CMOS compressed imaging by Random Convolution

We present a CMOS imager with built-in capability to perform Compressed Sensing coding by Random Convolution. It is achieved by a shift register set in a pseudo-random configuration. It acts as a convolutive filter on the imager focal plane, the current issued from each CMOS pixel undergoing a pseudo-random redirection controlled by each component of the filter sequence. A pseudo-random triggering of the ADC reading is finally applied to complete the acquisition model. The feasibility of the imager and its robustness under noise and non-linearities have been confirmed by computer simulations, as well as the reconstruction tools supporting the Compressed Sensing theory.

• Type: Conference
• Year: 2009
• Where: ICASSP
• Authors: Laurent Jacques, Pierre Vandergheynst, Alexandre Bibet, Vahid Majidzadeh, Alexandre Schmid, Yusuf Leblebici
• Keywords: CMOS Imager, Compressed Sensing, ICASSP 2009, Pseudo-random, Signal Processing