Light‐to‐Spike Encoding Using Indium‐Gallium‐Zinc Oxide Phototransistor for all‐Color Image Recognition with Dynamic Range and Precision Tunability

pulses changes the baseline level of spike rates. Remarkably, separate RGB channels offer a tunable encoding process, which can emphasize individual colors and correct color bias. The encoded spike rates are also fed into a spiking neural network (SNN) for CIFAR-10 pattern recognition, achieving an accuracy of 86%. The method allows the operation of SNN and shows the tunability in the process of light-to-spike encoding, opening possibilities for color image processing.