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Victor Kuznetsov
d7e4fe8835
Two quality knobs for the SDXL invisible pass: - min_resolution floor (default 1024, --min-resolution): small inputs are upscaled to a 1024px long-side floor before diffusion, since SDXL img2img distorts on a tiny latent (a 381x512 portrait wrecks at native). The output is restored to the original input size, so it is a transparent quality boost; it adds time/memory on small inputs. 0 disables. Extends the pure _target_size helper (now cap-or-floor-or-native, min skipped on a min>max misconfig), unit-tested without a model. - unsharp post-filter (humanizer.unsharp_mask, --unsharp, opt-in default 0): applied LAST, after the GFPGAN face pass (a pre-GFPGAN sharpen would be smoothed back over), to counter the soft/over-smoothed look that diffusion + restoration leave behind (an AI tell). Pairs with --humanize (grain). Both threaded through invisible/all/batch + the module-level helper. Verified end-to-end on a 381x512 portrait: upscaled to 1024, sharpened, restored to 381x512. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>