The system includes a memory that stores instructions for executing processes converting line drawings to rendered images. The system also includes a processor configured to execute the instructions. The instructions cause the processor to: train a neural network to account for irregularities in the line drawings by introducing noise data into training data of the neural network; receive a first line drawing from an input device; generate a first rendered image based on features identified in the first line drawing; and display the first rendered image on an output device.