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": "年輕女性在溫和降雪中隨意站在潮濕的城市街道上",
      "framing": "膝蓋以上肖像，自然且未擺拍",
      "pose": {
        "hand_1": "一隻手插在口袋裡",
        "hand_2": "另一隻手遮擋飄落的雪",
        "expression": "放鬆、自然的表情",
        "body_position": "隨意站立，體重微微轉移"
      },
      "appearance": {
        "hair": {
          "length": "稍微長髮",
          "style": "凌亂，塞在耳後",
          "movement": "輕雪造成微妙的質感"
        },
        "outfit": {
          "coat": {
            "type": "超大羊毛外套",
            "color": "酒紅色"
          },
          "layers": [
            "柔軟灰色毛衣",
            "乾淨有領襯衫",
            "輕鬆繫著的黑色領帶"
          ],
          "bottoms": {
            "type": "剪裁長褲",
            "color": "冷灰色"
          }
        }
      }
    },

    "environment": {
      "setting": "潮濕的冬季城市街道",
      "weather": "溫和降雪",
      "background": {
        "architecture": "宏偉的歷史摩天大樓，帶有詳細石雕和高聳尖頂",
        "lighting": "柔和的黃色城市燈光反射在潮濕的柏油路上",
        "street_elements": [
          "行駛的計程車",
          "潮濕反光的路面"
        ]
      },
      "atmosphere": {
        "daylight": "柔和陰天冬季光線",
        "mood": "涼爽、去飽和、電影感",
        "texture": "微妙的膠片顆粒"
      }
    },

    "photography": {
      "style": "親密自然的手機快照",
      "focus": "皮"皮膚、雪、織物和潮濕環境的真實質感",
      "color_tone": "涼爽冬季色調，帶有柔和溫暖反射",
      "shadows": "漫射、柔和",
      "quality": "高解析度"
    },

    "composition": {
      "type": "隨意手持構圖",
      "perspective": "眼平視角",
      "negative_prompt": [
        "臉部結構被更改",
        "不正確的眼形",
        "不同的髮型",
        "不正確的服裝顏色",
        "無雪",
        "過度風格化的燈光",
        "強烈陰影",
        "AI扭曲",
        "多餘的肢體"
      ]
    }
  }
}

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