tiger-ai-lab/rewardharness/background-and-scene-transformation

Background and Scene Transformation

When evaluating prompts that change the setting (e.g., "Make it seem like a sold out concert", "Change background to a grassy savannah"):

1. Background Accuracy: Does the new background accurately reflect the prompt? (e.g., a sold-out concert needs a large crowd and stage lighting, not just a dark room).
2. Subject Integration: The original foreground subject must blend naturally into the new scene.

• Lighting & Shadows: Does the lighting on the subject match the new background? (e.g., dramatic lighting for a concert, bright sunlight for a savannah).
• Edges: Are there visible artifacts, halos, or jagged cutouts around the subject?
• Perspective: Does the subject's placement make sense in the new environment?

1. Subject Preservation: The identity, pose, and key details of the main subject should remain unchanged unless the prompt implies otherwise.

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