| license: apache-2.0 | |
| pipeline_tag: unconditional-image-generation | |
| # Show the Signal, Hide the Noise: Spectral Forcing for Pixel-Space Diffusion | |
| This repository contains the weights for **Spectral Forcing**, a parameter-free, time-conditional low-pass operator that makes the coarse-to-fine structure of diffusion explicit at the input of a pixel-space model. | |
| - **Paper:** [Show the Signal, Hide the Noise: Spectral Forcing for Pixel-Space Diffusion](https://arxiv.org/abs/2606.15236) | |
| - **Github Repository:** [https://github.com/WeichenFan/Spectral_Forcing](https://github.com/WeichenFan/Spectral_Forcing) | |
| ## Introduction | |
| Spectral Forcing (SF) is based on the observation that under rectified-flow diffusion and natural-image power-law spectra, a moving frequency front separates a signal-bearing low-frequency region from a noise-dominated high-frequency region at each timestep. SF imposes this boundary directly via a 2D-DCT mask whose cutoff expands with the diffusion time and becomes the identity at the data endpoint, showing the network the signal and hiding the noise. | |
| ## BibTex | |
| ```bibtex | |
| @misc{fan2026show, | |
| title = {{Show the Signal, Hide the Noise: Spectral Forcing for Pixel-Space Diffusion}}, | |
| author = {Fan, Weichen and Diao, Haiwen and Wu, Penghao and Liu, Ziwei}, | |
| year = {2026}, | |
| eprint = {2606.15236}, | |
| archivePrefix = {arXiv}, | |
| primaryClass = {cs.CV}, | |
| doi = {10.48550/arXiv.2606.15236}, | |
| url = {https://arxiv.org/abs/2606.15236} | |
| } | |
| ``` |