Fig. 4

Simulating visual perception neuron image recognition with VTSM mode. a The process diagram of images being converted into Poisson encoding and then transmitted as a sequence of pulses to the brain. b Poisson encoding for different pixel values encoding frequency and time scale relationship. In image recognition, the image needs to be accumulated on time step scale. The pulse train is represented on a time scale by number steps. c PRM device response at 0.1 kHz, 1 kHz, and 100 kHz light pulses. d The relationship between HRS and LRS resistance values of PRM devices and different optical frequencies. e Poisson encodes the cumulative display of image information at different number steps