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Studio Hero HPO fixture

This directory is the real, model-generated four-seed study shown in the English Studio Hero screenshot and bundled as the v0.3 Guided Sample. Pocket Kingdom remains a separate documentation-only canonical lineage example.

The selected first direction uses the recorded 2023 seed 6764547109648557242 with the pinned sdxl-canny-lite@1 preset. The other three values are the two alternatives preserved in the same notebook cell and one explicit adjacent value. No random seed appears in this fixture.

Search and selection

The July 2026 Hero search generated 12 new images in four bounded rounds:

  1. four fixed-seed material directions;
  2. three fixed-seed prompt repairs;
  3. two fixed-seed ControlNet strengths with a minimal prompt; and
  4. three additional preserved-seed runs around the best material direction.

Every round used the same reviewed source, pinned local model revisions, Canny 140/160, UniPC, and no downloads. The selected material direction was then compared with the previous Hero incumbent and the verified 2023 output.

Technical scores were used only to remove obvious failures. The visual gates were: a strong central read at thumbnail size; survival of the main left, center, and right landmarks; dimensional material depth; a clean crop; and no empty center, pseudo-text, malformed face, or dominant background pattern. The historical seed won the final seed sweep. Alternative 1 left the center unfinished, alternative 2 introduced pseudo-text, and the adjacent seed was overexposed.

The selected result is intentionally a modern SDXL reinterpretation, not a claim that the old DreamShaper/SD 1.5 pixels can be reproduced by the current default model. A seed is meaningful only with its complete recipe and model revisions.

Evidence

manifest.json records the prompt, negative prompt, exact model revisions, seed order, selection, Canny settings, scheduler, steps, CFG, ControlNet strength, runtime versions, and every artifact hash. provenance.json records the HPO scope, offline generation boundary, privacy review, and selection rationale.

The source and generated artwork are not covered by the repository's MIT license. They remain subject to the root ARTWORK_LICENSE.md.