47 lines
1.5 KiB
Markdown
47 lines
1.5 KiB
Markdown
---
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title: "Video Physics Definition"
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type: concept
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tags: []
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last_updated: 2026-05-15
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---
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## Definition
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Video Physics Definition（视频物理一致性定义）——在 AI 视频生成（如 Sora、Runway Gen-3）中，通过显式约束确保衣物、头发、辅助行动器具（轮椅、拐杖、假肢）等元素的运动符合真实物理规律的技术方法。
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## Problem
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AI 视频生成模型在渲染动态元素时经常出现物理错误：
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- 衣物（如头巾Hijab）运动不符合重力规律
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- 轮椅轮胎与地面接触不一致（悬浮或穿入地面）
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- 头发运动僵硬或不符合风向
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- 辅助器具（拐杖）位置在连续帧之间漂移
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## Solution: Physics Constraints
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Inclusive Visuals Specialist 通过以下方式注入物理约束：
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```typescript
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// 示例：轮椅运动约束
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"The wheelchair wheels maintain consistent contact with the pavement as she navigates the ramp."
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"Her hijab drapes naturally over the shoulder as she walks, following the slight breeze."
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```
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### Three Levels of Physics Constraints
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1. **Contact Consistency**：物体与接触面的持续接触（轮胎-地面、脚-地板）
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2. **Drape/Gravity**：软性物体的重力下垂（Hijab下摆、宽松衣袖）
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3. **Motion Path**：连续帧之间的运动轨迹平滑性（拐杖支撑点的稳定移动）
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## Related Concepts
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- [[Negative Prompting]]
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- [[Intersectionality]]
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- [[Cultural Authenticity]]
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- [[Inclusive Visuals Specialist]]
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## Aliases
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- 视频物理一致性
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- 物理约束注入
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