoppa, D. ; Simoni, A.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: IEEE Transactions on Neural Networks vol. 16 no. 6 (Nov. 2005), page 1673-1684.
Topik: Programmable; CMOS; image sensor; programmable; pixel - level; analog processing

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: II36 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

A prototype of a 34 × 34 pixel image sensor, implementing real - time analog image processing, is presented. Edge detection, motion detection, image amplification, and dynamic - range boosting are executed at pixel level by means of a highly interconnected pixel architecture based on the absolute value of the difference among neighbor pixels. The analog operations are performed over a kernel of 3 × 3 pixels. The square pixel, consisting of 30 transistors, has a pitch of 35 µm with a fill - factor of 20 %. The chip was fabricated in a 0.35 µm CMOS technology, and its power consumption is 6 mW with 3.3 V power supply. The device was fully characterized and achieves a dynamic range of 50 dB with a light power density of 150 nW / mm2 and a frame rate of 30 frame / s. The measured fixed pattern noise corresponds to 1.1 % of the saturation level. The sensor's dynamic range can be extended up to 96 dB using the double - sampling technique.

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