Gemini Nano Banana 3.0 高角度自拍肖像提示词

```json
{
  "lighting": {
    "type": "柔和、漫射的室内照明",
    "source": "环境光，可能来自窗户或头顶的灯具，从右上角射入",
    "quality": "温暖而柔和，营造出柔和的阴影",
    "shadows": "主体手臂和头发下方有柔和、不明显的阴影",
    "highlights": "主体皮肤和毯子纹理上有微妙的高光"
  },
  "metadata": {
    "source": "用户提供的图片",
    "description": "一张长发深色年轻女性躺着的俯视自拍照。",
    "created_date": "2024-11-28"
  },
  "background": {
    "type": "有纹理的织物表面和地板",
    "focus": "背景元素柔和模糊",
    "elements": [
      "奶油色针织毯",
      "木地板",
      "部分蓝色鞋子"
    ],
    "description": "主体躺在一张厚实的奶油色针织毯或地毯上。左下角可见木地板和一小部分蓝色鞋子。"
  },
  "typography": {
    "font_style": "不适用",
    "text_present": false
  },
  "composition": {
    "type": "自拍照",
    "framing": "特写主体的上半身和头部",
    "focal_point": "主体的脸部和上半身",
    "orientation": "肖像，主体身体呈对角线构图",
    "perspective": "俯视角度拍摄"
  },
  "color_profile": {
    "palette": "暖中性色调，以奶油白、深棕色、灰色和自然肤色为主",
    "contrast": "深色头发/衣物与浅色背景之间形成柔和对比",
    "saturation": "中等饱和度，带有暖色底调",
    "dominant_colors": [
      "#F0EAD6",
      "#363231",
      "#8C6F5E",
      "#A98D7A"
    ]
  },
  "technical_specs": {
    "focus": "主体脸部和头发对焦清晰",
    "lens_type": "广角镜头",
    "resolution": "中等分辨率",
    "camera_type": "智能手机摄像头",
    "aspect_ratio": "约 2:3"
  },
  "subject_analysis": {
    "hair": "长长的深棕色波浪发，散落在头部和肩部周围",
    "pose": "仰卧，看向镜头，右手拿着手机，左手靠近腿部",
    "skin": "浅至中等肤色，带有暖色底调",
    "person": "一位年轻女性",
    "clothing": "一件深灰色或黑色细肩带露脐上衣，深色下装",
    "expression": "直视镜头，表情平静，略带嘟嘴",
    "accessories": "左手手指上戴着几枚戒指，指甲涂成深色"
  },
  "artistic_elements": {
    "mood": "放松、随意、略带性感",
    "style": "抓拍、亲密的自拍照",
    "texture": "厚实的针织毯和主体头发的纹理突出"
  },
  "generation_parameters": {
    "seed": "不适用",
    "model": "不适用",
    "prompt": "一张长发深色年轻女性的抓拍俯视自拍照"
  }
}
```