#!/usr/bin/env python3 ''' You can download the Geometric Matching Module model from https://www.dropbox.com/s/tyhc73xa051grjp/cp_vton_gmm.onnx?dl=0 You can download the Try-On Module model from https://www.dropbox.com/s/q2x97ve2h53j66k/cp_vton_tom.onnx?dl=0 You can download the cloth segmentation model from https://www.dropbox.com/s/qag9vzambhhkvxr/lip_jppnet_384.pb?dl=0 You can find the OpenPose proto in opencv_extra/testdata/dnn/openpose_pose_coco.prototxt and get .caffemodel using opencv_extra/testdata/dnn/download_models.py ''' import argparse import os.path import numpy as np import cv2 as cv from numpy import linalg from common import findFile from human_parsing import parse_human backends = (cv.dnn.DNN_BACKEND_DEFAULT, cv.dnn.DNN_BACKEND_HALIDE, cv.dnn.DNN_BACKEND_INFERENCE_ENGINE, cv.dnn.DNN_BACKEND_OPENCV) targets = (cv.dnn.DNN_TARGET_CPU, cv.dnn.DNN_TARGET_OPENCL, cv.dnn.DNN_TARGET_OPENCL_FP16, cv.dnn.DNN_TARGET_MYRIAD) parser = argparse.ArgumentParser(description='Use this script to run virtial try-on using CP-VTON', formatter_class=argparse.ArgumentDefaultsHelpFormatter) parser.add_argument('--input_image', '-i', required=True, help='Path to image with person.') parser.add_argument('--input_cloth', '-c', required=True, help='Path to target cloth image') parser.add_argument('--gmm_model', '-gmm', default='cp_vton_gmm.onnx', help='Path to Geometric Matching Module .onnx model.') parser.add_argument('--tom_model', '-tom', default='cp_vton_tom.onnx', help='Path to Try-On Module .onnx model.') parser.add_argument('--segmentation_model', default='lip_jppnet_384.pb', help='Path to cloth segmentation .pb model.') parser.add_argument('--openpose_proto', default='openpose_pose_coco.prototxt', help='Path to OpenPose .prototxt model was trained on COCO dataset.') parser.add_argument('--openpose_model', default='openpose_pose_coco.caffemodel', help='Path to OpenPose .caffemodel model was trained on COCO dataset.') parser.add_argument('--backend', choices=backends, default=cv.dnn.DNN_BACKEND_DEFAULT, type=int, help="Choose one of computation backends: " "%d: automatically (by default), " "%d: Halide language (http://halide-lang.org/), " "%d: Intel's Deep Learning Inference Engine (https://software.intel.com/openvino-toolkit), " "%d: OpenCV implementation" % backends) parser.add_argument('--target', choices=targets, default=cv.dnn.DNN_TARGET_CPU, type=int, help='Choose one of target computation devices: ' '%d: CPU target (by default), ' '%d: OpenCL, ' '%d: OpenCL fp16 (half-float precision), ' '%d: VPU' % targets) args, _ = parser.parse_known_args() def get_pose_map(image, proto_path, model_path, backend, target, height=256, width=192): radius = 5 inp = cv.dnn.blobFromImage(image, 1.0 / 255, (width, height)) net = cv.dnn.readNet(proto_path, model_path) net.setPreferableBackend(backend) net.setPreferableTarget(target) net.setInput(inp) out = net.forward() threshold = 0.1 _, out_c, out_h, out_w = out.shape pose_map = np.zeros((height, width, out_c - 1)) # last label: Background for i in range(0, out.shape[1] - 1): heatMap = out[0, i, :, :] keypoint = np.full((height, width), -1) _, conf, _, point = cv.minMaxLoc(heatMap) x = width * point[0] // out_w y = height * point[1] // out_h if conf > threshold and x > 0 and y > 0: keypoint[y - radius:y + radius, x - radius:x + radius] = 1 pose_map[:, :, i] = keypoint pose_map = pose_map.transpose(2, 0, 1) return pose_map class BilinearFilter(object): """ PIL bilinear resize implementation image = image.resize((image_width // 16, image_height // 16), Image.BILINEAR) """ def _precompute_coeffs(self, inSize, outSize): filterscale = max(1.0, inSize / outSize) ksize = int(np.ceil(filterscale)) * 2 + 1 kk = np.zeros(shape=(outSize * ksize, ), dtype=np.float32) bounds = np.empty(shape=(outSize * 2, ), dtype=np.int32) centers = (np.arange(outSize) + 0.5) * filterscale + 0.5 bounds[::2] = np.where(centers - filterscale < 0, 0, centers - filterscale) bounds[1::2] = np.where(centers + filterscale > inSize, inSize, centers + filterscale) - bounds[::2] xmins = bounds[::2] - centers + 1 points = np.array([np.arange(row) + xmins[i] for i, row in enumerate(bounds[1::2])]) / filterscale for xx in range(0, outSize): point = points[xx] bilinear = np.where(point < 1.0, 1.0 - abs(point), 0.0) ww = np.sum(bilinear) kk[xx * ksize : xx * ksize + bilinear.size] = np.where(ww == 0.0, bilinear, bilinear / ww) return bounds, kk, ksize def _resample_horizontal(self, out, img, ksize, bounds, kk): for yy in range(0, out.shape[0]): for xx in range(0, out.shape[1]): xmin = bounds[xx * 2 + 0] xmax = bounds[xx * 2 + 1] k = kk[xx * ksize : xx * ksize + xmax] out[yy, xx] = np.round(np.sum(img[yy, xmin : xmin + xmax] * k)) def _resample_vertical(self, out, img, ksize, bounds, kk): for yy in range(0, out.shape[0]): ymin = bounds[yy * 2 + 0] ymax = bounds[yy * 2 + 1] k = kk[yy * ksize: yy * ksize + ymax] out[yy] = np.round(np.sum(img[ymin : ymin + ymax, 0:out.shape[1]] * k[:, np.newaxis], axis=0)) def imaging_resample(self, img, xsize, ysize): height, width, *args = img.shape bounds_horiz, kk_horiz, ksize_horiz = self._precompute_coeffs(width, xsize) bounds_vert, kk_vert, ksize_vert = self._precompute_coeffs(height, ysize) out_hor = np.empty((img.shape[0], xsize), dtype=np.uint8) self._resample_horizontal(out_hor, img, ksize_horiz, bounds_horiz, kk_horiz) out = np.empty((ysize, xsize), dtype=np.uint8) self._resample_vertical(out, out_hor, ksize_vert, bounds_vert, kk_vert) return out class CpVton(object): def __init__(self, gmm_model, tom_model, backend, target): super(CpVton, self).__init__() self.gmm_net = cv.dnn.readNet(gmm_model) self.tom_net = cv.dnn.readNet(tom_model) self.gmm_net.setPreferableBackend(backend) self.gmm_net.setPreferableTarget(target) self.tom_net.setPreferableBackend(backend) self.tom_net.setPreferableTarget(target) def prepare_agnostic(self, segm_image, input_image, pose_map, height=256, width=192): palette = { 'Background' : (0, 0, 0), 'Hat' : (128, 0, 0), 'Hair' : (255, 0, 0), 'Glove' : (0, 85, 0), 'Sunglasses' : (170, 0, 51), 'UpperClothes' : (255, 85, 0), 'Dress' : (0, 0, 85), 'Coat' : (0, 119, 221), 'Socks' : (85, 85, 0), 'Pants' : (0, 85, 85), 'Jumpsuits' : (85, 51, 0), 'Scarf' : (52, 86, 128), 'Skirt' : (0, 128, 0), 'Face' : (0, 0, 255), 'Left-arm' : (51, 170, 221), 'Right-arm' : (0, 255, 255), 'Left-leg' : (85, 255, 170), 'Right-leg' : (170, 255, 85), 'Left-shoe' : (255, 255, 0), 'Right-shoe' : (255, 170, 0) } color2label = {val: key for key, val in palette.items()} head_labels = ['Hat', 'Hair', 'Sunglasses', 'Face', 'Pants', 'Skirt'] segm_image = cv.cvtColor(segm_image, cv.COLOR_BGR2RGB) phead = np.zeros((1, height, width), dtype=np.float32) pose_shape = np.zeros((height, width), dtype=np.uint8) for r in range(height): for c in range(width): pixel = tuple(segm_image[r, c]) if tuple(pixel) in color2label: if color2label[pixel] in head_labels: phead[0, r, c] = 1 if color2label[pixel] != 'Background': pose_shape[r, c] = 255 input_image = cv.dnn.blobFromImage(input_image, 1.0 / 127.5, (width, height), mean=(127.5, 127.5, 127.5), swapRB=True) input_image = input_image.squeeze(0) img_head = input_image * phead - (1 - phead) downsample = BilinearFilter() down = downsample.imaging_resample(pose_shape, width // 16, height // 16) res_shape = cv.resize(down, (width, height), cv.INTER_LINEAR) res_shape = cv.dnn.blobFromImage(res_shape, 1.0 / 127.5, mean=(127.5, 127.5, 127.5), swapRB=True) res_shape = res_shape.squeeze(0) agnostic = np.concatenate((res_shape, img_head, pose_map), axis=0) agnostic = np.expand_dims(agnostic, axis=0) return agnostic.astype(np.float32) def get_warped_cloth(self, cloth_img, agnostic, height=256, width=192): cloth = cv.dnn.blobFromImage(cloth_img, 1.0 / 127.5, (width, height), mean=(127.5, 127.5, 127.5), swapRB=True) self.gmm_net.setInput(agnostic, "input.1") self.gmm_net.setInput(cloth, "input.18") theta = self.gmm_net.forward() grid = self._generate_grid(theta) warped_cloth = self._bilinear_sampler(cloth, grid).astype(np.float32) return warped_cloth def get_tryon(self, agnostic, warp_cloth): inp = np.concatenate([agnostic, warp_cloth], axis=1) self.tom_net.setInput(inp) out = self.tom_net.forward() p_rendered, m_composite = np.split(out, [3], axis=1) p_rendered = np.tanh(p_rendered) m_composite = 1 / (1 + np.exp(-m_composite)) p_tryon = warp_cloth * m_composite + p_rendered * (1 - m_composite) rgb_p_tryon = cv.cvtColor(p_tryon.squeeze(0).transpose(1, 2, 0), cv.COLOR_BGR2RGB) rgb_p_tryon = (rgb_p_tryon + 1) / 2 return rgb_p_tryon def _compute_L_inverse(self, X, Y): N = X.shape[0] Xmat = np.tile(X, (1, N)) Ymat = np.tile(Y, (1, N)) P_dist_squared = np.power(Xmat - Xmat.transpose(1, 0), 2) + np.power(Ymat - Ymat.transpose(1, 0), 2) P_dist_squared[P_dist_squared == 0] = 1 K = np.multiply(P_dist_squared, np.log(P_dist_squared)) O = np.ones([N, 1], dtype=np.float32) Z = np.zeros([3, 3], dtype=np.float32) P = np.concatenate([O, X, Y], axis=1) first = np.concatenate((K, P), axis=1) second = np.concatenate((P.transpose(1, 0), Z), axis=1) L = np.concatenate((first, second), axis=0) Li = linalg.inv(L) return Li def _prepare_to_transform(self, out_h=256, out_w=192, grid_size=5): grid = np.zeros([out_h, out_w, 3], dtype=np.float32) grid_X, grid_Y = np.meshgrid(np.linspace(-1, 1, out_w), np.linspace(-1, 1, out_h)) grid_X = np.expand_dims(np.expand_dims(grid_X, axis=0), axis=3) grid_Y = np.expand_dims(np.expand_dims(grid_Y, axis=0), axis=3) axis_coords = np.linspace(-1, 1, grid_size) N = grid_size ** 2 P_Y, P_X = np.meshgrid(axis_coords, axis_coords) P_X = np.reshape(P_X,(-1, 1)) P_Y = np.reshape(P_Y,(-1, 1)) P_X = np.expand_dims(np.expand_dims(np.expand_dims(P_X, axis=2), axis=3), axis=4).transpose(4, 1, 2, 3, 0) P_Y = np.expand_dims(np.expand_dims(np.expand_dims(P_Y, axis=2), axis=3), axis=4).transpose(4, 1, 2, 3, 0) return grid_X, grid_Y, N, P_X, P_Y def _expand_torch(self, X, shape): if len(X.shape) != len(shape): return X.flatten().reshape(shape) else: axis = [1 if src == dst else dst for src, dst in zip(X.shape, shape)] return np.tile(X, axis) def _apply_transformation(self, theta, points, N, P_X, P_Y): if len(theta.shape) == 2: theta = np.expand_dims(np.expand_dims(theta, axis=2), axis=3) batch_size = theta.shape[0] P_X_base = np.copy(P_X) P_Y_base = np.copy(P_Y) Li = self._compute_L_inverse(np.reshape(P_X, (N, -1)), np.reshape(P_Y, (N, -1))) Li = np.expand_dims(Li, axis=0) # split theta into point coordinates Q_X = np.squeeze(theta[:, :N, :, :], axis=3) Q_Y = np.squeeze(theta[:, N:, :, :], axis=3) Q_X += self._expand_torch(P_X_base, Q_X.shape) Q_Y += self._expand_torch(P_Y_base, Q_Y.shape) points_b = points.shape[0] points_h = points.shape[1] points_w = points.shape[2] P_X = self._expand_torch(P_X, (1, points_h, points_w, 1, N)) P_Y = self._expand_torch(P_Y, (1, points_h, points_w, 1, N)) W_X = self._expand_torch(Li[:,:N,:N], (batch_size, N, N)) @ Q_X W_Y = self._expand_torch(Li[:,:N,:N], (batch_size, N, N)) @ Q_Y W_X = np.expand_dims(np.expand_dims(W_X, axis=3), axis=4).transpose(0, 4, 2, 3, 1) W_X = np.repeat(W_X, points_h, axis=1) W_X = np.repeat(W_X, points_w, axis=2) W_Y = np.expand_dims(np.expand_dims(W_Y, axis=3), axis=4).transpose(0, 4, 2, 3, 1) W_Y = np.repeat(W_Y, points_h, axis=1) W_Y = np.repeat(W_Y, points_w, axis=2) A_X = self._expand_torch(Li[:, N:, :N], (batch_size, 3, N)) @ Q_X A_Y = self._expand_torch(Li[:, N:, :N], (batch_size, 3, N)) @ Q_Y A_X = np.expand_dims(np.expand_dims(A_X, axis=3), axis=4).transpose(0, 4, 2, 3, 1) A_X = np.repeat(A_X, points_h, axis=1) A_X = np.repeat(A_X, points_w, axis=2) A_Y = np.expand_dims(np.expand_dims(A_Y, axis=3), axis=4).transpose(0, 4, 2, 3, 1) A_Y = np.repeat(A_Y, points_h, axis=1) A_Y = np.repeat(A_Y, points_w, axis=2) points_X_for_summation = np.expand_dims(np.expand_dims(points[:, :, :, 0], axis=3), axis=4) points_X_for_summation = self._expand_torch(points_X_for_summation, points[:, :, :, 0].shape + (1, N)) points_Y_for_summation = np.expand_dims(np.expand_dims(points[:, :, :, 1], axis=3), axis=4) points_Y_for_summation = self._expand_torch(points_Y_for_summation, points[:, :, :, 0].shape + (1, N)) if points_b == 1: delta_X = points_X_for_summation - P_X delta_Y = points_Y_for_summation - P_Y else: delta_X = points_X_for_summation - self._expand_torch(P_X, points_X_for_summation.shape) delta_Y = points_Y_for_summation - self._expand_torch(P_Y, points_Y_for_summation.shape) dist_squared = np.power(delta_X, 2) + np.power(delta_Y, 2) dist_squared[dist_squared == 0] = 1 U = np.multiply(dist_squared, np.log(dist_squared)) points_X_batch = np.expand_dims(points[:,:,:,0], axis=3) points_Y_batch = np.expand_dims(points[:,:,:,1], axis=3) if points_b == 1: points_X_batch = self._expand_torch(points_X_batch, (batch_size, ) + points_X_batch.shape[1:]) points_Y_batch = self._expand_torch(points_Y_batch, (batch_size, ) + points_Y_batch.shape[1:]) points_X_prime = A_X[:,:,:,:,0]+ \ np.multiply(A_X[:,:,:,:,1], points_X_batch) + \ np.multiply(A_X[:,:,:,:,2], points_Y_batch) + \ np.sum(np.multiply(W_X, self._expand_torch(U, W_X.shape)), 4) points_Y_prime = A_Y[:,:,:,:,0]+ \ np.multiply(A_Y[:,:,:,:,1], points_X_batch) + \ np.multiply(A_Y[:,:,:,:,2], points_Y_batch) + \ np.sum(np.multiply(W_Y, self._expand_torch(U, W_Y.shape)), 4) return np.concatenate((points_X_prime, points_Y_prime), 3) def _generate_grid(self, theta): grid_X, grid_Y, N, P_X, P_Y = self._prepare_to_transform() warped_grid = self._apply_transformation(theta, np.concatenate((grid_X, grid_Y), axis=3), N, P_X, P_Y) return warped_grid def _bilinear_sampler(self, img, grid): x, y = grid[:,:,:,0], grid[:,:,:,1] H = img.shape[2] W = img.shape[3] max_y = H - 1 max_x = W - 1 # rescale x and y to [0, W-1/H-1] x = 0.5 * (x + 1.0) * (max_x - 1) y = 0.5 * (y + 1.0) * (max_y - 1) # grab 4 nearest corner points for each (x_i, y_i) x0 = np.floor(x).astype(int) x1 = x0 + 1 y0 = np.floor(y).astype(int) y1 = y0 + 1 # calculate deltas wa = (x1 - x) * (y1 - y) wb = (x1 - x) * (y - y0) wc = (x - x0) * (y1 - y) wd = (x - x0) * (y - y0) # clip to range [0, H-1/W-1] to not violate img boundaries x0 = np.clip(x0, 0, max_x) x1 = np.clip(x1, 0, max_x) y0 = np.clip(y0, 0, max_y) y1 = np.clip(y1, 0, max_y) # get pixel value at corner coords img = img.reshape(-1, H, W) Ia = img[:, y0, x0].swapaxes(0, 1) Ib = img[:, y1, x0].swapaxes(0, 1) Ic = img[:, y0, x1].swapaxes(0, 1) Id = img[:, y1, x1].swapaxes(0, 1) wa = np.expand_dims(wa, axis=0) wb = np.expand_dims(wb, axis=0) wc = np.expand_dims(wc, axis=0) wd = np.expand_dims(wd, axis=0) # compute output out = wa*Ia + wb*Ib + wc*Ic + wd*Id return out class CorrelationLayer(object): def __init__(self, params, blobs): super(CorrelationLayer, self).__init__() def getMemoryShapes(self, inputs): fetureAShape = inputs[0] b, c, h, w = fetureAShape return [[b, h * w, h, w]] def forward(self, inputs): feature_A, feature_B = inputs b, c, h, w = feature_A.shape feature_A = feature_A.transpose(0, 1, 3, 2) feature_A = np.reshape(feature_A, (b, c, h * w)) feature_B = np.reshape(feature_B, (b, c, h * w)) feature_B = feature_B.transpose(0, 2, 1) feature_mul = feature_B @ feature_A feature_mul= np.reshape(feature_mul, (b, h, w, h * w)) feature_mul = feature_mul.transpose(0, 1, 3, 2) correlation_tensor = feature_mul.transpose(0, 2, 1, 3) correlation_tensor = np.ascontiguousarray(correlation_tensor) return [correlation_tensor] if __name__ == "__main__": if not os.path.isfile(args.gmm_model): raise OSError("GMM model not exist") if not os.path.isfile(args.tom_model): raise OSError("TOM model not exist") if not os.path.isfile(args.segmentation_model): raise OSError("Segmentation model not exist") if not os.path.isfile(findFile(args.openpose_proto)): raise OSError("OpenPose proto not exist") if not os.path.isfile(findFile(args.openpose_model)): raise OSError("OpenPose model not exist") person_img = cv.imread(args.input_image) ratio = 256 / 192 inp_h, inp_w, _ = person_img.shape current_ratio = inp_h / inp_w if current_ratio > ratio: center_h = inp_h // 2 out_h = inp_w * ratio start = int(center_h - out_h // 2) end = int(center_h + out_h // 2) person_img = person_img[start:end, ...] else: center_w = inp_w // 2 out_w = inp_h / ratio start = int(center_w - out_w // 2) end = int(center_w + out_w // 2) person_img = person_img[:, start:end, :] cloth_img = cv.imread(args.input_cloth) pose = get_pose_map(person_img, findFile(args.openpose_proto), findFile(args.openpose_model), args.backend, args.target) segm_image = parse_human(person_img, args.segmentation_model) segm_image = cv.resize(segm_image, (192, 256), cv.INTER_LINEAR) cv.dnn_registerLayer('Correlation', CorrelationLayer) model = CpVton(args.gmm_model, args.tom_model, args.backend, args.target) agnostic = model.prepare_agnostic(segm_image, person_img, pose) warped_cloth = model.get_warped_cloth(cloth_img, agnostic) output = model.get_tryon(agnostic, warped_cloth) cv.dnn_unregisterLayer('Correlation') winName = 'Virtual Try-On' cv.namedWindow(winName, cv.WINDOW_AUTOSIZE) cv.imshow(winName, output) cv.waitKey()