Figure 2. Effects of Noise on Fidelity and Controllability. Based on pretrained Qwen-Image, (a) shows the denoising results of ground-
truth (GT) under the same prompt and different levels of noise. (b) adopts low noise level and different prompts (with Chinese annotation).
(c) studies the effects of noise on LQ with the same prompt. High-noise inputs improve perceptual quality and controllability but reduce
fidelity, whereas low-noise inputs preserve original details yet fail to deliver enhanced super-resolution effects.