def convert_gt_to_kitti_annos(self):
annos = []
for i in range(len(self.cloud_and_label_list)):
annotation_path, _ = self.cloud_and_label_list[i]
gt_boxes, gt_names = self.read_annotations_data(annotation_path)
anno = kitti.get_start_result_anno()
num_example = 0
box3d_lidar = gt_boxes
for j in range(box3d_lidar.shape[0]):
anno["bbox"].append(np.array([0, 0, 100, 100]))
anno["alpha"].append(-10)
anno["dimensions"].append(box3d_lidar[j, 3:6])
anno["location"].append(box3d_lidar[j, :3])
anno["rotation_y"].append(box3d_lidar[j, 6])
anno["name"].append(gt_names[j])
anno["truncated"].append(0.0)
anno["occluded"].append(0)
anno["score"].append(0)
num_example += 1
if num_example != 0:
anno = {n: np.stack(v) for n, v in anno.items()}
annos.append(anno)
else:
annos.append(kitti.empty_result_anno())
num_example = annos[-1]["name"].shape[0]
annos[-1]["metadata"] = {'image_idx': i}
return annos
def convert_detection_to_kitti_annos(self, detection):
class_names = self._class_names
annos = []
for i in range(len(detection)):
det = detection[i]
final_box_preds = det["box3d_lidar"].detach().cpu().numpy()
label_preds = det["label_preds"].detach().cpu().numpy()
scores = det["scores"].detach().cpu().numpy()
anno = kitti.get_start_result_anno()
num_example = 0
box3d_lidar = final_box_preds
for j in range(box3d_lidar.shape[0]):
anno["bbox"].append(np.array([0, 0, 100, 100]))
anno["alpha"].append(-10)
anno["dimensions"].append(box3d_lidar[j, 3:6])
anno["location"].append(box3d_lidar[j, :3])
anno["rotation_y"].append(box3d_lidar[j, 6])
anno["name"].append(class_names[int(label_preds[j])])
anno["truncated"].append(0.0)
anno["occluded"].append(0)
anno["score"].append(scores[j])
num_example += 1
if num_example != 0:
anno = {n: np.stack(v) for n, v in anno.items()}
annos.append(anno)
else:
annos.append(kitti.empty_result_anno())
num_example = annos[-1]["name"].shape[0]
annos[-1]["metadata"] = det["metadata"]
return annos
def evaluation_kitti(self, detections, output_dir):
"""eval by kitti evaluation tool.
I use num_lidar_pts to set easy, mod, hard.
easy: num>15, mod: num>7, hard: num>0.
"""
print("++++++++NuScenes KITTI unofficial Evaluation:")
print(
"++++++++easy: num_lidar_pts>15, mod: num_lidar_pts>7, hard: num_lidar_pts>0"
)
print("++++++++The bbox AP is invalid. Don't forget to ignore it.")
class_names = self._class_names
gt_annos = self.ground_truth_annotations
if gt_annos is None:
return None
gt_annos = deepcopy(gt_annos)
detections = deepcopy(detections)
dt_annos = []
for det in detections:
final_box_preds = det["box3d_lidar"].detach().cpu().numpy()
label_preds = det["label_preds"].detach().cpu().numpy()
scores = det["scores"].detach().cpu().numpy()
anno = kitti.get_start_result_anno()
num_example = 0
box3d_lidar = final_box_preds
for j in range(box3d_lidar.shape[0]):
anno["bbox"].append(np.array([0, 0, 50, 50]))
anno["alpha"].append(-10)
anno["dimensions"].append(box3d_lidar[j, 3:6])
anno["location"].append(box3d_lidar[j, :3])
anno["rotation_y"].append(box3d_lidar[j, 6])
anno["name"].append(class_names[int(label_preds[j])])
anno["truncated"].append(0.0)
anno["occluded"].append(0)
anno["score"].append(scores[j])
num_example += 1
if num_example != 0:
anno = {n: np.stack(v) for n, v in anno.items()}
dt_annos.append(anno)
else:
dt_annos.append(kitti.empty_result_anno())
num_example = dt_annos[-1]["name"].shape[0]
dt_annos[-1]["metadata"] = det["metadata"]
for anno in gt_annos:
names = anno["name"].tolist()
mapped_names = []
for n in names:
if n in self.NameMapping:
mapped_names.append(self.NameMapping[n])
else:
mapped_names.append(n)
anno["name"] = np.array(mapped_names)
for anno in dt_annos:
names = anno["name"].tolist()
mapped_names = []
for n in names:
if n in self.NameMapping:
mapped_names.append(self.NameMapping[n])
else:
mapped_names.append(n)
anno["name"] = np.array(mapped_names)
mapped_class_names = []
for n in self._class_names:
if n in self.NameMapping:
mapped_class_names.append(self.NameMapping[n])
else:
mapped_class_names.append(n)
z_axis = 2
z_center = 0.5
# for regular raw lidar data, z_axis = 2, z_center = 0.5.
result_official_dict = get_official_eval_result(gt_annos,
dt_annos,
mapped_class_names,
z_axis=z_axis,
z_center=z_center)
result_coco = get_coco_eval_result(gt_annos,
dt_annos,
mapped_class_names,
z_axis=z_axis,
z_center=z_center)
return {
"results": {
"official": result_official_dict["result"],
"coco": result_coco["result"],
},
"detail": {
"official": result_official_dict["detail"],
"coco": result_coco["detail"],
},
}
def predict_kitti_to_anno(net,
example,
class_names,
center_limit_range=None,
lidar_input=False,
global_set=None):
batch_image_shape = example['image_shape']
batch_imgidx = example['image_idx']
predictions_dicts = net(example)
# t = time.time()
annos = []
for i, preds_dict in enumerate(predictions_dicts):
image_shape = batch_image_shape[i]
img_idx = preds_dict["image_idx"]
if preds_dict["bbox"] is not None:
box_2d_preds = preds_dict["bbox"].detach().cpu().numpy()
box_preds = preds_dict["box3d_camera"].detach().cpu().numpy()
scores = preds_dict["scores"].detach().cpu().numpy()
box_preds_lidar = preds_dict["box3d_lidar"].detach().cpu().numpy()
# write pred to file
label_preds = preds_dict["label_preds"].detach().cpu().numpy()
# label_preds = np.zeros([box_2d_preds.shape[0]], dtype=np.int32)
anno = kitti.get_start_result_anno()
num_example = 0
for box, box_lidar, bbox, score, label in zip(
box_preds, box_preds_lidar, box_2d_preds, scores,
label_preds):
if not lidar_input:
if bbox[0] > image_shape[1] or bbox[1] > image_shape[0]:
continue
if bbox[2] < 0 or bbox[3] < 0:
continue
# print(img_shape)
if center_limit_range is not None:
limit_range = np.array(center_limit_range)
if (np.any(box_lidar[:3] < limit_range[:3])
or np.any(box_lidar[:3] > limit_range[3:])):
continue
bbox[2:] = np.minimum(bbox[2:], image_shape[::-1])
bbox[:2] = np.maximum(bbox[:2], [0, 0])
anno["name"].append(class_names[int(label)])
anno["truncated"].append(0.0)
anno["occluded"].append(0)
anno["alpha"].append(-np.arctan2(-box_lidar[1], box_lidar[0]) +
box[6])
anno["bbox"].append(bbox)
anno["dimensions"].append(box[3:6])
anno["location"].append(box[:3])
anno["rotation_y"].append(box[6])
if global_set is not None:
for i in range(100000):
if score in global_set:
score -= 1 / 100000
else:
global_set.add(score)
break
anno["score"].append(score)
num_example += 1
if num_example != 0:
anno = {n: np.stack(v) for n, v in anno.items()}
annos.append(anno)
else:
annos.append(kitti.empty_result_anno())
else:
annos.append(kitti.empty_result_anno())
num_example = annos[-1]["name"].shape[0]
annos[-1]["image_idx"] = np.array([img_idx] * num_example,
dtype=np.int64)
return annos
def convert_detection_to_kitti_annos(self, detection):
class_names = self._class_names
det_image_idxes = [det["metadata"]["image_idx"] for det in detection]
gt_image_idxes = [
info["image"]["image_idx"] for info in self._kitti_infos
]
annos = []
for i in range(len(detection)):
det_idx = det_image_idxes[i]
det = detection[i]
# info = self._kitti_infos[gt_image_idxes.index(det_idx)]
info = self._kitti_infos[i]
calib = info["calib"]
rect = calib["R0_rect"]
Trv2c = calib["Tr_velo_to_cam"]
P2 = calib["P2"]
final_box_preds = det["box3d_lidar"].detach().cpu().numpy()
label_preds = det["label_preds"].detach().cpu().numpy()
scores = det["scores"].detach().cpu().numpy()
if final_box_preds.shape[0] != 0:
final_box_preds[:, 2] -= final_box_preds[:, 5] / 2
box3d_camera = box_np_ops.box_lidar_to_camera(
final_box_preds, rect, Trv2c)
locs = box3d_camera[:, :3]
dims = box3d_camera[:, 3:6]
angles = box3d_camera[:, 6]
camera_box_origin = [0.5, 1.0, 0.5]
box_corners = box_np_ops.center_to_corner_box3d(
locs, dims, angles, camera_box_origin, axis=1)
box_corners_in_image = box_np_ops.project_to_image(
box_corners, P2)
# box_corners_in_image: [N, 8, 2]
minxy = np.min(box_corners_in_image, axis=1)
maxxy = np.max(box_corners_in_image, axis=1)
bbox = np.concatenate([minxy, maxxy], axis=1)
anno = kitti.get_start_result_anno()
num_example = 0
box3d_lidar = final_box_preds
for j in range(box3d_lidar.shape[0]):
image_shape = info["image"]["image_shape"]
if bbox[j, 0] > image_shape[1] or bbox[j, 1] > image_shape[0]:
continue
if bbox[j, 2] < 0 or bbox[j, 3] < 0:
continue
bbox[j, 2:] = np.minimum(bbox[j, 2:], image_shape[::-1])
bbox[j, :2] = np.maximum(bbox[j, :2], [0, 0])
anno["bbox"].append(bbox[j])
# convert center format to kitti format
# box3d_lidar[j, 2] -= box3d_lidar[j, 5] / 2
anno["alpha"].append(
-np.arctan2(-box3d_lidar[j, 1], box3d_lidar[j, 0]) +
box3d_camera[j, 6])
anno["dimensions"].append(box3d_camera[j, 3:6])
anno["location"].append(box3d_camera[j, :3])
anno["rotation_y"].append(box3d_camera[j, 6])
anno["name"].append(class_names[int(label_preds[j])])
anno["truncated"].append(0.0)
anno["occluded"].append(0)
anno["score"].append(scores[j])
num_example += 1
if num_example != 0:
anno = {n: np.stack(v) for n, v in anno.items()}
annos.append(anno)
else:
annos.append(kitti.empty_result_anno())
num_example = annos[-1]["name"].shape[0]
annos[-1]["metadata"] = det["metadata"]
return annos
def _process_output(predictions_dicts,
batch_image_shape,
class_names,
center_limit_range=None,
lidar_input=False,
global_set=None):
'''Predict net output, reformat output, return'''
annos = []
# For each lidar/camera scan, perform
for i, preds_dict in enumerate(predictions_dicts):
image_shape = batch_image_shape[i]
img_idx = preds_dict["image_idx"]
# If atleast one prediction is made by the net, process output
if preds_dict["bbox"] is not None:
# Detach from Grad, GPU and tensor
bbox = preds_dict["bbox"].detach().cpu().numpy()
box3d_camera = preds_dict["box3d_camera"].detach().cpu().numpy()
box3d_lidar = preds_dict["box3d_lidar"].detach().cpu().numpy()
label_preds = preds_dict["label_preds"].detach().cpu().numpy()
scores = preds_dict["scores"].detach().cpu().numpy()
# Setup initial variable values
anno = kitti.get_start_result_anno()
num_example = 0 # Number of bounding boxes found by the net
# Append annotations for each bounding box detection
for bbox_camera, bbox_lidar, bbox_2d, score, label in zip(
box3d_camera, box3d_lidar, bbox, scores, label_preds):
if not lidar_input: # If camera data is available along with lidar input, then
if bbox_2d[0] > image_shape[1] or bbox_2d[1] > image_shape[
0]: # If bbox_2d length/breadth > camera image size, then
continue # Stop further processing of this specific 'for' loop
if bbox_2d[2] < 0 or bbox_2d[
3] < 0: # If bbox_2d length/breadth < 0, then
continue # Stop further processing of this specific 'for' loop
# # DEBUG:
# print(f'image: {image_shape[::-1]}') # NOTE: image_shape is shape of camera images
# print(f'bbox: {bbox_2d}')
print(f'bbox_lidar: {bbox_lidar}')
print(f'score: {score}')
if center_limit_range is not None:
limit_range = np.array(center_limit_range)
if (np.any(bbox_lidar[:3] < limit_range[:3])
or np.any(bbox_lidar[:3] > limit_range[3:])
): # If out of limit range, then
continue # Stop further processing of this specific 'for' loop
bbox_2d[2:] = np.minimum(
bbox_2d[2:], image_shape[::-1]
) # Location must be within image boundaries
bbox_2d[:2] = np.maximum(bbox_2d[:2], [0, 0]) # Size must >= 0
anno["name"].append(
class_names[int(label)]) # label name such as 'car'
anno["truncated"].append(
0.0) # FIXME: Not sure what is the point
anno["occluded"].append(0) # FIXME: Not sure what is the point
anno["alpha"].append(
-np.arctan2(-bbox_lidar[1], bbox_lidar[0]) +
bbox_camera[6])
anno["bbox"].append(
bbox_2d) # 2D bounding box: x, y, length, breadth
anno["location"].append(bbox_camera[:3]) # x, y, z
anno["dimensions"].append(bbox_camera[3:6]) # length, breadth
anno["rotation_y"].append(bbox_camera[6]) # angle
# FIXME: Not sure but looks like previous scores based update can be used here
if global_set is not None:
for i in range(100000):
if score in global_set:
score -= 1 / 100000
else:
global_set.add(score)
break
anno["score"].append(score)
num_example += 1
print(num_example) # DEBUG:
if num_example != 0:
anno = {n: np.stack(v) for n, v in anno.items()}
annos.append(anno)
else:
annos.append(kitti.empty_result_anno())
else:
# Simply an empty set of annotations
annos.append(kitti.empty_result_anno())
num_example = annos[-1]["name"].shape[0]
annos[-1]["image_idx"] = np.array([img_idx] * num_example,
dtype=np.int64)
return annos
def predict_kitti_to_anno(net,
example,
class_names,
center_limit_range=None,
lidar_input=False,
global_set=None):
# eval example : [0: 'voxels', 1: 'num_points', 2: 'coordinates', 3: 'rect'
# 4: 'Trv2c', 5: 'P2', 6: 'anchors', 7: 'anchors_mask'
# 8: 'image_idx', 9: 'image_shape']
batch_image_shape = example[9]
batch_imgidx = example[8]
pillar_x = example[0][:, :, 0].unsqueeze(0).unsqueeze(0)
pillar_y = example[0][:, :, 1].unsqueeze(0).unsqueeze(0)
pillar_z = example[0][:, :, 2].unsqueeze(0).unsqueeze(0)
pillar_i = example[0][:, :, 3].unsqueeze(0).unsqueeze(0)
num_points_per_pillar = example[1].float().unsqueeze(0)
# Find distance of x, y, and z from pillar center
# assuming xyres_16.proto
coors_x = example[2][:, 3].float()
coors_y = example[2][:, 2].float()
x_sub = coors_x.unsqueeze(1) * 0.16 + 0.1
y_sub = coors_y.unsqueeze(1) * 0.16 + -39.9
ones = torch.ones([1, 100], dtype=torch.float32, device=pillar_x.device)
x_sub_shaped = torch.mm(x_sub, ones).unsqueeze(0).unsqueeze(0)
y_sub_shaped = torch.mm(y_sub, ones).unsqueeze(0).unsqueeze(0)
num_points_for_a_pillar = pillar_x.size()[3]
mask = get_paddings_indicator(num_points_per_pillar,
num_points_for_a_pillar,
axis=0)
mask = mask.permute(0, 2, 1)
mask = mask.unsqueeze(1)
mask = mask.type_as(pillar_x)
coors = example[2]
anchors = example[6]
anchors_mask = example[7]
anchors_mask = torch.as_tensor(anchors_mask,
dtype=torch.uint8,
device=pillar_x.device)
anchors_mask = anchors_mask.byte()
rect = example[3]
Trv2c = example[4]
P2 = example[5]
image_idx = example[8]
input = [
pillar_x, pillar_y, pillar_z, pillar_i, num_points_per_pillar,
x_sub_shaped, y_sub_shaped, mask, coors, anchors, anchors_mask, rect,
Trv2c, P2, image_idx
]
predictions_dicts = net(input)
annos = []
for i, preds_dict in enumerate(predictions_dicts):
image_shape = batch_image_shape[i]
img_idx = preds_dict[5]
if preds_dict[0] is not None: # bbox list
box_2d_preds = preds_dict[0].detach().cpu().numpy() # bbox
box_preds = preds_dict[1].detach().cpu().numpy() # bbox3d_camera
scores = preds_dict[3].detach().cpu().numpy() # scores
box_preds_lidar = preds_dict[2].detach().cpu().numpy(
) # box3d_lidar
# write pred to file
label_preds = preds_dict[4].detach().cpu().numpy() # label_preds
anno = kitti.get_start_result_anno()
num_example = 0
for box, box_lidar, bbox, score, label in zip(
box_preds, box_preds_lidar, box_2d_preds, scores,
label_preds):
if not lidar_input:
if bbox[0] > image_shape[1] or bbox[1] > image_shape[0]:
continue
if bbox[2] < 0 or bbox[3] < 0:
continue
# print(img_shape)
if center_limit_range is not None:
limit_range = np.array(center_limit_range)
if (np.any(box_lidar[:3] < limit_range[:3])
or np.any(box_lidar[:3] > limit_range[3:])):
continue
image_shape = [image_shape[0], image_shape[1]]
bbox[2:] = np.minimum(bbox[2:], image_shape[::-1])
bbox[:2] = np.maximum(bbox[:2], [0, 0])
anno["name"].append(class_names[int(label)])
anno["truncated"].append(0.0)
anno["occluded"].append(0)
anno["alpha"].append(-np.arctan2(-box_lidar[1], box_lidar[0]) +
box[6])
anno["bbox"].append(bbox)
anno["dimensions"].append(box[3:6])
anno["location"].append(box[:3])
anno["rotation_y"].append(box[6])
if global_set is not None:
for i in range(100000):
if score in global_set:
score -= 1 / 100000
else:
global_set.add(score)
break
anno["score"].append(score)
num_example += 1
if num_example != 0:
anno = {n: np.stack(v) for n, v in anno.items()}
annos.append(anno)
else:
annos.append(kitti.empty_result_anno())
else:
annos.append(kitti.empty_result_anno())
num_example = annos[-1]["name"].shape[0]
annos[-1]["image_idx"] = np.array([img_idx] * num_example,
dtype=np.int64)
return annos
def predict_to_kitti_label(net,
example,
class_names,
center_limit_range=None,
lidar_input=False):
predictions_dicts = net(example)
limit_range = None
if center_limit_range is not None:
limit_range = np.array(center_limit_range)
annos = []
for i, preds_dict in enumerate(predictions_dicts):
box3d_lidar = preds_dict["box3d_lidar"].detach().cpu().numpy()
box3d_camera = None
scores = preds_dict["scores"].detach().cpu().numpy()
label_preds = preds_dict["label_preds"].detach().cpu().numpy()
if "box3d_camera" in preds_dict:
box3d_camera = preds_dict["box3d_camera"].detach().cpu().numpy()
bbox = None
if "bbox" in preds_dict:
bbox = preds_dict["bbox"].detach().cpu().numpy()
anno = kitti.get_start_result_anno()
num_example = 0
for j in range(box3d_lidar.shape[0]):
if limit_range is not None:
if (np.any(box3d_lidar[j, :3] < limit_range[:3])
or np.any(box3d_lidar[j, :3] > limit_range[3:])):
continue
if "bbox" in preds_dict:
assert "image_shape" in preds_dict["metadata"]["image"]
image_shape = preds_dict["metadata"]["image"]["image_shape"]
if bbox[j, 0] > image_shape[1] or bbox[j, 1] > image_shape[0]:
continue
if bbox[j, 2] < 0 or bbox[j, 3] < 0:
continue
bbox[j, 2:] = np.minimum(bbox[j, 2:], image_shape[::-1])
bbox[j, :2] = np.maximum(bbox[j, :2], [0, 0])
anno["bbox"].append(bbox[j])
# convert center format to kitti format
# box3d_lidar[j, 2] -= box3d_lidar[j, 5] / 2
anno["alpha"].append(
-np.arctan2(-box3d_lidar[j, 1], box3d_lidar[j, 0]) +
box3d_camera[j, 6])
anno["dimensions"].append(box3d_camera[j, 3:6])
anno["location"].append(box3d_camera[j, :3])
anno["rotation_y"].append(box3d_camera[j, 6])
### added for mmmot compatibility
#anno["image_idx"] = preds_dict["metadata"]["image"]["image_idx"]
else:
# bbox's height must higher than 25, otherwise filtered during eval
anno["bbox"].append(np.array([0, 0, 50, 50]))
# note that if you use raw lidar data to eval,
# you will get strange performance because
# in standard KITTI eval, instance with small bbox height
# will be filtered. but it is impossible to filter
# boxes when using raw data.
anno["alpha"].append(0.0)
anno["dimensions"].append(box3d_lidar[j, 3:6])
anno["location"].append(box3d_lidar[j, :3])
anno["rotation_y"].append(box3d_lidar[j, 6])
anno["name"].append(class_names[int(label_preds[j])])
anno["truncated"].append(0.0)
anno["occluded"].append(0)
anno["score"].append(scores[j])
num_example += 1
if num_example != 0:
anno = {n: np.stack(v) for n, v in anno.items()}
annos.append(anno)
else:
annos.append(kitti.empty_result_anno())
num_example = annos[-1]["name"].shape[0]
annos[-1]["metadata"] = preds_dict["metadata"]
return annos
def predict_kitti_to_anno(net,
detection_2d_path,
fusion_layer,
example,
class_names,
center_limit_range=None,
lidar_input=False,
global_set=None):
focal_loss_val = SigmoidFocalClassificationLoss()
batch_image_shape = example['image_shape']
batch_imgidx = example['image_idx']
all_3d_output_camera_dict, all_3d_output, top_predictions, fusion_input, torch_index = net(
example, detection_2d_path)
t_start = time.time()
fusion_cls_preds, flag = fusion_layer(fusion_input.cuda(),
torch_index.cuda())
t_end = time.time()
t_fusion = t_end - t_start
fusion_cls_preds_reshape = fusion_cls_preds.reshape(1, 200, 176, 2)
all_3d_output.update({
'cls_preds': fusion_cls_preds_reshape
}) ###########################################!!!!!!!!!!!!!
predictions_dicts = predict_v2(net, example, all_3d_output)
test_mode = False
if test_mode == False:
d3_gt_boxes = example["d3_gt_boxes"][0, :, :]
if d3_gt_boxes.shape[0] == 0:
target_for_fusion = np.zeros((1, 70400, 1))
positives = torch.zeros(1, 70400).type(torch.float32).cuda()
negatives = torch.zeros(1, 70400).type(torch.float32).cuda()
negatives[:, :] = 1
else:
d3_gt_boxes_camera = box_torch_ops.box_lidar_to_camera(
d3_gt_boxes, example['rect'][0, :], example['Trv2c'][0, :])
d3_gt_boxes_camera_bev = d3_gt_boxes_camera[:, [0, 2, 3, 5, 6]]
###### predicted bev boxes
pred_3d_box = all_3d_output_camera_dict[0]["box3d_camera"]
pred_bev_box = pred_3d_box[:, [0, 2, 3, 5, 6]]
#iou_bev = bev_box_overlap(d3_gt_boxes_camera_bev.detach().cpu().numpy(), pred_bev_box.detach().cpu().numpy(), criterion=-1)
iou_bev = d3_box_overlap(
d3_gt_boxes_camera.detach().cpu().numpy(),
pred_3d_box.squeeze().detach().cpu().numpy(),
criterion=-1)
iou_bev_max = np.amax(iou_bev, axis=0)
target_for_fusion = ((iou_bev_max >= 0.7) * 1).reshape(1, -1, 1)
positive_index = ((iou_bev_max >= 0.7) * 1).reshape(1, -1)
positives = torch.from_numpy(positive_index).type(
torch.float32).cuda()
negative_index = ((iou_bev_max <= 0.5) * 1).reshape(1, -1)
negatives = torch.from_numpy(negative_index).type(
torch.float32).cuda()
cls_preds = fusion_cls_preds
one_hot_targets = torch.from_numpy(target_for_fusion).type(
torch.float32).cuda()
negative_cls_weights = negatives.type(torch.float32) * 1.0
cls_weights = negative_cls_weights + 1.0 * positives.type(
torch.float32)
pos_normalizer = positives.sum(1, keepdim=True).type(torch.float32)
cls_weights /= torch.clamp(pos_normalizer, min=1.0)
cls_losses = focal_loss_val._compute_loss(cls_preds, one_hot_targets,
cls_weights.cuda()) # [N, M]
cls_losses_reduced = cls_losses.sum() / example['labels'].shape[0]
cls_losses_reduced = cls_losses_reduced.detach().cpu().numpy()
else:
cls_losses_reduced = 1000
annos = []
for i, preds_dict in enumerate(predictions_dicts):
image_shape = batch_image_shape[i]
img_idx = preds_dict["image_idx"]
if preds_dict["bbox"] is not None or preds_dict["bbox"].size.numel(
) != 0:
box_2d_preds = preds_dict["bbox"].detach().cpu().numpy()
box_preds = preds_dict["box3d_camera"].detach().cpu().numpy()
scores = preds_dict["scores"].detach().cpu().numpy()
box_preds_lidar = preds_dict["box3d_lidar"].detach().cpu().numpy()
# write pred to file
label_preds = preds_dict["label_preds"].detach().cpu().numpy()
# label_preds = np.zeros([box_2d_preds.shape[0]], dtype=np.int32)
anno = kitti.get_start_result_anno()
num_example = 0
for box, box_lidar, bbox, score, label in zip(
box_preds, box_preds_lidar, box_2d_preds, scores,
label_preds):
if not lidar_input:
if bbox[0] > image_shape[1] or bbox[1] > image_shape[0]:
continue
if bbox[2] < 0 or bbox[3] < 0:
continue
# print(img_shape)
if center_limit_range is not None:
limit_range = np.array(center_limit_range)
if (np.any(box_lidar[:3] < limit_range[:3])
or np.any(box_lidar[:3] > limit_range[3:])):
continue
bbox[2:] = np.minimum(bbox[2:], image_shape[::-1])
bbox[:2] = np.maximum(bbox[:2], [0, 0])
anno["name"].append(class_names[int(label)])
anno["truncated"].append(0.0)
anno["occluded"].append(0)
anno["alpha"].append(-np.arctan2(-box_lidar[1], box_lidar[0]) +
box[6])
anno["bbox"].append(bbox)
anno["dimensions"].append(box[3:6])
anno["location"].append(box[:3])
anno["rotation_y"].append(box[6])
if global_set is not None:
for i in range(100000):
if score in global_set:
score -= 1 / 100000
else:
global_set.add(score)
break
anno["score"].append(score)
num_example += 1
if num_example != 0:
anno = {n: np.stack(v) for n, v in anno.items()}
annos.append(anno)
else:
annos.append(kitti.empty_result_anno())
else:
annos.append(kitti.empty_result_anno())
num_example = annos[-1]["name"].shape[0]
annos[-1]["image_idx"] = np.array([img_idx] * num_example,
dtype=np.int64)
#cls_losses_reduced=100
return annos, cls_losses_reduced