Retina-like imaging system is an imaging system with space-variant resolution similar to the
photoreceptor distribution of primate retina. In this paper, the design and implementation of the
retina-like imaging system based on non-uniform lens array has been introduced. Firstly, the
mathematical model of the non-uniform lens array is deduced. Secondly, the hardware design of the
proposed system is discussed in detail, which includes the photodetectors array, current-voltage
conversion circuit, ratio normalization circuit and A/D converter circuit, etc. Furthermore, the design of
the corresponding software is also discussed. Finally, the corresponding experiments have been carried
out. Our results show that the developed system has the characteristic of rotation and scaling invariance
property, which will help to result in a new retina-like image sensor with the characteristics of high
speed, high resolution, high sensitivity and big planar array, etc.
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