Fig. 5: Feature images with reconfigurable kernels.
From: Compact optical convolution processing unit based on multimode interference
a The input handwritten digit images of “9”, “6”, “0”, “5”, and “4”. b Feature maps with the digital computer. c Feature maps with the OCPU chip. The numbers marked on each picture are the root mean square error (RMSE) between feature maps obtained with the computer and the OCPU.
