“…Generative Adversarial Network (GAN) is firstly introduced in [45] and has been proven successful in image synthesis [16]- [18], and translation [17], [18]. Subsequently, GAN is applied to image restoration and enhancement, e.g., super resolution [19]- [25], deraining [26], deblurring [27], enlighten [32], [33], dehazing [46], [47], image inpainting [48], [49], style transfer [18], [50], image editing [51], [52], medical image enhancement [22], [23], [53], [54], and mobile photo enhancement [55], [56]. Although GAN is widely applied in low-level vision tasks, few works are dedicated to improving the underlying framework of GAN, such as replacing the traditional CNN framework with Transformer.…”