| import time |
| import numpy as np |
| import onnxruntime |
| import cv2 |
| import onnx |
| from onnx import numpy_helper |
| from ..utils import face_align |
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| class INSwapper(): |
| def __init__(self, model_file=None, session=None): |
| self.model_file = model_file |
| self.session = session |
| model = onnx.load(self.model_file) |
| graph = model.graph |
| self.emap = numpy_helper.to_array(graph.initializer[-1]) |
| self.input_mean = 0.0 |
| self.input_std = 255.0 |
| |
| if self.session is None: |
| self.session = onnxruntime.InferenceSession(self.model_file, None) |
| inputs = self.session.get_inputs() |
| self.input_names = [] |
| for inp in inputs: |
| self.input_names.append(inp.name) |
| outputs = self.session.get_outputs() |
| output_names = [] |
| for out in outputs: |
| output_names.append(out.name) |
| self.output_names = output_names |
| assert len(self.output_names)==1 |
| output_shape = outputs[0].shape |
| input_cfg = inputs[0] |
| input_shape = input_cfg.shape |
| self.input_shape = input_shape |
| |
| self.input_size = tuple(input_shape[2:4][::-1]) |
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| def forward(self, img, latent): |
| img = (img - self.input_mean) / self.input_std |
| pred = self.session.run(self.output_names, {self.input_names[0]: img, self.input_names[1]: latent})[0] |
| return pred |
|
|
| def get(self, img, target_face, source_face, paste_back=True): |
| face_mask = np.zeros((img.shape[0], img.shape[1]), np.uint8) |
| cv2.fillPoly(face_mask, np.array([target_face.landmark_2d_106[[1,9,10,11,12,13,14,15,16,2,3,4,5,6,7,8,0,24,23,22,21,20,19,18,32,31,30,29,28,27,26,25,17,101,105,104,103,51,49,48,43]].astype('int64')]), 1) |
| aimg, M = face_align.norm_crop2(img, target_face.kps, self.input_size[0]) |
| blob = cv2.dnn.blobFromImage(aimg, 1.0 / self.input_std, self.input_size, |
| (self.input_mean, self.input_mean, self.input_mean), swapRB=True) |
| latent = source_face.normed_embedding.reshape((1,-1)) |
| latent = np.dot(latent, self.emap) |
| latent /= np.linalg.norm(latent) |
| pred = self.session.run(self.output_names, {self.input_names[0]: blob, self.input_names[1]: latent})[0] |
| |
| img_fake = pred.transpose((0,2,3,1))[0] |
| bgr_fake = np.clip(255 * img_fake, 0, 255).astype(np.uint8)[:,:,::-1] |
| if not paste_back: |
| return bgr_fake, M |
| else: |
| target_img = img |
| fake_diff = bgr_fake.astype(np.float32) - aimg.astype(np.float32) |
| fake_diff = np.abs(fake_diff).mean(axis=2) |
| fake_diff[:2,:] = 0 |
| fake_diff[-2:,:] = 0 |
| fake_diff[:,:2] = 0 |
| fake_diff[:,-2:] = 0 |
| IM = cv2.invertAffineTransform(M) |
| img_white = np.full((aimg.shape[0],aimg.shape[1]), 255, dtype=np.float32) |
| bgr_fake = cv2.warpAffine(bgr_fake, IM, (target_img.shape[1], target_img.shape[0]), borderValue=0.0) |
| img_white = cv2.warpAffine(img_white, IM, (target_img.shape[1], target_img.shape[0]), borderValue=0.0) |
| fake_diff = cv2.warpAffine(fake_diff, IM, (target_img.shape[1], target_img.shape[0]), borderValue=0.0) |
| img_white[img_white>20] = 255 |
| fthresh = 10 |
| fake_diff[fake_diff<fthresh] = 0 |
| fake_diff[fake_diff>=fthresh] = 255 |
| img_mask = img_white |
| mask_h_inds, mask_w_inds = np.where(img_mask==255) |
| mask_h = np.max(mask_h_inds) - np.min(mask_h_inds) |
| mask_w = np.max(mask_w_inds) - np.min(mask_w_inds) |
| mask_size = int(np.sqrt(mask_h*mask_w)) |
| k = max(mask_size//10, 10) |
| |
| |
| kernel = np.ones((k,k),np.uint8) |
| img_mask = cv2.erode(img_mask,kernel,iterations = 1) |
| kernel = np.ones((2,2),np.uint8) |
| fake_diff = cv2.dilate(fake_diff,kernel,iterations = 1) |
|
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| face_mask = cv2.erode(face_mask,np.ones((11,11),np.uint8),iterations = 1) |
| fake_diff[face_mask==1] = 255 |
|
|
| k = max(mask_size//20, 5) |
| |
| |
| kernel_size = (k, k) |
| blur_size = tuple(2*i+1 for i in kernel_size) |
| img_mask = cv2.GaussianBlur(img_mask, blur_size, 0) |
| k = 5 |
| kernel_size = (k, k) |
| blur_size = tuple(2*i+1 for i in kernel_size) |
| fake_diff = cv2.blur(fake_diff, (11,11), 0) |
| |
| |
| |
| img_mask /= 255 |
| fake_diff /= 255 |
| |
| img_mask = img_mask*fake_diff |
| img_mask = np.reshape(img_mask, [img_mask.shape[0],img_mask.shape[1],1]) |
| fake_merged = img_mask * bgr_fake + (1-img_mask) * target_img.astype(np.float32) |
| fake_merged = fake_merged.astype(np.uint8) |
| return fake_merged |
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|
