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| import os | |
| import cv2 | |
| import imageio | |
| import numpy as np | |
| import open3d as o3d | |
| import os.path as osp | |
| import matplotlib.pyplot as plt | |
| import matplotlib.colors as mcolors | |
| import open3d as o3d | |
| import os | |
| import numpy as np | |
| import imageio | |
| import os.path as osp | |
| def render_frames(o3d_geometry, camera_all, output_dir, save_video=True, save_camera=True): | |
| vis = o3d.visualization.Visualizer() | |
| w, h = camera_all[0].intrinsic.width, camera_all[0].intrinsic.height | |
| vis.create_window(width=w, height=h) | |
| render_frame_path = os.path.join(output_dir, 'render_frames') | |
| render_camera_path = os.path.join(output_dir, 'render_cameras') | |
| os.makedirs(render_frame_path, exist_ok=True) | |
| os.makedirs(render_camera_path, exist_ok=True) | |
| video_path = os.path.join(output_dir, 'render_frame.mp4') | |
| if save_video: | |
| writer = imageio.get_writer(video_path, fps=10) | |
| vis.add_geometry(o3d_geometry) | |
| for i, camera_params in enumerate(camera_all): | |
| if camera_params is None: | |
| continue | |
| ctr = vis.get_view_control() | |
| ctr.convert_from_pinhole_camera_parameters(camera_params, True) | |
| if save_camera: | |
| o3d.io.write_pinhole_camera_parameters(os.path.join(render_camera_path, f'camera_{i:03d}.json'), | |
| camera_params) | |
| opt = vis.get_render_option() | |
| opt.point_size = 1 | |
| opt.background_color = np.array([0, 0, 0]) | |
| vis.poll_events() | |
| vis.update_renderer() | |
| image = vis.capture_screen_float_buffer(do_render=True) | |
| image_uint8 = (np.asarray(image) * 255).astype(np.uint8) | |
| frame_filename = f'frame_{i:03d}.png' | |
| imageio.imwrite(osp.join(render_frame_path, frame_filename), image_uint8) | |
| if save_video: | |
| writer.append_data(image_uint8) | |
| if save_video: | |
| writer.close() | |
| vis.destroy_window() | |
| return video_path | |
| def find_render_cam(pcd): | |
| last_camera_params = None | |
| def print_camera_pose(vis): | |
| nonlocal last_camera_params | |
| ctr = vis.get_view_control() | |
| camera_params = ctr.convert_to_pinhole_camera_parameters() | |
| last_camera_params = camera_params | |
| print("Intrinsic matrix:") | |
| print(camera_params.intrinsic.intrinsic_matrix) | |
| print("\nExtrinsic matrix:") | |
| print(camera_params.extrinsic) | |
| return False | |
| vis = o3d.visualization.VisualizerWithKeyCallback() | |
| vis.create_window(width=1920, height=1080) | |
| vis.add_geometry(pcd) | |
| opt = vis.get_render_option() | |
| opt.point_size = 1 | |
| opt.background_color = np.array([0, 0, 0]) | |
| vis.register_key_callback(32, print_camera_pose) | |
| while vis.poll_events(): | |
| vis.update_renderer() | |
| vis.destroy_window() | |
| return last_camera_params | |
| def vis_pred_and_imgs(pts_all, save_path, images_all=None, conf_all=None, save_video=True): | |
| # Normalization | |
| min_val = pts_all.min(axis=(0, 1, 2), keepdims=True) | |
| max_val = pts_all.max(axis=(0, 1, 2), keepdims=True) | |
| pts_all = (pts_all - min_val) / (max_val - min_val) | |
| pts_save_path = osp.join(save_path, 'pts') | |
| os.makedirs(pts_save_path, exist_ok=True) | |
| if images_all is not None: | |
| images_save_path = osp.join(save_path, 'imgs') | |
| os.makedirs(images_save_path, exist_ok=True) | |
| if conf_all is not None: | |
| conf_save_path = osp.join(save_path, 'confs') | |
| os.makedirs(conf_save_path, exist_ok=True) | |
| if save_video: | |
| pts_video_path = osp.join(save_path, 'pts.mp4') | |
| pts_writer = imageio.get_writer(pts_video_path, fps=10) | |
| if images_all is not None: | |
| imgs_video_path = osp.join(save_path, 'imgs.mp4') | |
| imgs_writer = imageio.get_writer(imgs_video_path, fps=10) | |
| if conf_all is not None: | |
| conf_video_path = osp.join(save_path, 'confs.mp4') | |
| conf_writer = imageio.get_writer(conf_video_path, fps=10) | |
| for frame_id in range(pts_all.shape[0]): | |
| pt_vis = pts_all[frame_id].astype(np.float32) | |
| pt_vis_rgb = mcolors.hsv_to_rgb(1-pt_vis) | |
| pt_vis_rgb_uint8 = (pt_vis_rgb * 255).astype(np.uint8) | |
| plt.imsave(osp.join(pts_save_path, f'pts_{frame_id:04d}.png'), pt_vis_rgb_uint8) | |
| if save_video: | |
| pts_writer.append_data(pt_vis_rgb_uint8) | |
| if images_all is not None: | |
| image = images_all[frame_id] | |
| image_uint8 = (image * 255).astype(np.uint8) | |
| imageio.imwrite(osp.join(images_save_path, f'img_{frame_id:04d}.png'), image_uint8) | |
| if save_video: | |
| imgs_writer.append_data(image_uint8) | |
| if conf_all is not None: | |
| conf_image = plt.cm.jet(conf_all[frame_id]) | |
| conf_image_uint8 = (conf_image * 255).astype(np.uint8) | |
| plt.imsave(osp.join(conf_save_path, f'conf_{frame_id:04d}.png'), conf_image_uint8) | |
| if save_video: | |
| conf_writer.append_data(conf_image_uint8) | |
| if save_video: | |
| pts_writer.close() | |
| if images_all is not None: | |
| imgs_writer.close() | |
| if conf_all is not None: | |
| conf_writer.close() | |