低调光影下的沉思者黑白肖像

{
  "master_prompt": {
    "scene_type": "fine-art cinematic monochrome studio portrait",
    "reference_requirement": {
      "identity_match": "precisely match the uploaded reference image",
      "facial_structure_accuracy": [
        "bone structure",
        "eye shape",
        "nose proportions",
        "jawline definition",
        "facial symmetry",
        "hairline",
        "beard density if present"
      ],
      "skin_texture": "authentic natural skin texture with visible pores and fine lines",
      "no_artificial_smoothing": true
    },
    "subject": {
      "type": "mature confident man",
      "expression": {
        "mood": "serious, contemplative, quietly authoritative",
        "gaze": "deep-set eyes looking directly into the camera",
        "emotion": "focused and introspective, not aggressive"
      }
    },
    "facial_hair": {
      "adaptive": true,
      "rules": [
        "replicate beard exactly if present",
        "match density, length, shape, and edges",
        "preserve natural tonal variation including salt-and-pepper if visible",
        "beard lines clean and structured"
      ],
      "clean_shaven_rule": "if clean-shaven, emphasize natural jawline definition and skin texture"
    },
    "hairstyle": {
      "adaptive": true,
      "requirement": "match hairstyle from reference image exactly",
      "details": [
        "same volume",
        "same direction",
        "same hairline",
        "natural strand texture",
        "subtle specular highlights from overhead lighting"
      ]
    },
    "pose": {
      "style": "classic thinker pose",
      "description": [
        "one hand raised to chin",
        "thumb along the jawline",
        "index finger slightly curled",
        "knuckles and tendons subtly defined",
        "hand in sharp focus with natural skin texture"
      ]
    },
    "lighting": {
      "style": "low-key fine-art studio lighting",
      "contrast": "high contrast but refined tonal control",
      "key_light": {
        "position": "slightly above eye level",
        "direction": "toward viewer's left angled downward",
        "type": "large softbox or diffused beauty dish",
        "effect": "strong top-plane highlights with crisp edge definition"
      },
      "highlight_focus": [
        "forehead center",
        "nose bridge",
        "upper cheekbones",
        "beard texture",
        "top planes of the hand"
      ],
      "shadow_control": [
        "subtle shadow shaping under brow ridge",
        "defined cheekbone shadow",
        "deep but detailed shadow side",
        "midtone detail preserved"
      ],
      "fill_light": {
        "position": "minimal fill from front-center",
        "purpose": "maintain facial symmetry while preserving depth"
      },
      "rim_light": {
        "intensity": "very subtle",
        "location": "hair edges and outer shoulder",
        "purpose": "separate subject from black"
      }
    }
  }
}

{
  "master_prompt": {
    "scene_type": "艺术电影风格黑白影棚肖像",
    "reference_requirement": {
      "identity_match": "精确匹配上传的参考图像",
      "facial_structure_accuracy": [
        "骨骼结构",
        "眼睛形状",
        "鼻子比例",
        "下颌线清晰度",
        "面部对称性",
        "发际线",
        "胡须密度（如果存在）"
      ],
      "skin_texture": "真实的自然皮肤纹理，可见毛孔和细纹",
      "no_artificial_smoothing": true
    },
    "subject": {
      "type": "成熟自信的男性",
      "expression": {
        "mood": "严肃、沉思、沉静而权威",
        "gaze": "深邃的眼睛直视镜头",
        "emotion": "专注而内省，不具侵略性"
      }
    },
    "facial_hair": {
      "adaptive": true,
      "rules": [
        "如果存在胡须，精确复制",
        "匹配密度、长度、形状和边缘",
        "保留自然的色调变化，包括可见的灰白胡须",
        "胡须线条干净且结构清晰"
      ],
      "clean_shaven_rule": "如果干净剃须，强调自然的下颌线清晰度和皮肤纹理"
    },
    "hairstyle": {
      "adaptive": true,
      "requirement": "精确匹配参考图像中的发型",
      "details": [
        "相同的发量",
        "相同的方向",
        "相同的发际线",
        "自然的头发纹理",
        "头顶光线产生的微妙镜面高光"
      ]
    },
    "pose": {
      "style": "经典思考者姿势",
      "description": [
        "一只手抬至下巴",
        "拇指沿下颌线",
        "食指略微弯曲",
        "指关节和肌腱微妙地显现",
        "手部清晰对焦，具有自然皮肤纹理"
      ]
    },
    "lighting": {
      "style": "低调艺术影棚布光",
      "contrast": "高对比度但精致的色调控制",
      "key_light": {
        "position": "略高于视线水平",
        "direction": "朝向观看者左侧向下倾斜",
        "type": "大型柔光箱或柔光美颜碟",
        "effect": "强烈的顶部平面高光，边缘清晰锐利"
      },
      "highlight_focus": [
        "前额中心",
        "鼻梁",
        "上颧骨",
        "胡须纹理",
        "手部顶部平面"
      ],
      "shadow_control": [
        "眉骨下方微妙的阴影塑造",
        "清晰的颧骨阴影",
        "深邃但细节丰富的阴影侧",
        "保留中间调细节"
      ],
      "fill_light": {
        "position": "前中心极少量补光",
        "purpose": "保持面部对称性同时保留深度"
      },
      "rim_light": {
        "intensity": "非常微妙",
        "location": "发丝边缘和外侧肩膀",
        "purpose": "将主体与黑色背景分离"
      }
    }
  }
}