Three nodes for 2-D DCT frequency-domain filtering:
- DCT2D: IMAGE → DCT_SPECTRUM + log-scale spectrum preview
- DCTMask: interactive paint-canvas mask editor on the spectrum
- IDCT2D: DCT_SPECTRUM → reconstructed IMAGE
The mask editor embeds a LiteGraph canvas widget that lets users
paint black (remove) or white (restore) frequency regions directly
inside the ComfyUI graph.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
