{
"task": "ultrasound_to_reality_render",
"input_constraints": { // <--- Important section added to prevent shape changes
"reference_mode": "strict_structure_preservation",
    "geometry_adherence": "100% match to source depth",
    "distortion_allowed": "none"
  },
  "output": {
    "type": "single_image",
    "quality": "8k_photorealistic"
  },
  "concept": {
    "theme": "miracle of life",
    "mood": "emotional, warm, peaceful",
    "style": "cinematic macro photography"
  },
  "subject": {
    "type": "fetus face close-up",
    "appearance": "30-week unborn baby",
    "structure": "exact morphological match to input ultrasound", // <--- make sure the structure is exactly the same.
    "skin_texture": "hyper-realistic, semi-translucent, vernix caseosa details",
"features": "mapping exact facial landmarks from source", // <--- Position facial features exactly as they were originally set.
"state": "sleeping",
"expression": "serene (matching source)"
},
"environment": {
"setting": "in-utero simulation",
"medium": "amniotic fluid effect",
"background": "soft organic tissue texture"
},
"lighting": {
"type": "volumetric backlighting",
"key_tone": "warm amber",
"effect": "subsurface scattering (light glowing through skin)",
"shadows": "soft and deep preserving original volume" // <--- Shadows must fall in the same position to preserve the original dimension of the image.
},
"composition": {
"framing": "pixel-perfect alignment with source", // <--- Do not move the frame
"camera_angle": "locked to input source view", // <--- Do not change the camera angle
"focus": "sharp focus on facial features",
"lens": "85mm macro"
},
"color_palette": {
"primary": ["golden amber", "deep red", "flesh tones"],
"contrast": "high dynamic range"
}
}