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This paper presents a 128 times 128 charge-mode CMOS imaging sensor that computes separable transforms directly on the focal plane. The pixel is a unique extension of the widely reported active pixel sensor (APS) cell. By capacitively coupling across an array of such cells onto switched capacitor circuits, computation of any unitary 2-D transform that is separable into inner and outer products is...
This paper presents an alternative to a logarithmic response CMOS imager that utilizes an in-pixel, time-based compressive map for capturing scenes with wide dynamic range. The imager employs a correlated double sampling technique that significantly reduces the effects of parasitic capacitance and mismatch in active-pixel circuits. An on-line adaptation technique that adjusts the parameter of the...
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