Hyper-Realistic Pencil Sketch Portrait Prompt

A highly structured JSON prompt for generating a monochromatic, hyper-realistic pencil sketch portrait (digital illustration) based on a reference image. It specifies detailed visual attributes, micro-details (wisps of hair, catchlights in eyes), composition (close-up, shallow depth of field), and lighting (soft, diffused studio lighting) to mimic a professional drawing.

{
  "meta": {
    "image_quality": "High",
    "image_type": "Monochromatic Digital Illustration / Hyper-realistic Pencil Drawing",
    "resolution_estimation": "736 x 914"
  },
  "global_context": {
    "scene_description": "reference image",
    "time_of_day": "Indeterminate / Studio setting",
    "weather_atmosphere": "Serene / Intimate",
    "lighting": {
      "source": "Artificial / Studio Lighting",
      "direction": "Frontal / Slightly Butterfly",
      "quality": "Soft / Diffused",
      "color_temp": "Neutral (Greyscale)"
    }
  },
  "color_palette": {
    "dominant_hex_estimates": [
      "#1A1A1A",
      "#808080",
      "#E6E6E6",
      "#BDBDBD"
    ],
    "accent_colors": [
      "Charcoal",
      "Slate Grey",
      "Silver",
      "Deep Black"
    ],
    "contrast_level": "Medium"
  },
  "composition": {
    "camera_angle": "Eye-level",
    "framing": "Close-up / Headshot",
    "depth_of_field": "Shallow (soft focus on hair extremities and background)",
    "focal_point": "The subject's eyes and the bridge of the nose"
  },
  "objects": [
    {
      "id": "obj_001",
      "label": "Female Subject",
      "category": "Person",
      "location": "Center",
      "prominence": "Foreground",
      "visual_attributes": {
        "color": "Range of greyscale tones",
        "texture": "Smooth skin, fine hair strands, soft lip texture",
        "material": "Skin / Hair",
        "state": "Posed",
        "dimensions_relative": "Occupies roughly 80% of the frame"
      },
      "micro_details": [
        "Individual wisps of hair catching light on the left and right",
        "Subtle catchlights in the pupils of both eyes",
        "Fine rendering of eyelashes and eyebrow hairs",
        "Soft philtrum indentation above the upper lip",
        "Subtle shading on the neck suggesting collarbones",
        "Smooth gradient transition on the forehead and cheeks"
      ],
      "pose_or_orientation": "Facing forward, direct eye contact",
      "text_content": "null"
    },
    {
      "id": "obj_002",
      "label": "Background",
      "category": "Environment",
      "location": "Full frame",
      "prominence": "Background",
      "visual_attributes": {
        "color": "Dark grey to mid-grey gradient",
        "texture": "Grainy / Stippled",
        "material": "null",
        "state": "Static",
        "dimensions_relative": "Full frame coverage behind subject"
      },
      "micro_details": [
        "Noise/grain texture throughout the gradient",
        "Darker vignetting in the four corners",
        "Lighter halo effect immediately surrounding the head"
      ],
      "pose_or_orientation": "null",
      "text_content": "null"
    }
  ],
  "text_ocr": {
    "present": true,
    "content": [
      {
        "text": "https://t.co/UDC60YoONE",
        "location": "Bottom right corner",
        "font_style": "Cursive / Handwritten signature",
        "legibility": "P"
      }
    ]
  }
}

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