Unpaired image-to-image translation is a class of vision problems whose goal is to find the mapping between different image domains using unpaired training data. Cycle-consistency loss is a widely used constraint for such problems. However, due to the strict pixel-level constraint, it cannot perform shape changes, remove large objects, or ignore irrelevant texture. In this paper, we propose a novel adversarial-consistency loss for image-to-image translation. This loss does not require the translated image to be translated back to be a specific source image but can encourage the translated images to retain important features of the source images and overcome the drawbacks of cycle-consistency loss noted above. Our method achieves state-of-the-art results on three challenging tasks: glasses removal, male-to-female translation, and selfie-to-anime translation.
Figure 1. Example results of our ACL-GAN and baselines. Our method does not require cycle consistency, so it can bypass unnecessary features. Moreover, with the proposed adversarial-consistency loss, our method can explicitly encourage the generator to maintain the commonalities between the source and target domains.
Figure 2. The comparison of adversarial-consistency loss and cycle-consistency loss. The blue and green rectangles represent image domains S and T, respectively. Any point inside a rectangle represents a specific image in that domain.
Figure 3. Comparison against baselines on glasses removal.
Figure 4. Comparison against baselines on male-to-female translation.
Figure 5. Comparison against baselines on selfie-to-anime translation.
Figure 6. Quantitative Comparisons to Baseline Methods. We show quantitative comparisons between our algorithm and the baseline methods.
This work was supported by the funding for building AI super-computer prototype from Peng Cheng Laboratory (8201701524), start-up research funds from Peking University (7100602564) and the Center on Frontiers of Computing Studies (7100602567). We would also like to thank Imperial Institute of Advanced Technology for GPU supports.