Pixel-Perfect Identity Swap AI Image Prompt

An extremely technical JSON prompt designed for near pixel-perfect identity replacement (identity swap) using an uploaded subject image. It locks numerous technical parameters including camera height, lens focal length, aperture, and specific pixel coordinates for facial features, ensuring the new identity is inserted into the exact pose and scene of the reference image.

Prompt

{
  "metadata": {
    "engine_name": "PX-LOCK-X",
    "prompt_version": "pxlockx-1.0.0",
    "generation_goal": "Near pixel-perfect recreation with identity-only replacement",
    "reference_frame_policy": {
      "use_reference_as_ground_truth": true,
      "identity_swap_only": true,
      "no_creative_inference": true
    },
    "units": {
      "angles": "degrees",
      "lengths": "centimeters",
      "coords": "normalized_0_to_1",
      "temperature": "kelvin"
    }
  },

  "identity_replacement": {
    "mode": "identity_only",
    "reference_identity_source": "uploaded_subject_image",
    "replace": {
      "face_identity": true,
      "head_shape": true,
      "hair_color_and_length": true,
      "skin_tone": true,
      "body_identity": true
    },
    "preserve_from_reference": {
      "pose": true,
      "camera": true,
      "lighting": true,
      "environment": true,
      "wardrobe": true,
      "jewelry": true,
      "expression_valence": true,
      "framing_and_crop": true
    },
    "identity_strength": 1.0,
    "no_beautification": true,
    "no_style_transfer": true
    },

  "output_settings": {
    "aspect_ratio": "2:3",
    "resolution_target": "reference_matched",
    "render_style": "photorealistic",
    "color_space": "sRGB",
    "compression": "lossless",
    "dynamic_range": "natural",
    "white_balance_lock": true
  },

  "pixel_coordinates_lock": {
    "lock_enabled": true,
    "reference_frame_dimensions_px_estimate": {
      "width_px": 1024,
      "height_px": 1536
    },
    "crop_boundaries_px_norm": {
      "left_x_norm": 0.0,
      "right_x_norm": 1.0,
      "top_y_norm": 0.0,
      "bottom_y_norm": 1.0
    },
    "primary_subject_bounding_box_norm": {
      "x_min": 0.105,
      "y_min": 0.155,
      "x_max": 0.945,
      "y_max": 0.975
    },
    "head_bounding_box_norm": {
      "x_min": 0.205,
      "y_min": 0.175,
      "x_max": 0.625,
      "y_max": 0.360
    },
    "face_feature_anchors_norm": {
      "left_eye_center": { "x": 0.345, "y": 0.252 },
      "right_eye_center": { "x": 0.445, "y": 0.247 },
      "nose_tip": { "x": 0.405, "y": 0.287 },
      "mouth_center": { "x": 0.403, "y": 0.318 },
      "chin_point": { "x": 0.410, "y": 0.352 }
    }
  },

  "camera_lock": {
    "lock_enabled": true,
    "camera_height_cm": 105.0,
    "camera_to_subject_distance_cm": 230.0,
    "camera_orientation_degrees": {
      "yaw": 8.5,
      "pitch": -3.0,
      "roll": 0.6
    },
    "lens": {
      "focal_length_mm": 85.0,
      "sensor_format": "full_frame",
      "distortion_model": "brown_conrady",
      "distortion_coefficients": { "k1": -0.012, "k2": 0.004 }
    },
    "aperture": {
      "f_number": 2.2,
      "focus_distance_cm": 220.0,
      "focus_target": "face_plane"
    },
    "exposure": {
      "iso": 200,
      "shutter_s": 0.002,
      "exposure_comp_ev": 0.0
    }
  },

  "pose_lock": {
    "lock_enabled": true,
    "pose_type": "deep_squat_crouch",
    "body_facin

How to use this prompt

Copy the prompt above and paste it into an AI image generator such as Google Gemini (Nano Banana) or a similar tool. Replace any bracketed placeholders with your own details, then generate and refine the result.

This prompt is designed to work with a reference photo. Upload your own photo (only one you have the right to use) together with the prompt.

Prompt collection credit: YouMind Awesome Nano Banana Pro Prompts (CC BY 4.0). Credit to the original prompt creators. To request removal of a prompt or image, please contact us.