# Description: This file contains the handcrafted solution for the task of wireframe reconstruction import io from collections import defaultdict from typing import Tuple, List import cv2 import hoho import numpy as np import scipy.interpolate as si from PIL import Image as PImage from hoho.color_mappings import gestalt_color_mapping from hoho.read_write_colmap import read_cameras_binary, read_images_binary, read_points3D_binary from scipy.spatial import KDTree from scipy.spatial.distance import cdist from sklearn.cluster import DBSCAN from scipy.spatial import cKDTree from enum import Enum apex_color = gestalt_color_mapping["apex"] eave_end_point = gestalt_color_mapping["eave_end_point"] flashing_end_point = gestalt_color_mapping["flashing_end_point"] apex_color, eave_end_point, flashing_end_point = [np.array(i) for i in [apex_color, eave_end_point, flashing_end_point]] unclassified = np.array([(215, 62, 138)]) line_classes = ['eave', 'ridge', 'rake', 'valley'] class VertexType(Enum): APEX = 0 EAVE_END_POINT = 1 class NearestNDInterpolatorWithThreshold(si.NearestNDInterpolator): def __init__(self, points, values, max_distance): super().__init__(points, values) self.max_distance = max_distance self.tree = cKDTree(points) def __call__(self, *args): # Convert the input to a 2D array of query points query_points = np.array(args).T distances, indices = self.tree.query(query_points, k=5, distance_upper_bound=self.max_distance) # valid_mask = distances <= self.max_distance # print(indices) # print(distances) # distances = np.mean(distances, axis=1) # print(indices) # print(self.values)# print(distances) found_mask = indices != len(self.values) temp_values = np.concatenate([self.values, [0]]) values = temp_values[indices] # values[~found_mask] = 0 values = np.sum(values, axis=1) found_mask_sum = np.sum(found_mask, axis=1) found_mask = found_mask_sum != 0 values[found_mask] /= found_mask_sum[found_mask] values[~found_mask] = np.nan # print(values) # np.ma.masked_where(indices, found_mask) # print(self.values[indices[found_mask]]) # values[found_mask] = # print(values) return values.T def empty_solution(): '''Return a minimal valid solution, i.e. 2 vertices and 1 edge.''' return np.zeros((2, 3)), [(0, 1)] def convert_entry_to_human_readable(entry): out = {} already_good = {'__key__', 'wf_vertices', 'wf_edges', 'edge_semantics', 'mesh_vertices', 'mesh_faces', 'face_semantics', 'K', 'R', 't'} for k, v in entry.items(): if k in already_good: out[k] = v continue match k: case 'points3d': out[k] = read_points3D_binary(fid=io.BytesIO(v)) case 'cameras': out[k] = read_cameras_binary(fid=io.BytesIO(v)) case 'images': out[k] = read_images_binary(fid=io.BytesIO(v)) case 'ade20k' | 'gestalt': out[k] = [PImage.open(io.BytesIO(x)).convert('RGB') for x in v] case 'depthcm': out[k] = [PImage.open(io.BytesIO(x)) for x in entry['depthcm']] return out def remove_undesired_objects(image): image = image.astype('uint8') nb_components, output, stats, centroids = cv2.connectedComponentsWithStats(image, connectivity=4) sizes = stats[:, -1] max_label = 1 max_size = sizes[1] for i in range(2, nb_components): if sizes[i] > max_size: max_label = i max_size = sizes[i] img2 = np.zeros(output.shape) img2[output == max_label] = 1 return img2 def clean_image(image_gestalt) -> np.ndarray: # clears image in from of unclassified and disconected components image_gestalt = np.array(image_gestalt) # unclassified_mask = cv2.inRange(image_gestalt, unclassified - 1, unclassified + 1) # unclassified_mask = cv2.bitwise_not(unclassified_mask) # mask = remove_undesired_objects(unclassified_mask).astype(np.uint8) # mask = cv2.morphologyEx(mask, cv2.MORPH_CLOSE, np.ones((11, 11), np.uint8), iterations=11) # mask = cv2.morphologyEx(mask, cv2.MORPH_DILATE, np.ones((11, 11), np.uint8), iterations=2) # image_gestalt[:, :, 0] *= mask # image_gestalt[:, :, 1] *= mask # image_gestalt[:, :, 2] *= mask return image_gestalt def get_vertices(image_gestalt, *, color_range=3.5, dialations=2, erosions=1, kernel_size=11): ### detects the apex and eave end and flashing end points apex_mask = cv2.inRange(image_gestalt, apex_color - color_range, apex_color + color_range) eave_end_point_mask = cv2.inRange(image_gestalt, eave_end_point - color_range, eave_end_point + color_range) flashing_end_point_mask = cv2.inRange(image_gestalt, flashing_end_point - color_range, flashing_end_point + color_range) eave_end_point_mask = cv2.bitwise_or(eave_end_point_mask, flashing_end_point_mask) kernel = np.ones((kernel_size, kernel_size), np.uint8) apex_mask = cv2.morphologyEx(apex_mask, cv2.MORPH_DILATE, kernel, iterations=dialations) apex_mask = cv2.morphologyEx(apex_mask, cv2.MORPH_ERODE, kernel, iterations=erosions) eave_end_point_mask = cv2.morphologyEx(eave_end_point_mask, cv2.MORPH_DILATE, kernel, iterations=dialations) eave_end_point_mask = cv2.morphologyEx(eave_end_point_mask, cv2.MORPH_ERODE, kernel, iterations=erosions) *_, apex_stats, apex_centroids = cv2.connectedComponentsWithStats(apex_mask, connectivity=4, stats=cv2.CV_32S) *_, other_stats, other_centroids = cv2.connectedComponentsWithStats(eave_end_point_mask, connectivity=4, stats=cv2.CV_32S) return (apex_centroids[1:], other_centroids[1:], apex_mask, eave_end_point_mask, np.maximum(apex_stats[1:, cv2.CC_STAT_WIDTH], apex_stats[1:, cv2.CC_STAT_HEIGHT])/2, np.maximum(other_stats[1:, cv2.CC_STAT_WIDTH], other_stats[1:, cv2.CC_STAT_HEIGHT])/2) def infer_vertices(image_gestalt, *, color_range=4.): ridge_color = np.array(gestalt_color_mapping["ridge"]) rake_color = np.array(gestalt_color_mapping["rake"]) ridge_mask = cv2.inRange(image_gestalt, ridge_color - color_range, ridge_color + color_range) ridge_mask = cv2.morphologyEx(ridge_mask, cv2.MORPH_DILATE, np.ones((3, 3)), iterations=4) rake_mask = cv2.inRange(image_gestalt, rake_color - color_range, rake_color + color_range) rake_mask = cv2.morphologyEx(rake_mask, cv2.MORPH_DILATE, np.ones((3, 3)), iterations=4) intersection_mask = cv2.bitwise_and(ridge_mask, rake_mask) intersection_mask = cv2.morphologyEx(intersection_mask, cv2.MORPH_DILATE, np.ones((11, 11)), iterations=3) *_, inferred_centroids = cv2.connectedComponentsWithStats(intersection_mask, connectivity=4, stats=cv2.CV_32S) return inferred_centroids[1:], intersection_mask def get_missed_vertices(vertices, inferred_centroids, *, min_missing_distance=200.0, **kwargs): vertices = KDTree(vertices) closest = vertices.query(inferred_centroids, k=1, distance_upper_bound=min_missing_distance) missed_points = inferred_centroids[closest[1] == len(vertices.data)] return missed_points def get_lines_and_directions(gest_seg_np, edge_class, *, color_range=4., rho, theta, threshold, min_line_length, max_line_gap, extend=30, kernel_size=3, dilation_iterations=1, **kwargs): edge_color = np.array(gestalt_color_mapping[edge_class]) mask = cv2.inRange(gest_seg_np, edge_color - color_range, edge_color + color_range) mask = cv2.morphologyEx(mask, cv2.MORPH_DILATE, np.ones((kernel_size, kernel_size)), iterations=dilation_iterations) if not np.any(mask): return [], [] # Run Hough on edge detected image # Output "lines" is an array containing endpoints of detected line segments # cv2.GaussianBlur(mask, (11, 11), 0, mask) lines = cv2.HoughLinesP(mask, rho, theta, threshold, np.array([]), min_line_length, max_line_gap) if lines is None: return [], [] line_directions = [] edges = [] for line_idx, line in enumerate(lines): for x1, y1, x2, y2 in line: if x1 < x2: x1, y1, x2, y2 = x2, y2, x1, y1 direction = (np.array([x2 - x1, y2 - y1])) direction = direction / np.linalg.norm(direction) for extend_value in range(0, int(extend), 5): new_direction = extend_value * direction x1, y1 = -new_direction + (x1, y1) x2, y2 = + new_direction + (x2, y2) line_directions.append(direction) edges.append((x1, y1, x2, y2)) return edges, line_directions def infer_missing_vertices(ridge_edges, rake_edges): ridge_edges = np.array(ridge_edges) rake_edges = np.array(rake_edges) ridge_ends = np.concatenate([ridge_edges[:, 2:], ridge_edges[:, :2]]) rake_ends = np.concatenate([rake_edges[:, 2:], rake_edges[:, :2]]) ridge_ends = KDTree(ridge_ends) rake_ends = KDTree(rake_ends) missing_candidates = rake_ends.query_ball_tree(ridge_ends, 10) missing_candidates = np.concatenate([*missing_candidates]) missing_candidates = np.unique(missing_candidates).astype(np.int32) return ridge_ends.data[missing_candidates] def get_vertices_and_edges_from_segmentation(gest_seg_np, *, point_radius=30, max_angle=5., point_radius_scale=1, **kwargs): '''Get the vertices and edges from the gestalt segmentation mask of the house''' # Apex connections = [] deviation_threshold = np.cos(np.deg2rad(max_angle)) (apex_centroids, eave_end_point_centroids, apex_mask, eave_end_point_mask, apex_radii, eave_radii) = get_vertices(gest_seg_np) vertices = np.concatenate([apex_centroids, eave_end_point_centroids]) # inferred_vertices, inferred_mask = infer_vertices(gest_seg_np) # missed_vertices = get_missed_vertices(vertices, inferred_vertices, **kwargs) # vertices = np.concatenate([vertices, missed_vertices]) edges = [] line_directions = [] rho = 1 # distance resolution in pixels of the Hough grid theta = np.pi / 180 # angular resolution in radians of the Hough grid threshold = 40 # minimum number of votes (intersections in Hough grid cell) min_line_length = 60 # minimum number of pixels making up a line max_line_gap = 40 # maximum gap in pixels between connectable line segments ridge_edges, ridge_directions = get_lines_and_directions(gest_seg_np, "ridge", rho=rho, theta=theta, threshold=threshold, min_line_length=min_line_length, max_line_gap=max_line_gap, kernel_size=3, dilation_iterations=3, **kwargs) rake_edges, rake_directions = get_lines_and_directions(gest_seg_np, "rake", rho=rho, theta=theta, threshold=threshold, min_line_length=min_line_length, max_line_gap=max_line_gap, **kwargs) if len(ridge_edges) > 0: edges.append(ridge_edges) line_directions.append(ridge_directions) if len(rake_edges) > 0: edges.append(rake_edges) line_directions.append(rake_directions) missed_vertices = [] if len(ridge_edges) > 0 and len(rake_edges) > 0: inferred_vertices = infer_missing_vertices(ridge_edges, rake_edges) missed_vertices = get_missed_vertices(vertices, inferred_vertices, **kwargs) vertices = np.concatenate([vertices, missed_vertices]) if len(vertices) < 2: return [], [] vertex_size = np.full(len(vertices), point_radius/2) if len(apex_radii) > 0 and len(eave_radii) > 0: apex_radii *= point_radius_scale eave_radii *= point_radius_scale apex_radii = np.maximum(apex_radii, 10) eave_radii = np.maximum(eave_radii, 10) point_radius = np.max([np.max(apex_radii), np.max(eave_radii)]) vertex_size[:len(apex_radii)] = apex_radii vertex_size[len(apex_radii):len(apex_radii) + len(eave_radii)] = eave_radii # for i, coords in enumerate(vertices): # coords = np.round(coords).astype(np.uint32) # radius = point_radius # np.clip(int(max_depth//2 + depth_np[coords[1], coords[0]]), 10, 30)#int(np.clip(max_depth - depth_np[coords[1], coords[0]], 10, 20)) # vertex_size[i] = scale * radius vertices = KDTree(vertices) for edge_class in ['eave', 'step_flashing', 'flashing', # 'post', 'valley', 'hip', 'transition_line', 'fascia', 'soffit',]: class_edges, class_directions = get_lines_and_directions(gest_seg_np, edge_class, rho=rho, theta=theta, threshold=threshold, min_line_length=min_line_length, max_line_gap=max_line_gap, **kwargs) if len(class_edges) > 0: edges.append(class_edges) line_directions.append(class_directions) edges = np.concatenate(edges).astype(np.float64) if len(edges) < 1: return [], [] line_directions = np.concatenate(line_directions).astype(np.float64) # calculate the distances between the vertices and the edge ends begin_edges = KDTree(edges[:, :2]) end_edges = KDTree(edges[:, 2:]) begin_indices = begin_edges.query_ball_tree(vertices, point_radius) end_indices = end_edges.query_ball_tree(vertices, point_radius) line_indices = np.where(np.array([len(i) and len(j) for i, j in zip(begin_indices, end_indices)]))[0] # create all possible connections between begin and end candidates that correspond to a line begin_vertex_list = [] end_vertex_list = [] line_idx_list = [] for line_idx in line_indices: begin_vertices, end_vertices = begin_indices[line_idx], end_indices[line_idx] begin_vertices, end_vertices = np.array(begin_vertices), np.array(end_vertices) begin_value = begin_edges.data[line_idx] end_value = end_edges.data[line_idx] begin_in_range_indices = np.where( np.linalg.norm(vertices.data[begin_vertices] - begin_value, axis=1) < vertex_size[begin_vertices])[0] end_in_range_indices = np.where( np.linalg.norm(vertices.data[end_vertices] - end_value, axis=1) < vertex_size[end_vertices])[0] begin_vertices = begin_vertices[begin_in_range_indices] end_vertices = end_vertices[end_in_range_indices] if len(begin_vertices) < 1 or len(end_vertices) < 1: continue begin_vertices, end_vertices = np.meshgrid(begin_vertices, end_vertices) begin_vertex_list.extend(begin_vertices.flatten()) end_vertex_list.extend(end_vertices.flatten()) line_idx_list.extend([line_idx] * len(begin_vertices.flatten())) line_idx_list = np.array(line_idx_list) all_connections = np.array([begin_vertex_list, end_vertex_list]) # decrease the number of possible connections to reduce number of calculations possible_connections = np.unique(all_connections, axis=1) possible_connections = np.sort(possible_connections, axis=0) possible_connections = np.unique(possible_connections, axis=1) possible_connections = possible_connections[:, possible_connections[0, :] != possible_connections[1, :]] if possible_connections.shape[1] < 1: return [], [] # precalculate the possible direction vectors possible_direction_vectors = vertices.data[possible_connections[0]] - vertices.data[possible_connections[1]] possible_direction_vectors = possible_direction_vectors / np.linalg.norm(possible_direction_vectors, axis=1)[:, np.newaxis] owned_lines_per_possible_connections = [list() for i in range(possible_connections.shape[1])] # assign lines to possible connections for line_idx, i, j in zip(line_idx_list, begin_vertex_list, end_vertex_list): if i == j: continue i, j = min(i, j), max(i, j) for connection_idx, connection in enumerate(possible_connections.T): if np.all((i, j) == connection): owned_lines_per_possible_connections[connection_idx].append(line_idx) break # check if the lines are in the same direction as the possible connection for fitted_line_idx, owned_lines_per_possible_connection in enumerate(owned_lines_per_possible_connections): line_deviations = np.abs( np.dot(line_directions[owned_lines_per_possible_connection], possible_direction_vectors[fitted_line_idx])) if np.any(line_deviations > deviation_threshold): connections.append(possible_connections[:, fitted_line_idx]) vertices = [{"xy": v, "type": VertexType.APEX} for v in apex_centroids] vertices += [{"xy": v, "type": VertexType.APEX} for v in missed_vertices] vertices += [{"xy": v, "type": VertexType.EAVE_END_POINT} for v in eave_end_point_centroids] return vertices, connections def get_uv_depth(vertices, depth): '''Get the depth of the vertices from the depth image''' depth[depth > 3000] = np.nan uv = np.array([v['xy'] for v in vertices]) uv_int = uv.astype(np.int32) H, W = depth.shape[:2] uv_int[:, 0] = np.clip(uv_int[:, 0], 0, W - 1) uv_int[:, 1] = np.clip(uv_int[:, 1], 0, H - 1) vertex_depth = depth[(uv_int[:, 1], uv_int[:, 0])] return uv, vertex_depth def merge_vertices_3d(vert_edge_per_image, merge_th=0.1, **kwargs): '''Merge vertices that are close to each other in 3D space and are of same types''' all_3d_vertices = [] connections_3d = [] cur_start = 0 types = [] for cimg_idx, (vertices, connections, vertices_3d) in vert_edge_per_image.items(): # remove nan values and remap the connections connections = [[a, b] for (a, b) in connections if not np.any(np.isnan(vertices_3d[a])) and not np.any(np.isnan(vertices_3d[b])) ] left_vertex_indices = np.where(np.all(~np.isnan(vertices_3d), axis=1))[0] new_indices = np.arange(len(left_vertex_indices)) new_vertex_mapping = dict(zip(left_vertex_indices, new_indices)) vertices = [v for i, v in enumerate(vertices) if i in new_vertex_mapping] types += [int(v['type'] == VertexType.APEX) for v in vertices] vertices_3d = vertices_3d[left_vertex_indices] connections = [[new_vertex_mapping[a] + cur_start, new_vertex_mapping[b] + cur_start] for a, b in connections] all_3d_vertices.append(vertices_3d) connections_3d += connections cur_start += len(vertices_3d) all_3d_vertices = np.concatenate(all_3d_vertices, axis=0) distmat = cdist(all_3d_vertices, all_3d_vertices) types = np.array(types).reshape(-1, 1) same_types = cdist(types, types) mask_to_merge = (distmat <= merge_th) & (same_types == 0) new_vertices = [] new_connections = [] to_merge = sorted(list(set([tuple(a.nonzero()[0].tolist()) for a in mask_to_merge]))) to_merge_final = defaultdict(list) for i in range(len(all_3d_vertices)): for j in to_merge: if i in j: to_merge_final[i] += j for k, v in to_merge_final.items(): to_merge_final[k] = list(set(v)) already_there = set() merged = [] for k, v in to_merge_final.items(): if k in already_there: continue merged.append(v) for vv in v: already_there.add(vv) old_idx_to_new = {} for count, idxs in enumerate(merged): new_vertices.append(all_3d_vertices[idxs].mean(axis=0)) for idx in idxs: old_idx_to_new[idx] = count new_vertices = np.array(new_vertices) for conn in connections_3d: new_con = sorted((old_idx_to_new[conn[0]], old_idx_to_new[conn[1]])) if new_con[0] == new_con[1]: continue if new_con not in new_connections: new_connections.append(new_con) return new_vertices, new_connections def prune_not_connected(all_3d_vertices, connections_3d): '''Prune vertices that are not connected to any other vertex''' connected = defaultdict(list) for c in connections_3d: connected[c[0]].append(c) connected[c[1]].append(c) new_indexes = {} new_verts = [] connected_out = [] for k, v in connected.items(): vert = all_3d_vertices[k] if tuple(vert) not in new_verts: new_verts.append(tuple(vert)) new_indexes[k] = len(new_verts) - 1 for k, v in connected.items(): for vv in v: connected_out.append((new_indexes[vv[0]], new_indexes[vv[1]])) connected_out = list(set(connected_out)) return np.array(new_verts), connected_out def clean_points3d(entry, clustering_eps): image_dict = {} for k, v in entry["images"].items(): image_dict[v.name] = v points = [v.xyz for k, v in entry["points3d"].items()] points = np.array(points) point_keys = [k for k, v in entry["points3d"].items()] point_keys = np.array(point_keys) clustered = DBSCAN(eps=clustering_eps, min_samples=5).fit(points).labels_ clustered_indices = np.argsort(clustered) points = points[clustered_indices] point_keys = point_keys[clustered_indices] clustered = clustered[clustered_indices] _, cluster_indices = np.unique(clustered, return_index=True) clustered_points = np.split(points, cluster_indices[1:]) clustered_keys = np.split(point_keys, cluster_indices[1:]) biggest_cluster_index = np.argmax([len(i) for i in clustered_points]) biggest_cluster = clustered_points[biggest_cluster_index] biggest_cluster_keys = clustered_keys[biggest_cluster_index] biggest_cluster_keys = set(biggest_cluster_keys) points3d_kdtree = KDTree(biggest_cluster) return points3d_kdtree, biggest_cluster_keys, image_dict def get_depth_from_pointcloud(image, pointcloud, biggest_cluster_keys, R, t): belonging_points3d = [] belonging_points2d = [] point_indices = np.where(image.point3D_ids != -1)[0] for idx, point_id in zip(point_indices, image.point3D_ids[point_indices]): if point_id in biggest_cluster_keys: belonging_points3d.append(pointcloud[point_id].xyz) belonging_points2d.append(image.xys[idx]) if len(belonging_points3d) < 1: print(f'No 3D points in image {image.name}') raise KeyError belonging_points3d = np.array(belonging_points3d) belonging_points2d = np.array(belonging_points2d) # projected2d, _ = cv2.projectPoints(belonging_points3d, R, t, K, dist_coeff) important = np.where(np.all(belonging_points2d >= 0, axis=1)) # Normalize the uv to the camera intrinsics world_to_cam = np.eye(4) world_to_cam[:3, :3] = R world_to_cam[:3, 3] = t homo_belonging_points = cv2.convertPointsToHomogeneous(belonging_points3d) depth = cv2.convertPointsFromHomogeneous(cv2.transform(homo_belonging_points, world_to_cam)) depth = depth[:, 0, 2] # projected2d = projected2d[:, 0, :] depth = depth[important[0]] # projected2d = projected2d[important[0]] projected2d = belonging_points2d[important[0]] return projected2d, depth def get_depthmap_from_pointcloud(pointcloud, biggest_cluster_keys, K, R, t, depthmap): belonging_points3d = [] for point_id in biggest_cluster_keys: belonging_points3d.append(pointcloud[point_id].xyz) belonging_points3d = np.array(belonging_points3d) projected2d, _ = cv2.projectPoints(belonging_points3d, R, t, K, 0) projected2d = projected2d.reshape(-1, 2) important = np.where(np.all(projected2d >= 0, axis=1))[0] # Normalize the uv to the camera intrinsics world_to_cam = np.eye(4) world_to_cam[:3, :3] = R world_to_cam[:3, 3] = t homo_belonging_points = cv2.convertPointsToHomogeneous(belonging_points3d) depth = cv2.convertPointsFromHomogeneous(cv2.transform(homo_belonging_points, world_to_cam)) depth = depth[:, 0, 2] # projected2d = projected2d[:, 0, :] depth = depth[important] projected2d = projected2d[important] projected2d = projected2d.astype(np.int32) projected2d[:, 1] = np.clip(projected2d[:, 1], 0, depthmap.shape[1]-1) projected2d[:, 0] = np.clip(projected2d[:, 0], 0, depthmap.shape[0]-1) pointcloud_depthmap = np.full_like(depthmap, 4000) sorted_indices = np.argsort(depth)[::-1] projected2d, depth = projected2d[sorted_indices], depth[sorted_indices] idx = np.searchsorted(depth, 1000) projected2d, depth = projected2d[:idx], depth[:idx] for point, depth_value in zip(projected2d, depth): cv2.circle(pointcloud_depthmap, point, 20, depth_value, -1) return pointcloud_depthmap def get_mesh_depthmap(mesh, K, R, t, depthmap, fill_value=4000): world_to_cam = np.eye(4) world_to_cam[:3, :3] = R world_to_cam[:3, 3] = t camera_transform = np.linalg.inv(world_to_cam) import trimesh camera = trimesh.scene.Camera(focal=(K[0, 0], K[1, 1]), resolution=depthmap.shape[::-1]) scene = trimesh.scene.scene.Scene(camera=camera, camera_transform=camera_transform) ray_origins, ray_directions, corresponding_pixels = scene.camera_rays() locations, index_ray, index_tri = mesh.ray.intersects_location(ray_origins, -ray_directions, multiple_hits=False) mesh_depths = np.linalg.norm(ray_origins[index_ray] - locations, axis=1) mesh_depthmap = np.full(camera.resolution, fill_value) mesh_depthmap[corresponding_pixels[index_ray, 0], corresponding_pixels[index_ray, 1]] = mesh_depths mesh_depthmap = cv2.flip(cv2.rotate(mesh_depthmap, cv2.ROTATE_90_COUNTERCLOCKWISE), 1) return mesh_depthmap def predict(entry, visualize=False, scale_estimation_coefficient=2.5, clustering_eps=100, dist_coeff=0, pointcloud_depth_coeff = 1, interpolation_radius=200, **kwargs) -> Tuple[np.ndarray, List[int]]: if 'gestalt' not in entry or 'depthcm' not in entry or 'K' not in entry or 'R' not in entry or 't' not in entry: print('Missing required fields in the entry') return (entry['__key__'], *empty_solution()) entry = hoho.decode(entry) vert_edge_per_image = {} points3d_kdtree, biggest_cluster_keys, image_dict = clean_points3d(entry, clustering_eps) # import trimesh # mesh = trimesh.Trimesh(vertices=entry["mesh_vertices"], faces=entry["mesh_faces"][:,1:], use_embree=True) for i, (gest, depthcm, K, R, t, imagekey) in enumerate(zip(entry['gestalt'], entry['depthcm'], entry['K'], entry['R'], entry['t'], entry['__imagekey__'] )): gest_seg = gest.resize(depthcm.size) gest_seg_np = np.array(gest_seg).astype(np.uint8) vertices, connections = get_vertices_and_edges_from_segmentation(gest_seg_np, **kwargs) if (len(vertices) < 2) or (len(connections) < 1): print(f'Not enough vertices or connections in image {i}') vert_edge_per_image[i] = np.empty((0, 2)), [], np.empty((0, 3)) continue depth_np = np.array(depthcm) / scale_estimation_coefficient # depth_np = get_mesh_depthmap(mesh, K, R, t, depth_np, 4000).astype(np.float32) # kernel = np.array([[-1,-1,-1], [-1,9,-1], [-1,-1,-1]]) # depth_np = cv2.filter2D(depth_np, -1, kernel) uv, depth_vert_from_depth_map = get_uv_depth(vertices, depth_np) try: # raise KeyError image = image_dict[imagekey] projected2d, depth = get_depth_from_pointcloud(image, entry["points3d"], biggest_cluster_keys, R, t) if len(depth) < 1: print(f'No 3D points in image {i}') # vert_edge_per_image[i] = np.empty((0, 2)), [], np.empty((0, 3)) raise KeyError depth *= pointcloud_depth_coeff # interpolator = si.NearestNDInterpolator(projected2d, depth, rescale=True) interpolator = NearestNDInterpolatorWithThreshold(projected2d, depth, interpolation_radius) uv = np.array([v['xy'] for v in vertices]) xi, yi = uv[:, 0], uv[:, 1] depth_vert_from_pointcloud = interpolator(xi, yi) depthmap_used = False except KeyError: #Revert to the depthmap # if len(biggest_cluster_keys) > 0: # depth_map = get_depthmap_from_pointcloud(entry["points3d"], biggest_cluster_keys, K, R, t, depth_np) # uv, depth_vert_from_depth_map = get_uv_depth(vertices, depth_map) depthmap_used = True # Normalize the uv to the camera intrinsics xy_local = np.ones((len(uv), 3)) xy_local[:, 0] = (uv[:, 0] - K[0, 2]) / K[0, 0] xy_local[:, 1] = (uv[:, 1] - K[1, 2]) / K[1, 1] # Get the 3D vertices depth_vert_nan_idxs = None if depthmap_used: depth_vert = depth_vert_from_depth_map else: depth_vert_nan_idxs = np.where(np.isnan(depth_vert_from_pointcloud))[0] depth_vert_from_pointcloud[depth_vert_nan_idxs] = depth_vert_from_depth_map[depth_vert_nan_idxs] depth_vert = depth_vert_from_pointcloud norm_factor = np.linalg.norm(xy_local, axis=1)[..., None] if depth_vert_nan_idxs is not None and len(depth_vert_nan_idxs) > 0: norm_factor_min = np.min(norm_factor[depth_vert_nan_idxs]) if len(depth_vert_nan_idxs) != len(norm_factor): norm_factor_max = np.max(norm_factor[~np.isin(np.arange(len(norm_factor)), depth_vert_nan_idxs)]) else: norm_factor_max = np.max(norm_factor) else: norm_factor_min = np.min(norm_factor) norm_factor_max = np.max(norm_factor) vertices_3d_local = depth_vert[..., None] * xy_local if depthmap_used: vertices_3d_local /= norm_factor_max else: vertices_3d_local[depth_vert_nan_idxs] /= norm_factor_max vertices_3d_local[~np.isin(np.arange(len(vertices_3d_local)), depth_vert_nan_idxs)] /= norm_factor_max world_to_cam = np.eye(4) world_to_cam[:3, :3] = R world_to_cam[:3, 3] = t cam_to_world = np.linalg.inv(world_to_cam) vertices_3d = cv2.transform(cv2.convertPointsToHomogeneous(vertices_3d_local), cam_to_world) vertices_3d = cv2.convertPointsFromHomogeneous(vertices_3d).reshape(-1, 3) # if not depthmap_used: # not_nan_items = np.all(~np.isnan(vertices_3d), axis=1) # _, closest_fitted = points3d_kdtree.query(vertices_3d[not_nan_items]) # # vertices_3d[not_nan_items] = points3d_kdtree.data[closest_fitted] vert_edge_per_image[i] = vertices, connections, vertices_3d all_3d_vertices, connections_3d = merge_vertices_3d(vert_edge_per_image, **kwargs) all_3d_vertices_clean, connections_3d_clean = all_3d_vertices, connections_3d # all_3d_vertices_clean, connections_3d_clean = prune_not_connected(all_3d_vertices, connections_3d) # highest_edges = np.argpartition(all_3d_vertices_clean[:, 1], 4)[:4].tolist() # # connections_3d_clean.append(highest_edges[:2]) # connections_3d_clean.append(highest_edges[2:]) # all_3d_vertices_clean, connections_3d_clean = prune_not_connected(all_3d_vertices, connections_3d) if (len(all_3d_vertices_clean) < 2) or len(connections_3d_clean) < 1: print(f'Not enough vertices or connections in the 3D vertices') return (entry['__key__'], *empty_solution()) if visualize: from hoho.viz3d import plot_estimate_and_gt plot_estimate_and_gt(all_3d_vertices_clean, connections_3d_clean, entry['wf_vertices'], entry['wf_edges']) return entry['__key__'], all_3d_vertices_clean, connections_3d_clean