雪中城市肖像

A structured JSON prompt for Gemini Nano Banana Pro to generate a candid, knees-up portrait of a young woman on a wet city street during gentle snowfall. The prompt details her layered winter outfit (burgundy oversized coat, tailored trousers), the environment (historic skyscraper, wet asphalt), and the photography style (intimate iPhone snapshot, cool desaturated tones, film grain), with strict negative prompts for facial preservation.

{
  "image_prompt": {
    "subject": {
      "face_preservation": true,
      "description": "年轻女性在温和降雪中随意站在潮湿的城市街道上",
      "framing": "膝盖以上肖像，自然且未摆拍",
      "pose": {
        "hand_1": "一只手插在口袋里",
        "hand_2": "另一只手遮挡飘落的雪",
        "expression": "放松、自然的表情",
        "body_position": "随意站立，体重微微转移"
      },
      "appearance": {
        "hair": {
          "length": "稍微长发",
          "style": "凌乱，塞在耳后",
          "movement": "轻雪造成微妙的质感"
        },
        "outfit": {
          "coat": {
            "type": "超大羊毛外套",
            "color": "酒红色"
          },
          "layers": [
            "柔软灰色毛衣",
            "干净有领衬衫",
            "轻松系着的黑色领带"
          ],
          "bottoms": {
            "type": "剪裁长裤",
            "color": "冷灰色"
          }
        }
      }
    },

    "environment": {
      "setting": "潮湿的冬季城市街道",
      "weather": "温和降雪",
      "background": {
        "architecture": "宏伟的历史摩天大楼，带有详细石雕和高耸尖顶",
        "lighting": "柔和的黄色城市灯光反射在潮湿的柏油路上",
        "street_elements": [
          "行驶的出租车",
          "潮湿反光的路面"
        ]
      },
      "atmosphere": {
        "daylight": "柔和阴天冬季光线",
        "mood": "凉爽、去饱和、电影感",
        "texture": "微妙的胶片颗粒"
      }
    },

    "photography": {
      "style": "亲密自然的手机快照",
      "focus": "皮"皮肤、雪、织物和潮湿环境的真实质感",
      "color_tone": "凉爽冬季色调，带有柔和温暖反射",
      "shadows": "漫射、柔和",
      "quality": "高分辨率"
    },

    "composition": {
      "type": "随意手持构图",
      "perspective": "眼平视角",
      "negative_prompt": [
        "脸部结构被更改",
        "不正确的眼形",
        "不同的发型",
        "不正确的服装颜色",
        "无雪",
        "过度风格化的灯光",
        "强烈阴影",
        "AI扭曲",
        "多余的肢体"
      ]
    }
  }
}

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