DeepDream (image processing software) employs a CNN (convolutional neural network) to re-draw one input image and in the style of a second input image.
Figure 1. Input image of Yoshi, lying down against a fence. Full disclosure: neural networks have in the past classified him as ‘orange cat’.
Figures 2-12. Output images of Yoshi, after being re-drawn in various visual styles by DeepDream.
You can do this yourself here.