Analog implementation of gamma-correction for CMOS cameras

In this paper an analog synthesizer of nonlinear functions is applied to integrated color processing in CMOS cameras. For reproducing images on a display with desired contrast and color correction, a nonlinear distortion of the signal associated with pixels of different colors is needed. The adoption of a design flow for the implementation of nonlinear analog functions allows the integration of this processing on the same chip containing the sensor before the final A/D conversion.