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from typing import Any, Dict, List
from cv2.typing import Size
from functools import lru_cache
import threading
import cv2
import numpy
import onnxruntime
import DeepFakeAI.globals
from DeepFakeAI.typing import Frame, Mask, Padding, FaceMaskRegion, ModelSet
from DeepFakeAI.filesystem import resolve_relative_path
from DeepFakeAI.download import conditional_download
FACE_OCCLUDER = None
FACE_PARSER = None
THREAD_LOCK : threading.Lock = threading.Lock()
MODELS : ModelSet =\
{
'face_occluder':
{
'url': 'https://github.com/DeepFakeAI/DeepFakeAI-assets/releases/download/models/face_occluder.onnx',
'path': resolve_relative_path('../.assets/models/face_occluder.onnx')
},
'face_parser':
{
'url': 'https://github.com/DeepFakeAI/DeepFakeAI-assets/releases/download/models/face_parser.onnx',
'path': resolve_relative_path('../.assets/models/face_parser.onnx')
}
}
FACE_MASK_REGIONS : Dict[FaceMaskRegion, int] =\
{
'skin': 1,
'left-eyebrow': 2,
'right-eyebrow': 3,
'left-eye': 4,
'right-eye': 5,
'eye-glasses': 6,
'nose': 10,
'mouth': 11,
'upper-lip': 12,
'lower-lip': 13
}
def get_face_occluder() -> Any:
global FACE_OCCLUDER
with THREAD_LOCK:
if FACE_OCCLUDER is None:
model_path = MODELS.get('face_occluder').get('path')
FACE_OCCLUDER = onnxruntime.InferenceSession(model_path, providers = DeepFakeAI.globals.execution_providers)
return FACE_OCCLUDER
def get_face_parser() -> Any:
global FACE_PARSER
with THREAD_LOCK:
if FACE_PARSER is None:
model_path = MODELS.get('face_parser').get('path')
FACE_PARSER = onnxruntime.InferenceSession(model_path, providers = DeepFakeAI.globals.execution_providers)
return FACE_PARSER
def clear_face_occluder() -> None:
global FACE_OCCLUDER
FACE_OCCLUDER = None
def clear_face_parser() -> None:
global FACE_PARSER
FACE_PARSER = None
def pre_check() -> bool:
if not DeepFakeAI.globals.skip_download:
download_directory_path = resolve_relative_path('../.assets/models')
model_urls =\
[
MODELS.get('face_occluder').get('url'),
MODELS.get('face_parser').get('url'),
]
conditional_download(download_directory_path, model_urls)
return True
@lru_cache(maxsize = None)
def create_static_box_mask(crop_size : Size, face_mask_blur : float, face_mask_padding : Padding) -> Mask:
blur_amount = int(crop_size[0] * 0.5 * face_mask_blur)
blur_area = max(blur_amount // 2, 1)
box_mask = numpy.ones(crop_size, numpy.float32)
box_mask[:max(blur_area, int(crop_size[1] * face_mask_padding[0] / 100)), :] = 0
box_mask[-max(blur_area, int(crop_size[1] * face_mask_padding[2] / 100)):, :] = 0
box_mask[:, :max(blur_area, int(crop_size[0] * face_mask_padding[3] / 100))] = 0
box_mask[:, -max(blur_area, int(crop_size[0] * face_mask_padding[1] / 100)):] = 0
if blur_amount > 0:
box_mask = cv2.GaussianBlur(box_mask, (0, 0), blur_amount * 0.25)
return box_mask
def create_occlusion_mask(crop_frame : Frame) -> Mask:
face_occluder = get_face_occluder()
prepare_frame = cv2.resize(crop_frame, face_occluder.get_inputs()[0].shape[1:3][::-1])
prepare_frame = numpy.expand_dims(prepare_frame, axis = 0).astype(numpy.float32) / 255
prepare_frame = prepare_frame.transpose(0, 1, 2, 3)
occlusion_mask = face_occluder.run(None,
{
face_occluder.get_inputs()[0].name: prepare_frame
})[0][0]
occlusion_mask = occlusion_mask.transpose(0, 1, 2).clip(0, 1).astype(numpy.float32)
occlusion_mask = cv2.resize(occlusion_mask, crop_frame.shape[:2][::-1])
return occlusion_mask
def create_region_mask(crop_frame : Frame, face_mask_regions : List[FaceMaskRegion]) -> Mask:
face_parser = get_face_parser()
prepare_frame = cv2.flip(cv2.resize(crop_frame, (512, 512)), 1)
prepare_frame = numpy.expand_dims(prepare_frame, axis = 0).astype(numpy.float32)[:, :, ::-1] / 127.5 - 1
prepare_frame = prepare_frame.transpose(0, 3, 1, 2)
region_mask = face_parser.run(None,
{
face_parser.get_inputs()[0].name: prepare_frame
})[0][0]
region_mask = numpy.isin(region_mask.argmax(0), [ FACE_MASK_REGIONS[region] for region in face_mask_regions ])
region_mask = cv2.resize(region_mask.astype(numpy.float32), crop_frame.shape[:2][::-1])
return region_mask
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