Fig. 3: Operation principle of the neuromorphic imaging device.
a Schematic diagram showing the image acquisition and neuromorphic data pre-processing by using a 3 × 3 pV3D3-PTr array. b Normalized photocurrent measured at each pixel of the 3 × 3 pV3D3-PTr array. c Acquired image at each time point. d Pre-processed image obtained through image acquisition and neuromorphic data pre-processing. e Pre-processed image stored in the array while photocurrents of individual pixels slowly decay. f Erasure of the memorized image by applying a positive gate bias (i.e., Vg = 1 V).
