Abastract This paper mainly focused on solving the problem of image-translation with unpaired images. Image-to-image translation is a class of vision and graphics problems where the goal is to learn to the mapping between an input image and an output image using a training set of aligned image pairs. However, obtaining large amount of paired images could be quite expensive. The author proposed learn a translation from source domain \(X\) to target domain \(Y\) in the absence of paired images. The goal is to learn a map \(G:X\rightarrow Y\), such that the distribution of \(G(X)\) is indistinguishable from \(Y\) using an adversarial loss. The author coupled it with reverse mapping \(F:Y\rightarrow X\) and cycle-consistency loss \(F(G(X))\approx X\) Fig.1: Given any two unordered image collections \(X\) and \(Y\), the algorithm could automatically "translate" an image from one into the other and vice versa: (left) 1074 Monet paintings and 6753 landscape photos fro...