# GPT Image Hub prompt

## 夜景城市闪光灯人像
- URL: https://www.gptimagehub.com/zh-CN/library/night-city-flash-portrait
- Generator URL: https://www.gptimagehub.com/zh-CN/generate?promptId=oss-ym-mm-12593
- Markdown URL: https://www.gptimagehub.com/api/agent/markdown?path=%2Fzh-CN%2Flibrary%2Fnight-city-flash-portrait
- Category: 人像与摄影
- Model: nanobananapro
- Aspect ratio: 4:5
- Style: photorealistic
- Tags: 闪光灯摄影, 夜景人像, 城市灯火, 生活方式人像, 高对比度, 名表, 中心构图
- Updated: 2026-10-26T16:50:08.098Z
- Created: 2026-10-26T16:50:08.098Z

生成以直打闪光灯照明、城市夜景灯光为背景的高对比度夜间人像。可调整十六进制颜色值、服装风格或背景风光元素进行定制。

### Full prompt
```text
{
  "metadata": {
    "image_type": "摄影照片",
    "primary_purpose": "人像/生活方式"
  },
  "composition": {
    "rule_applied": "中心构图",
    "aspect_ratio": "4:5",
    "layout": "前景单一主体配合辽阔深远背景",
    "focal_points": [
      "主体明亮的面部与笔挺白衬衫",
      "佩戴名表交叠的双手",
      "背景中闪烁连绵的城市灯火"
    ],
    "visual_hierarchy": "视线始于微笑的面庞，沿开领白衬衫向下至交叠的双手与手表，随后延伸至横向延展的城市夜景与远山轮廓",
    "balance": "对称的主体摆位与略带不对称的背景景观形成对比"
  },
  "color_profile": {
    "dominant_colors": [
      {"color": "深黑/藏青", "hex": "#0D1117", "percentage": "55%", "role": "夜空背景与西装外套"},
      {"color": "纯白", "hex": "#FFFFFF", "percentage": "15%", "role": "主体衬衫"},
      {"color": "暖调肤色", "hex": "#C68767", "percentage": "15%", "role": "主体面部与双手"},
      {"color": "金黄", "hex": "#F4C430", "percentage": "10%", "role": "城市点状夜景灯光"}
    ],
    "color_palette": "冷调深蓝黑阴影与暖金色灯光构成的互补色调",
    "temperature": "暖色前景与冷暗背景形成对比",
    "saturation": "中度饱和（肤色与灯光鲜艳，阴影深度去饱和）",
    "contrast": "高对比度"
  },
  "lighting": {
    "type": "前景主体机顶硬闪光与背景环境光源混合",
    "source_count": "前景单一主导正面闪光，背景无数微小环境点光源",
    "direction": "正前方略偏上方",
    "quality": "硬光，在下巴、衣领和手部下方形成利落阴影",
    "intensity": "主体明亮，背景整体暗调（低调摄影）",
    "contrast_ratio": "高对比度，产生戏剧性的主体分离感",
    "shadows": {
      "type": "轮廓清晰的硬边阴影",
      "density": "深黑色",
      "placement": "下巴下方、衬衫领后、双手下方、驳头下方"
    },
    "highlights": {
      "treatment": "镜面高光",
      "placement": "鼻尖、额头、发丝质感与表盘表面"
    }
  },
  "technical_specs": {
    "medium": "数码摄影",
    "style": "写实生活方式人像",
    "texture": "光泽感发丝与腕表对比平滑织物与皮肤",
    "sharpness": "主体极度清晰锐利",
    "grain": "深邃夜空背景带有些微数码噪点",
    "depth_of_field": "中景深（主体锐利，远处城市轮廓清晰可辨）",
    "perspective": "平视视线视角"
  }
}
```