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import os
import cv2
import torch
import gfpgan
from PIL import Image
from upscaler.RealESRGAN import RealESRGAN
from upscaler.codeformer import CodeFormerEnhancer
def gfpgan_runner(img, model):
_, imgs, _ = model.enhance(img, paste_back=True, has_aligned=True)
return imgs[0]
def realesrgan_runner(img, model):
img = model.predict(img)
return img
def codeformer_runner(img, model):
img = model.enhance(img)
return img
supported_enhancers = {
"CodeFormer": ("./assets/pretrained_models/codeformer.onnx", codeformer_runner),
"GFPGAN": ("./assets/pretrained_models/GFPGANv1.4.pth", gfpgan_runner),
"REAL-ESRGAN 2x": ("./assets/pretrained_models/RealESRGAN_x2.pth", realesrgan_runner),
"REAL-ESRGAN 4x": ("./assets/pretrained_models/RealESRGAN_x4.pth", realesrgan_runner),
"REAL-ESRGAN 8x": ("./assets/pretrained_models/RealESRGAN_x8.pth", realesrgan_runner)
}
cv2_interpolations = ["LANCZOS4", "CUBIC", "NEAREST"]
def get_available_enhancer_names():
available = []
for name, data in supported_enhancers.items():
path = os.path.join(os.path.abspath(os.path.dirname(__file__)), data[0])
if os.path.exists(path):
available.append(name)
return available
def load_face_enhancer_model(name='GFPGAN', device="cpu"):
assert name in get_available_enhancer_names() + cv2_interpolations, f"Face enhancer {name} unavailable."
if name in supported_enhancers.keys():
model_path, model_runner = supported_enhancers.get(name)
model_path = os.path.join(os.path.abspath(os.path.dirname(__file__)), model_path)
if name == 'CodeFormer':
model = CodeFormerEnhancer(model_path=model_path, device=device)
elif name == 'GFPGAN':
model = gfpgan.GFPGANer(model_path=model_path, upscale=1, device=device)
elif name == 'REAL-ESRGAN 2x':
model = RealESRGAN(device, scale=2)
model.load_weights(model_path, download=False)
elif name == 'REAL-ESRGAN 4x':
model = RealESRGAN(device, scale=4)
model.load_weights(model_path, download=False)
elif name == 'REAL-ESRGAN 8x':
model = RealESRGAN(device, scale=8)
model.load_weights(model_path, download=False)
elif name == 'LANCZOS4':
model = None
model_runner = lambda img, _: cv2.resize(img, (512,512), interpolation=cv2.INTER_LANCZOS4)
elif name == 'CUBIC':
model = None
model_runner = lambda img, _: cv2.resize(img, (512,512), interpolation=cv2.INTER_CUBIC)
elif name == 'NEAREST':
model = None
model_runner = lambda img, _: cv2.resize(img, (512,512), interpolation=cv2.INTER_NEAREST)
else:
model = None
return (model, model_runner)
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