Imitating the image acquisition and processing of vertebrate retina,a bionic CMOS image sensor,which has the ability of image edge detection by a bionic retina signal processing circuitry on-chip,is designed and implemented.The bionic processing circuit in pixel consists of adaptive photoreceptor,filtering resistive network and subtraction Op-Amp circuit.In bionic CMOS image sensor,the spatial filtering resistive network with simple structure and subtraction Op-Amp circuit are used to simulate the function ...