from typing import Any, List, Optional, Tuple
import cv2
import insightface
import threading
import numpy as np
import modules.globals
import logging
import modules.processors.frame.core
from modules.core import update_status
from modules.face_analyser import get_one_face, get_many_faces, default_source_face
from modules.typing import Face, Frame
from modules.hair_segmenter import segment_hair
from modules.utilities import (
conditional_download,
is_image,
is_video,
)
from modules.cluster_analysis import find_closest_centroid
import os
FACE_SWAPPER = None
THREAD_LOCK = threading.Lock()
NAME = "DLC.FACE-SWAPPER"
abs_dir = os.path.dirname(os.path.abspath(__file__))
models_dir = os.path.join(
os.path.dirname(os.path.dirname(os.path.dirname(abs_dir))), "models"
)
def pre_check() -> bool:
download_directory_path = abs_dir
conditional_download(
download_directory_path,
[
"https://huggingface.co/hacksider/deep-live-cam/blob/main/inswapper_128_fp16.onnx"
],
)
return True
def pre_start() -> bool:
if not modules.globals.map_faces and not is_image(modules.globals.source_path):
update_status("Select an image for source path.", NAME)
return False
elif not modules.globals.map_faces and not get_one_face(
cv2.imread(modules.globals.source_path)
):
update_status("No face in source path detected.", NAME)
return False
if not is_image(modules.globals.target_path) and not is_video(
modules.globals.target_path
):
update_status("Select an image or video for target path.", NAME)
return False
return True
def get_face_swapper() -> Any:
global FACE_SWAPPER
with THREAD_LOCK:
if FACE_SWAPPER is None:
model_path = os.path.join(models_dir, "inswapper_128_fp16.onnx")
FACE_SWAPPER = insightface.model_zoo.get_model(
model_path, providers=modules.globals.execution_providers
)
return FACE_SWAPPER
def _prepare_warped_source_material_and_mask(
source_face_obj: Face,
source_frame_full: Frame,
matrix: np.ndarray,
dsize: tuple # Built-in tuple is fine here for parameter type
) -> Tuple[Optional[Frame], Optional[Frame]]:
"""
Prepares warped source material (full image) and a combined (face+hair) mask for blending.
Returns (None, None) if essential masks cannot be generated.
"""
# Generate Hair Mask
hair_only_mask_source_raw = segment_hair(source_frame_full)
if hair_only_mask_source_raw.ndim == 3 and hair_only_mask_source_raw.shape[2] == 3:
hair_only_mask_source_raw = cv2.cvtColor(hair_only_mask_source_raw, cv2.COLOR_BGR2GRAY)
_, hair_only_mask_source_binary = cv2.threshold(hair_only_mask_source_raw, 127, 255, cv2.THRESH_BINARY)
# Generate Face Mask
face_only_mask_source_raw = create_face_mask(source_face_obj, source_frame_full)
_, face_only_mask_source_binary = cv2.threshold(face_only_mask_source_raw, 127, 255, cv2.THRESH_BINARY)
# Combine Face and Hair Masks
if face_only_mask_source_binary.shape != hair_only_mask_source_binary.shape:
logging.warning("Resizing hair mask to match face mask for source during preparation.")
hair_only_mask_source_binary = cv2.resize(
hair_only_mask_source_binary,
(face_only_mask_source_binary.shape[1], face_only_mask_source_binary.shape[0]),
interpolation=cv2.INTER_NEAREST
)
actual_combined_source_mask = cv2.bitwise_or(face_only_mask_source_binary, hair_only_mask_source_binary)
actual_combined_source_mask_blurred = cv2.GaussianBlur(actual_combined_source_mask, (5, 5), 3)
# Warp the Combined Mask and Full Source Material
warped_full_source_material = cv2.warpAffine(source_frame_full, matrix, dsize)
warped_combined_mask_temp = cv2.warpAffine(actual_combined_source_mask_blurred, matrix, dsize)
_, warped_combined_mask_binary_for_clone = cv2.threshold(warped_combined_mask_temp, 127, 255, cv2.THRESH_BINARY)
return warped_full_source_material, warped_combined_mask_binary_for_clone
def _blend_material_onto_frame(
base_frame: Frame,
material_to_blend: Frame,
mask_for_blending: Frame
) -> Frame:
"""
Blends material onto a base frame using a mask.
Uses seamlessClone if possible, otherwise falls back to simple masking.
"""
x, y, w, h = cv2.boundingRect(mask_for_blending)
output_frame = base_frame # Start with base, will be modified by blending
if w > 0 and h > 0:
center = (x + w // 2, y + h // 2)
if material_to_blend.shape == base_frame.shape and \
material_to_blend.dtype == base_frame.dtype and \
mask_for_blending.dtype == np.uint8:
try:
# Important: seamlessClone modifies the first argument (dst) if it's the same as the output var
# So, if base_frame is final_swapped_frame, it will be modified in place.
# If we want to keep base_frame pristine, it should be base_frame.copy() if it's also final_swapped_frame.
# Given final_swapped_frame is already a copy of swapped_frame at this point, this is fine.
output_frame = cv2.seamlessClone(material_to_blend, base_frame, mask_for_blending, center, cv2.NORMAL_CLONE)
except cv2.error as e:
logging.warning(f"cv2.seamlessClone failed: {e}. Falling back to simple blending.")
boolean_mask = mask_for_blending > 127
output_frame[boolean_mask] = material_to_blend[boolean_mask]
else:
logging.warning("Mismatch in shape/type for seamlessClone. Falling back to simple blending.")
boolean_mask = mask_for_blending > 127
output_frame[boolean_mask] = material_to_blend[boolean_mask]
else:
logging.info("Warped mask for blending is empty. Skipping blending.")
return output_frame
def swap_face(source_face_obj: Face, target_face: Face, source_frame_full: Frame, temp_frame: Frame) -> Frame:
face_swapper = get_face_swapper()
# Apply the base face swap
swapped_frame = face_swapper.get(temp_frame, target_face, source_face_obj, paste_back=True)
final_swapped_frame = swapped_frame # Initialize with the base swap. Copy is made only if needed.
if modules.globals.enable_hair_swapping:
if not (source_face_obj.kps is not None and \
target_face.kps is not None and \
source_face_obj.kps.shape[0] >= 3 and \
target_face.kps.shape[0] >= 3):
logging.warning(
f"Skipping hair blending due to insufficient keypoints. "
f"Source kps: {source_face_obj.kps.shape if source_face_obj.kps is not None else 'None'}, "
f"Target kps: {target_face.kps.shape if target_face.kps is not None else 'None'}."
)
else:
source_kps_float = source_face_obj.kps.astype(np.float32)
target_kps_float = target_face.kps.astype(np.float32)
matrix, _ = cv2.estimateAffinePartial2D(source_kps_float, target_kps_float, method=cv2.LMEDS)
if matrix is None:
logging.warning("Failed to estimate affine transformation matrix for hair. Skipping hair blending.")
else:
dsize = (temp_frame.shape[1], temp_frame.shape[0]) # width, height
warped_material, warped_mask = _prepare_warped_source_material_and_mask(
source_face_obj, source_frame_full, matrix, dsize
)
if warped_material is not None and warped_mask is not None:
# Make a copy only now that we are sure we will modify it for hair.
final_swapped_frame = swapped_frame.copy()
color_corrected_material = apply_color_transfer(warped_material, final_swapped_frame) # Use final_swapped_frame for color context
final_swapped_frame = _blend_material_onto_frame(
final_swapped_frame,
color_corrected_material,
warped_mask
)
# Mouth Mask Logic (operates on final_swapped_frame)
if modules.globals.mouth_mask:
# If final_swapped_frame wasn't copied for hair, it needs to be copied now before mouth mask modification.
if final_swapped_frame is swapped_frame: # Check if it's still the same object
final_swapped_frame = swapped_frame.copy()
# Create a mask for the target face
face_mask = create_face_mask(target_face, temp_frame)
# Create the mouth mask
mouth_mask, mouth_cutout, mouth_box, lower_lip_polygon = (
create_lower_mouth_mask(target_face, temp_frame)
)
# Apply the mouth area
# Apply to final_swapped_frame if hair blending happened, otherwise to swapped_frame
final_swapped_frame = apply_mouth_area(
final_swapped_frame, mouth_cutout, mouth_box, face_mask, lower_lip_polygon
)
if modules.globals.show_mouth_mask_box:
mouth_mask_data = (mouth_mask, mouth_cutout, mouth_box, lower_lip_polygon)
final_swapped_frame = draw_mouth_mask_visualization(
final_swapped_frame, target_face, mouth_mask_data
)
return final_swapped_frame
def process_frame(source_face_obj: Face, source_frame_full: Frame, temp_frame: Frame) -> Frame:
if modules.globals.color_correction:
temp_frame = cv2.cvtColor(temp_frame, cv2.COLOR_BGR2RGB)
if modules.globals.many_faces:
many_faces = get_many_faces(temp_frame)
if many_faces:
for target_face in many_faces:
if source_face_obj and target_face:
temp_frame = swap_face(source_face_obj, target_face, source_frame_full, temp_frame)
else:
print("Face detection failed for target/source.")
else:
target_face = get_one_face(temp_frame)
if target_face and source_face_obj:
temp_frame = swap_face(source_face_obj, target_face, source_frame_full, temp_frame)
else:
logging.error("Face detection failed for target or source.")
return temp_frame
# process_frame_v2 needs to accept source_frame_full as well
def _process_image_target_v2(source_frame_full: Frame, temp_frame: Frame) -> Frame:
if modules.globals.many_faces:
source_face_obj = default_source_face()
if source_face_obj:
for map_item in modules.globals.source_target_map:
target_face = map_item["target"]["face"]
temp_frame = swap_face(source_face_obj, target_face, source_frame_full, temp_frame)
else: # not many_faces
for map_item in modules.globals.source_target_map:
if "source" in map_item:
source_face_obj = map_item["source"]["face"]
target_face = map_item["target"]["face"]
temp_frame = swap_face(source_face_obj, target_face, source_frame_full, temp_frame)
return temp_frame
def _process_video_target_v2(source_frame_full: Frame, temp_frame: Frame, temp_frame_path: str) -> Frame:
if modules.globals.many_faces:
source_face_obj = default_source_face()
if source_face_obj:
for map_item in modules.globals.source_target_map:
target_frames_data = [f for f in map_item.get("target_faces_in_frame", []) if f.get("location") == temp_frame_path]
for frame_data in target_frames_data:
for target_face in frame_data.get("faces", []):
temp_frame = swap_face(source_face_obj, target_face, source_frame_full, temp_frame)
else: # not many_faces
for map_item in modules.globals.source_target_map:
if "source" in map_item:
source_face_obj = map_item["source"]["face"]
target_frames_data = [f for f in map_item.get("target_faces_in_frame", []) if f.get("location") == temp_frame_path]
for frame_data in target_frames_data:
for target_face in frame_data.get("faces", []):
temp_frame = swap_face(source_face_obj, target_face, source_frame_full, temp_frame)
return temp_frame
def _process_live_target_v2(source_frame_full: Frame, temp_frame: Frame) -> Frame:
detected_faces = get_many_faces(temp_frame)
if not detected_faces:
return temp_frame
if modules.globals.many_faces:
source_face_obj = default_source_face()
if source_face_obj:
for target_face in detected_faces:
temp_frame = swap_face(source_face_obj, target_face, source_frame_full, temp_frame)
else: # not many_faces (apply simple_map logic)
if not modules.globals.simple_map or \
not modules.globals.simple_map.get("target_embeddings") or \
not modules.globals.simple_map.get("source_faces"):
logging.warning("Simple map is not configured correctly. Skipping face swap.")
return temp_frame
target_embeddings = modules.globals.simple_map["target_embeddings"]
source_faces_from_map = modules.globals.simple_map["source_faces"]
if len(detected_faces) <= len(target_embeddings):
for detected_face in detected_faces:
closest_centroid_index, _ = find_closest_centroid(target_embeddings, detected_face.normed_embedding)
if closest_centroid_index < len(source_faces_from_map):
source_face_obj_from_map = source_faces_from_map[closest_centroid_index]
temp_frame = swap_face(source_face_obj_from_map, detected_face, source_frame_full, temp_frame)
else:
logging.warning(f"Centroid index {closest_centroid_index} out of bounds for source_faces_from_map.")
else: # More detected faces than target embeddings in simple_map
detected_faces_embeddings = [face.normed_embedding for face in detected_faces]
for i, target_embedding in enumerate(target_embeddings):
if i < len(source_faces_from_map):
closest_detected_face_index, _ = find_closest_centroid(detected_faces_embeddings, target_embedding)
source_face_obj_from_map = source_faces_from_map[i]
target_face_to_swap = detected_faces[closest_detected_face_index]
temp_frame = swap_face(source_face_obj_from_map, target_face_to_swap, source_frame_full, temp_frame)
# Optionally, remove the swapped detected face to prevent re-swapping if one source maps to multiple targets.
# This depends on desired behavior. For now, simple independent mapping.
else:
logging.warning(f"Index {i} out of bounds for source_faces_from_map in simple_map else case.")
return temp_frame
def process_frame_v2(source_frame_full: Frame, temp_frame: Frame, temp_frame_path: str = "") -> Frame:
if is_image(modules.globals.target_path):
return _process_image_target_v2(source_frame_full, temp_frame)
elif is_video(modules.globals.target_path):
return _process_video_target_v2(source_frame_full, temp_frame, temp_frame_path)
else: # This is the live cam / generic case
return _process_live_target_v2(source_frame_full, temp_frame)
def process_frames(
source_path: str, temp_frame_paths: List[str], progress: Any = None
) -> None:
source_img = cv2.imread(source_path)
if source_img is None:
logging.error(f"Failed to read source image from {source_path}")
return
if not modules.globals.map_faces:
source_face_obj = get_one_face(source_img) # Use source_img here
if not source_face_obj:
logging.error(f"No face detected in source image {source_path}")
return
for temp_frame_path in temp_frame_paths:
temp_frame = cv2.imread(temp_frame_path)
if temp_frame is None:
logging.warning(f"Failed to read temp_frame from {temp_frame_path}, skipping.")
continue
try:
result = process_frame(source_face_obj, source_img, temp_frame)
cv2.imwrite(temp_frame_path, result)
except Exception as exception:
logging.error(f"Error processing frame {temp_frame_path}: {exception}", exc_info=True)
pass
if progress:
progress.update(1)
else: # This is for map_faces == True
# In map_faces=True, source_face is determined per mapping.
# process_frame_v2 will need source_frame_full for hair,
# which should be the original source_path image.
for temp_frame_path in temp_frame_paths:
temp_frame = cv2.imread(temp_frame_path)
if temp_frame is None:
logging.warning(f"Failed to read temp_frame from {temp_frame_path}, skipping.")
continue
try:
# Pass source_img (as source_frame_full) to process_frame_v2
result = process_frame_v2(source_img, temp_frame, temp_frame_path)
cv2.imwrite(temp_frame_path, result)
except Exception as exception:
logging.error(f"Error processing frame {temp_frame_path} with map_faces: {exception}", exc_info=True)
pass
if progress:
progress.update(1)
def process_image(source_path: str, target_path: str, output_path: str) -> None:
source_img = cv2.imread(source_path)
if source_img is None:
logging.error(f"Failed to read source image from {source_path}")
return
target_frame = cv2.imread(target_path)
if target_frame is None:
logging.error(f"Failed to read target image from {target_path}")
return
# Read the original target frame once at the beginning
original_target_frame = cv2.imread(target_path)
if original_target_frame is None:
logging.error(f"Failed to read original target image from {target_path}")
return
result = None # Initialize result
if not modules.globals.map_faces:
source_face_obj = get_one_face(source_img) # Use source_img here
if not source_face_obj:
logging.error(f"No face detected in source image {source_path}")
return
result = process_frame(source_face_obj, source_img, original_target_frame)
else: # map_faces is True
if modules.globals.many_faces:
update_status(
"Many faces enabled. Using first source image. Progressing...", NAME
)
# process_frame_v2 takes the original target frame for processing.
# target_path is passed as temp_frame_path for consistency with process_frame_v2's signature,
# used for map lookups in video context but less critical for single images.
result = process_frame_v2(source_img, original_target_frame, target_path)
if result is not None:
cv2.imwrite(output_path, result)
else:
logging.error(f"Processing image {target_path} failed, result was None.")
def process_video(source_path: str, temp_frame_paths: List[str]) -> None:
if modules.globals.map_faces and modules.globals.many_faces:
update_status(
"Many faces enabled. Using first source image. Progressing...", NAME
)
modules.processors.frame.core.process_video(
source_path, temp_frame_paths, process_frames
)
def create_lower_mouth_mask(
face: Face, frame: Frame
) -> (np.ndarray, np.ndarray, tuple, np.ndarray):
mask = np.zeros(frame.shape[:2], dtype=np.uint8)
mouth_cutout = None
landmarks = face.landmark_2d_106
if landmarks is not None:
# 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
lower_lip_order = [
65,
66,
62,
70,
69,
18,
19,
20,
21,
22,
23,
24,
0,
8,
7,
6,
5,
4,
3,
2,
65,
]
lower_lip_landmarks = landmarks[lower_lip_order].astype(
np.float32
) # Use float for precise calculations
# Calculate the center of the landmarks
center = np.mean(lower_lip_landmarks, axis=0)
# Expand the landmarks outward
expansion_factor = (
1 + modules.globals.mask_down_size
) # Adjust this for more or less expansion
expanded_landmarks = (lower_lip_landmarks - center) * expansion_factor + center
# Extend the top lip part
toplip_indices = [
20,
0,
1,
2,
3,
4,
5,
] # Indices for landmarks 2, 65, 66, 62, 70, 69, 18
toplip_extension = (
modules.globals.mask_size * 0.5
) # Adjust this factor to control the extension
for idx in toplip_indices:
direction = expanded_landmarks[idx] - center
direction = direction / np.linalg.norm(direction)
expanded_landmarks[idx] += direction * toplip_extension
# Extend the bottom part (chin area)
chin_indices = [
11,
12,
13,
14,
15,
16,
] # Indices for landmarks 21, 22, 23, 24, 0, 8
chin_extension = 2 * 0.2 # Adjust this factor to control the extension
for idx in chin_indices:
expanded_landmarks[idx][1] += (
expanded_landmarks[idx][1] - center[1]
) * chin_extension
# Convert back to integer coordinates
expanded_landmarks = expanded_landmarks.astype(np.int32)
# Calculate bounding box for the expanded lower mouth
min_x, min_y = np.min(expanded_landmarks, axis=0)
max_x, max_y = np.max(expanded_landmarks, axis=0)
# Add some padding to the bounding box
padding = int((max_x - min_x) * 0.1) # 10% padding
min_x = max(0, min_x - padding)
min_y = max(0, min_y - padding)
max_x = min(frame.shape[1], max_x + padding)
max_y = min(frame.shape[0], max_y + padding)
# Ensure the bounding box dimensions are valid
if max_x <= min_x or max_y <= min_y:
if (max_x - min_x) <= 1:
max_x = min_x + 1
if (max_y - min_y) <= 1:
max_y = min_y + 1
# Create the mask
mask_roi = np.zeros((max_y - min_y, max_x - min_x), dtype=np.uint8)
cv2.fillPoly(mask_roi, [expanded_landmarks - [min_x, min_y]], 255)
# Apply Gaussian blur to soften the mask edges
mask_roi = cv2.GaussianBlur(mask_roi, (15, 15), 5)
# Place the mask ROI in the full-sized mask
mask[min_y:max_y, min_x:max_x] = mask_roi
# Extract the masked area from the frame
mouth_cutout = frame[min_y:max_y, min_x:max_x].copy()
# Return the expanded lower lip polygon in original frame coordinates
lower_lip_polygon = expanded_landmarks
return mask, mouth_cutout, (min_x, min_y, max_x, max_y), lower_lip_polygon
def draw_mouth_mask_visualization(
frame: Frame, face: Face, mouth_mask_data: tuple
) -> Frame:
landmarks = face.landmark_2d_106
if landmarks is not None and mouth_mask_data is not None:
mask, mouth_cutout, (min_x, min_y, max_x, max_y), lower_lip_polygon = (
mouth_mask_data
)
vis_frame = frame.copy()
# Ensure coordinates are within frame bounds
height, width = vis_frame.shape[:2]
min_x, min_y = max(0, min_x), max(0, min_y)
max_x, max_y = min(width, max_x), min(height, max_y)
# Adjust mask to match the region size
mask_region = mask[0 : max_y - min_y, 0 : max_x - min_x]
# Remove the color mask overlay
# color_mask = cv2.applyColorMap((mask_region * 255).astype(np.uint8), cv2.COLORMAP_JET)
# Ensure shapes match before blending
vis_region = vis_frame[min_y:max_y, min_x:max_x]
# Remove blending with color_mask
# if vis_region.shape[:2] == color_mask.shape[:2]:
# blended = cv2.addWeighted(vis_region, 0.7, color_mask, 0.3, 0)
# vis_frame[min_y:max_y, min_x:max_x] = blended
# Draw the lower lip polygon
cv2.polylines(vis_frame, [lower_lip_polygon], True, (0, 255, 0), 2)
# Remove the red box
# cv2.rectangle(vis_frame, (min_x, min_y), (max_x, max_y), (0, 0, 255), 2)
# Visualize the feathered mask
feather_amount = max(
1,
min(
30,
(max_x - min_x) // modules.globals.mask_feather_ratio,
(max_y - min_y) // modules.globals.mask_feather_ratio,
),
)
# Ensure kernel size is odd
kernel_size = 2 * feather_amount + 1
feathered_mask = cv2.GaussianBlur(
mask_region.astype(float), (kernel_size, kernel_size), 0
)
feathered_mask = (feathered_mask / feathered_mask.max() * 255).astype(np.uint8)
# Remove the feathered mask color overlay
# color_feathered_mask = cv2.applyColorMap(feathered_mask, cv2.COLORMAP_VIRIDIS)
# Ensure shapes match before blending feathered mask
# if vis_region.shape == color_feathered_mask.shape:
# blended_feathered = cv2.addWeighted(vis_region, 0.7, color_feathered_mask, 0.3, 0)
# vis_frame[min_y:max_y, min_x:max_x] = blended_feathered
# Add labels
cv2.putText(
vis_frame,
"Lower Mouth Mask",
(min_x, min_y - 10),
cv2.FONT_HERSHEY_SIMPLEX,
0.5,
(255, 255, 255),
1,
)
cv2.putText(
vis_frame,
"Feathered Mask",
(min_x, max_y + 20),
cv2.FONT_HERSHEY_SIMPLEX,
0.5,
(255, 255, 255),
1,
)
return vis_frame
return frame
def apply_mouth_area(
frame: np.ndarray,
mouth_cutout: np.ndarray,
mouth_box: tuple,
face_mask: np.ndarray,
mouth_polygon: np.ndarray,
) -> np.ndarray:
min_x, min_y, max_x, max_y = mouth_box
box_width = max_x - min_x
box_height = max_y - min_y
if (
mouth_cutout is None
or box_width is None
or box_height is None
or face_mask is None
or mouth_polygon is None
):
return frame
try:
resized_mouth_cutout = cv2.resize(mouth_cutout, (box_width, box_height))
roi = frame[min_y:max_y, min_x:max_x]
if roi.shape != resized_mouth_cutout.shape:
resized_mouth_cutout = cv2.resize(
resized_mouth_cutout, (roi.shape[1], roi.shape[0])
)
color_corrected_mouth = apply_color_transfer(resized_mouth_cutout, roi)
# Use the provided mouth polygon to create the mask
polygon_mask = np.zeros(roi.shape[:2], dtype=np.uint8)
adjusted_polygon = mouth_polygon - [min_x, min_y]
cv2.fillPoly(polygon_mask, [adjusted_polygon], 255)
# Apply feathering to the polygon mask
feather_amount = min(
30,
box_width // modules.globals.mask_feather_ratio,
box_height // modules.globals.mask_feather_ratio,
)
feathered_mask = cv2.GaussianBlur(
polygon_mask.astype(float), (0, 0), feather_amount
)
feathered_mask = feathered_mask / feathered_mask.max()
face_mask_roi = face_mask[min_y:max_y, min_x:max_x]
combined_mask = feathered_mask * (face_mask_roi / 255.0)
combined_mask = combined_mask[:, :, np.newaxis]
blended = (
color_corrected_mouth * combined_mask + roi * (1 - combined_mask)
).astype(np.uint8)
# Apply face mask to blended result
face_mask_3channel = (
np.repeat(face_mask_roi[:, :, np.newaxis], 3, axis=2) / 255.0
)
final_blend = blended * face_mask_3channel + roi * (1 - face_mask_3channel)
frame[min_y:max_y, min_x:max_x] = final_blend.astype(np.uint8)
except Exception as e:
pass
return frame
def create_face_mask(face: Face, frame: Frame) -> np.ndarray:
mask = np.zeros(frame.shape[:2], dtype=np.uint8)
landmarks = face.landmark_2d_106
if landmarks is not None:
# Convert landmarks to int32
landmarks = landmarks.astype(np.int32)
# Extract facial features
right_side_face = landmarks[0:16]
left_side_face = landmarks[17:32]
right_eye = landmarks[33:42]
right_eye_brow = landmarks[43:51]
left_eye = landmarks[87:96]
left_eye_brow = landmarks[97:105]
# Calculate forehead extension
right_eyebrow_top = np.min(right_eye_brow[:, 1])
left_eyebrow_top = np.min(left_eye_brow[:, 1])
eyebrow_top = min(right_eyebrow_top, left_eyebrow_top)
face_top = np.min([right_side_face[0, 1], left_side_face[-1, 1]])
forehead_height = face_top - eyebrow_top
extended_forehead_height = int(forehead_height * 5.0) # Extend by 50%
# Create forehead points
forehead_left = right_side_face[0].copy()
forehead_right = left_side_face[-1].copy()
forehead_left[1] -= extended_forehead_height
forehead_right[1] -= extended_forehead_height
# Combine all points to create the face outline
face_outline = np.vstack(
[
[forehead_left],
right_side_face,
left_side_face[
::-1
], # Reverse left side to create a continuous outline
[forehead_right],
]
)
# Calculate padding
padding = int(
np.linalg.norm(right_side_face[0] - left_side_face[-1]) * 0.05
) # 5% of face width
# Create a slightly larger convex hull for padding
hull = cv2.convexHull(face_outline)
hull_padded = []
for point in hull:
x, y = point[0]
center = np.mean(face_outline, axis=0)
direction = np.array([x, y]) - center
direction = direction / np.linalg.norm(direction)
padded_point = np.array([x, y]) + direction * padding
hull_padded.append(padded_point)
hull_padded = np.array(hull_padded, dtype=np.int32)
# Fill the padded convex hull
cv2.fillConvexPoly(mask, hull_padded, 255)
# Smooth the mask edges
mask = cv2.GaussianBlur(mask, (5, 5), 3)
return mask
def apply_color_transfer(source, target):
"""
Apply color transfer from target to source image
"""
source = cv2.cvtColor(source, cv2.COLOR_BGR2LAB).astype("float32")
target = cv2.cvtColor(target, cv2.COLOR_BGR2LAB).astype("float32")
source_mean, source_std = cv2.meanStdDev(source)
target_mean, target_std = cv2.meanStdDev(target)
# Reshape mean and std to be broadcastable
source_mean = source_mean.reshape(1, 1, 3)
source_std = source_std.reshape(1, 1, 3)
target_mean = target_mean.reshape(1, 1, 3)
target_std = target_std.reshape(1, 1, 3)
# Perform the color transfer
source = (source - source_mean) * (target_std / source_std) + target_mean
return cv2.cvtColor(np.clip(source, 0, 255).astype("uint8"), cv2.COLOR_LAB2BGR)