# # Copyright (C) 2023, Inria # GRAPHDECO research group, https://team.inria.fr/graphdeco # All rights reserved. # # This software is free for non-commercial, research and evaluation use # under the terms of the LICENSE.md file. # # For inquiries contact george.drettakis@inria.fr # import numpy as np import random import os import torch from random import randint from utils.loss_utils import l1_loss, ssim, l2_loss, lpips_loss from gaussian_renderer import render, network_gui import sys from scene import Scene, GaussianModel from utils.general_utils import safe_state import uuid from tqdm import tqdm from utils.image_utils import psnr from argparse import ArgumentParser, Namespace from arguments import ModelParams, PipelineParams, OptimizationParams, ModelHiddenParams from torch.utils.data import DataLoader from utils.timer import Timer import lpips from utils.scene_utils import render_training_image from time import time to8b = lambda x : (255*np.clip(x.cpu().numpy(),0,1)).astype(np.uint8) try: from torch.utils.tensorboard import SummaryWriter TENSORBOARD_FOUND = True except ImportError: TENSORBOARD_FOUND = False def scene_reconstruction(dataset, opt, hyper, pipe, testing_iterations, saving_iterations, checkpoint_iterations, checkpoint, debug_from, gaussians, scene, stage, tb_writer, train_iter,timer): first_iter = 0 gaussians.training_setup(opt) if checkpoint: (model_params, first_iter) = torch.load(checkpoint) gaussians.restore(model_params, opt) bg_color = [1, 1, 1] if dataset.white_background else [0, 0, 0] background = torch.tensor(bg_color, dtype=torch.float32, device="cuda") iter_start = torch.cuda.Event(enable_timing = True) iter_end = torch.cuda.Event(enable_timing = True) viewpoint_stack = None ema_loss_for_log = 0.0 ema_psnr_for_log = 0.0 final_iter = train_iter progress_bar = tqdm(range(first_iter, final_iter), desc="Training progress") first_iter += 1 lpips_model = lpips.LPIPS(net="alex").cuda() video_cams = scene.getVideoCameras() for iteration in range(first_iter, final_iter+1): if network_gui.conn == None: network_gui.try_connect() while network_gui.conn != None: try: net_image_bytes = None custom_cam, do_training, pipe.convert_SHs_python, pipe.compute_cov3D_python, keep_alive, scaling_modifer, ts = network_gui.receive() if custom_cam != None: net_image = render(custom_cam, gaussians, pipe, background, scaling_modifer, stage="stage")["render"] net_image_bytes = memoryview((torch.clamp(net_image, min=0, max=1.0) * 255).byte().permute(1, 2, 0).contiguous().cpu().numpy()) network_gui.send(net_image_bytes, dataset.source_path) if do_training and ((iteration < int(opt.iterations)) or not keep_alive): break except Exception as e: network_gui.conn = None iter_start.record() gaussians.update_learning_rate(iteration) # Every 1000 its we increase the levels of SH up to a maximum degree if iteration % 1000 == 0: gaussians.oneupSHdegree() # Pick a random Camera if not viewpoint_stack: viewpoint_stack = scene.getTrainCameras() batch_size = 1 viewpoint_stack_loader = DataLoader(viewpoint_stack, batch_size=batch_size,shuffle=True,num_workers=32,collate_fn=list) loader = iter(viewpoint_stack_loader) if opt.dataloader: try: viewpoint_cams = next(loader) except StopIteration: print("reset dataloader") batch_size = 1 loader = iter(viewpoint_stack_loader) else: idx = randint(0, len(viewpoint_stack)-1) viewpoint_cams = [viewpoint_stack[idx]] # Render if (iteration - 1) == debug_from: pipe.debug = True images = [] gt_images = [] radii_list = [] visibility_filter_list = [] viewspace_point_tensor_list = [] for viewpoint_cam in viewpoint_cams: render_pkg = render(viewpoint_cam, gaussians, pipe, background, stage=stage) image, viewspace_point_tensor, visibility_filter, radii = render_pkg["render"], render_pkg["viewspace_points"], render_pkg["visibility_filter"], render_pkg["radii"] images.append(image.unsqueeze(0)) gt_image = viewpoint_cam.original_image.cuda() gt_images.append(gt_image.unsqueeze(0)) radii_list.append(radii.unsqueeze(0)) visibility_filter_list.append(visibility_filter.unsqueeze(0)) viewspace_point_tensor_list.append(viewspace_point_tensor) radii = torch.cat(radii_list,0).max(dim=0).values visibility_filter = torch.cat(visibility_filter_list).any(dim=0) image_tensor = torch.cat(images,0) gt_image_tensor = torch.cat(gt_images,0) # Loss Ll1 = l1_loss(image_tensor, gt_image_tensor) # Ll1 = l2_loss(image, gt_image) psnr_ = psnr(image_tensor, gt_image_tensor).mean().double() # norm loss = Ll1 if stage == "fine" and hyper.time_smoothness_weight != 0: # tv_loss = 0 tv_loss = gaussians.compute_regulation(hyper.time_smoothness_weight, hyper.plane_tv_weight, hyper.l1_time_planes) loss += tv_loss if opt.lambda_dssim != 0: ssim_loss = ssim(image_tensor,gt_image_tensor) loss += opt.lambda_dssim * (1.0-ssim_loss) if opt.lambda_lpips !=0: lpipsloss = lpips_loss(image_tensor,gt_image_tensor,lpips_model) loss += opt.lambda_lpips * lpipsloss loss.backward() viewspace_point_tensor_grad = torch.zeros_like(viewspace_point_tensor) for idx in range(0, len(viewspace_point_tensor_list)): viewspace_point_tensor_grad = viewspace_point_tensor_grad + viewspace_point_tensor_list[idx].grad iter_end.record() with torch.no_grad(): # Progress bar ema_loss_for_log = 0.4 * loss.item() + 0.6 * ema_loss_for_log ema_psnr_for_log = 0.4 * psnr_ + 0.6 * ema_psnr_for_log total_point = gaussians._xyz.shape[0] if iteration % 10 == 0: progress_bar.set_postfix({"Loss": f"{ema_loss_for_log:.{7}f}", "psnr": f"{psnr_:.{2}f}", "point":f"{total_point}"}) progress_bar.update(10) if iteration == opt.iterations: progress_bar.close() # Log and save timer.pause() training_report(tb_writer, iteration, Ll1, loss, l1_loss, iter_start.elapsed_time(iter_end), testing_iterations, scene, render, [pipe, background], stage) if (iteration in saving_iterations): print("\n[ITER {}] Saving Gaussians".format(iteration)) scene.save(iteration, stage) if dataset.render_process: if (iteration < 1000 and iteration % 10 == 1) \ or (iteration < 3000 and iteration % 50 == 1) \ or (iteration < 10000 and iteration % 100 == 1) \ or (iteration < 60000 and iteration % 100 ==1): render_training_image(scene, gaussians, video_cams, render, pipe, background, stage, iteration-1,timer.get_elapsed_time()) # total_images.append(to8b(temp_image).transpose(1,2,0)) timer.start() # Densification if iteration < opt.densify_until_iter : # Keep track of max radii in image-space for pruning gaussians.max_radii2D[visibility_filter] = torch.max(gaussians.max_radii2D[visibility_filter], radii[visibility_filter]) gaussians.add_densification_stats(viewspace_point_tensor_grad, visibility_filter) if stage == "coarse": opacity_threshold = opt.opacity_threshold_coarse densify_threshold = opt.densify_grad_threshold_coarse else: opacity_threshold = opt.opacity_threshold_fine_init - iteration*(opt.opacity_threshold_fine_init - opt.opacity_threshold_fine_after)/(opt.densify_until_iter) densify_threshold = opt.densify_grad_threshold_fine_init - iteration*(opt.densify_grad_threshold_fine_init - opt.densify_grad_threshold_after)/(opt.densify_until_iter ) if iteration > opt.densify_from_iter and iteration % opt.densification_interval == 0 : size_threshold = 20 if iteration > opt.opacity_reset_interval else None gaussians.densify(densify_threshold, opacity_threshold, scene.cameras_extent, size_threshold) if iteration > opt.pruning_from_iter and iteration % opt.pruning_interval == 0: size_threshold = 20 if iteration > opt.opacity_reset_interval else None gaussians.prune(densify_threshold, opacity_threshold, scene.cameras_extent, size_threshold) if iteration % opt.opacity_reset_interval == 0 or (dataset.white_background and iteration == opt.densify_from_iter): print("reset opacity") gaussians.reset_opacity() # Optimizer step if iteration < opt.iterations: gaussians.optimizer.step() gaussians.optimizer.zero_grad(set_to_none = True) if (iteration in checkpoint_iterations): print("\n[ITER {}] Saving Checkpoint".format(iteration)) torch.save((gaussians.capture(), iteration), scene.model_path + "/chkpnt" + str(iteration) + ".pth") def training(dataset, hyper, opt, pipe, testing_iterations, saving_iterations, checkpoint_iterations, checkpoint, debug_from, expname): # first_iter = 0 tb_writer = prepare_output_and_logger(expname) gaussians = GaussianModel(dataset.sh_degree, hyper) dataset.model_path = args.model_path timer = Timer() scene = Scene(dataset, gaussians, load_coarse=None) timer.start() scene_reconstruction(dataset, opt, hyper, pipe, testing_iterations, saving_iterations, checkpoint_iterations, checkpoint, debug_from, gaussians, scene, "coarse", tb_writer, opt.coarse_iterations,timer) scene_reconstruction(dataset, opt, hyper, pipe, testing_iterations, saving_iterations, checkpoint_iterations, checkpoint, debug_from, gaussians, scene, "fine", tb_writer, opt.iterations,timer) def prepare_output_and_logger(expname): if not args.model_path: # if os.getenv('OAR_JOB_ID'): # unique_str=os.getenv('OAR_JOB_ID') # else: # unique_str = str(uuid.uuid4()) unique_str = expname args.model_path = os.path.join("./output/", unique_str) # Set up output folder print("Output folder: {}".format(args.model_path)) os.makedirs(args.model_path, exist_ok = True) with open(os.path.join(args.model_path, "cfg_args"), 'w') as cfg_log_f: cfg_log_f.write(str(Namespace(**vars(args)))) # Create Tensorboard writer tb_writer = None if TENSORBOARD_FOUND: tb_writer = SummaryWriter(args.model_path) else: print("Tensorboard not available: not logging progress") return tb_writer def training_report(tb_writer, iteration, Ll1, loss, l1_loss, elapsed, testing_iterations, scene : Scene, renderFunc, renderArgs, stage): if tb_writer: tb_writer.add_scalar(f'{stage}/train_loss_patches/l1_loss', Ll1.item(), iteration) tb_writer.add_scalar(f'{stage}/train_loss_patchestotal_loss', loss.item(), iteration) tb_writer.add_scalar(f'{stage}/iter_time', elapsed, iteration) # Report test and samples of training set if iteration in testing_iterations: torch.cuda.empty_cache() validation_configs = ({'name': 'test', 'cameras' : [scene.getTestCameras()[idx % len(scene.getTestCameras())] for idx in range(10, 5000, 299)]}, {'name': 'train', 'cameras' : [scene.getTrainCameras()[idx % len(scene.getTrainCameras())] for idx in range(10, 5000, 299)]}) for config in validation_configs: if config['cameras'] and len(config['cameras']) > 0: l1_test = 0.0 psnr_test = 0.0 for idx, viewpoint in enumerate(config['cameras']): image = torch.clamp(renderFunc(viewpoint, scene.gaussians,stage=stage, *renderArgs)["render"], 0.0, 1.0) gt_image = torch.clamp(viewpoint.original_image.to("cuda"), 0.0, 1.0) if tb_writer and (idx < 5): tb_writer.add_images(stage + "/"+config['name'] + "_view_{}/render".format(viewpoint.image_name), image[None], global_step=iteration) if iteration == testing_iterations[0]: tb_writer.add_images(stage + "/"+config['name'] + "_view_{}/ground_truth".format(viewpoint.image_name), gt_image[None], global_step=iteration) l1_test += l1_loss(image, gt_image).mean().double() psnr_test += psnr(image, gt_image).mean().double() psnr_test /= len(config['cameras']) l1_test /= len(config['cameras']) print("\n[ITER {}] Evaluating {}: L1 {} PSNR {}".format(iteration, config['name'], l1_test, psnr_test)) if tb_writer: tb_writer.add_scalar(stage + "/"+config['name'] + '/loss_viewpoint - l1_loss', l1_test, iteration) tb_writer.add_scalar(stage+"/"+config['name'] + '/loss_viewpoint - psnr', psnr_test, iteration) if tb_writer: tb_writer.add_histogram(f"{stage}/scene/opacity_histogram", scene.gaussians.get_opacity, iteration) tb_writer.add_scalar(f'{stage}/total_points', scene.gaussians.get_xyz.shape[0], iteration) tb_writer.add_scalar(f'{stage}/deformation_rate', scene.gaussians._deformation_table.sum()/scene.gaussians.get_xyz.shape[0], iteration) tb_writer.add_histogram(f"{stage}/scene/motion_histogram", scene.gaussians._deformation_accum.mean(dim=-1)/100, iteration,max_bins=500) torch.cuda.empty_cache() def setup_seed(seed): torch.manual_seed(seed) torch.cuda.manual_seed_all(seed) np.random.seed(seed) random.seed(seed) torch.backends.cudnn.deterministic = True if __name__ == "__main__": # Set up command line argument parser # torch.set_default_tensor_type('torch.FloatTensor') torch.cuda.empty_cache() parser = ArgumentParser(description="Training script parameters") setup_seed(6666) lp = ModelParams(parser) op = OptimizationParams(parser) pp = PipelineParams(parser) hp = ModelHiddenParams(parser) parser.add_argument('--ip', type=str, default="127.0.0.1") parser.add_argument('--port', type=int, default=6009) parser.add_argument('--debug_from', type=int, default=-1) parser.add_argument('--detect_anomaly', action='store_true', default=False) parser.add_argument("--test_iterations", nargs="+", type=int, default=[i*500 for i in range(0,120)]) parser.add_argument("--save_iterations", nargs="+", type=int, default=[2000, 3000, 7_000, 8000, 9000, 14000, 20000, 30_000,45000,60000]) parser.add_argument("--quiet", action="store_true") parser.add_argument("--checkpoint_iterations", nargs="+", type=int, default=[]) parser.add_argument("--start_checkpoint", type=str, default = None) parser.add_argument("--expname", type=str, default = "") parser.add_argument("--configs", type=str, default = "") args = parser.parse_args(sys.argv[1:]) args.save_iterations.append(args.iterations) if args.configs: import mmcv from utils.params_utils import merge_hparams config = mmcv.Config.fromfile(args.configs) args = merge_hparams(args, config) print("Optimizing " + args.model_path) # Initialize system state (RNG) safe_state(args.quiet) # Start GUI server, configure and run training network_gui.init(args.ip, args.port) torch.autograd.set_detect_anomaly(args.detect_anomaly) training(lp.extract(args), hp.extract(args), op.extract(args), pp.extract(args), args.test_iterations, args.save_iterations, args.checkpoint_iterations, args.start_checkpoint, args.debug_from, args.expname) # All done print("\nTraining complete.")