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[Feature] Support MultiModalityDet3DInferencer (open-mmlab#2342)
* add multimodality inferencer * add multimodality inferencer * add Loader and Inferencer, fix some mono vis bugs * add UT for multi_modality_inferencer * add calib file in UT * fix type hint * resolve comments * small update * update to Base3DInferencer * fix docstring * minor fix * resolve comments * resolve comments * add suffix check * fix UT
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mmdet3d/apis/inferencers/multi_modality_det3d_inferencer.py
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# Copyright (c) OpenMMLab. All rights reserved. | ||
import os.path as osp | ||
import warnings | ||
from typing import Dict, List, Optional, Sequence, Union | ||
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import mmcv | ||
import mmengine | ||
import numpy as np | ||
from mmengine.dataset import Compose | ||
from mmengine.infer.infer import ModelType | ||
from mmengine.structures import InstanceData | ||
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from mmdet3d.registry import INFERENCERS | ||
from mmdet3d.utils import ConfigType | ||
from .base_3d_inferencer import Base3DInferencer | ||
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InstanceList = List[InstanceData] | ||
InputType = Union[str, np.ndarray] | ||
InputsType = Union[InputType, Sequence[InputType]] | ||
PredType = Union[InstanceData, InstanceList] | ||
ImgType = Union[np.ndarray, Sequence[np.ndarray]] | ||
ResType = Union[Dict, List[Dict], InstanceData, List[InstanceData]] | ||
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@INFERENCERS.register_module(name='det3d-multi_modality') | ||
@INFERENCERS.register_module() | ||
class MultiModalityDet3DInferencer(Base3DInferencer): | ||
"""The inferencer of multi-modality detection. | ||
Args: | ||
model (str, optional): Path to the config file or the model name | ||
defined in metafile. For example, it could be | ||
"pointpillars_kitti-3class" or | ||
"configs/pointpillars/pointpillars_hv_secfpn_8xb6-160e_kitti-3d-3class.py". # noqa: E501 | ||
If model is not specified, user must provide the | ||
`weights` saved by MMEngine which contains the config string. | ||
Defaults to None. | ||
weights (str, optional): Path to the checkpoint. If it is not specified | ||
and model is a model name of metafile, the weights will be loaded | ||
from metafile. Defaults to None. | ||
device (str, optional): Device to run inference. If None, the available | ||
device will be automatically used. Defaults to None. | ||
scope (str): The scope of registry. Defaults to 'mmdet3d'. | ||
palette (str): The palette of visualization. Defaults to 'none'. | ||
""" | ||
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preprocess_kwargs: set = set() | ||
forward_kwargs: set = set() | ||
visualize_kwargs: set = { | ||
'return_vis', 'show', 'wait_time', 'draw_pred', 'pred_score_thr', | ||
'img_out_dir' | ||
} | ||
postprocess_kwargs: set = { | ||
'print_result', 'pred_out_file', 'return_datasample' | ||
} | ||
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def __init__(self, | ||
model: Union[ModelType, str, None] = None, | ||
weights: Optional[str] = None, | ||
device: Optional[str] = None, | ||
scope: str = 'mmdet3d', | ||
palette: str = 'none') -> None: | ||
# A global counter tracking the number of frames processed, for | ||
# naming of the output results | ||
self.num_visualized_frames = 0 | ||
super(MultiModalityDet3DInferencer, self).__init__( | ||
model=model, | ||
weights=weights, | ||
device=device, | ||
scope=scope, | ||
palette=palette) | ||
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def _inputs_to_list(self, inputs: Union[dict, list]) -> list: | ||
"""Preprocess the inputs to a list. | ||
Preprocess inputs to a list according to its type: | ||
- list or tuple: return inputs | ||
- dict: the value with key 'points' is | ||
- Directory path: return all files in the directory | ||
- other cases: return a list containing the string. The string | ||
could be a path to file, a url or other types of string according | ||
to the task. | ||
Args: | ||
inputs (Union[dict, list]): Inputs for the inferencer. | ||
Returns: | ||
list: List of input for the :meth:`preprocess`. | ||
""" | ||
return super()._inputs_to_list(inputs, modality_key=['points', 'img']) | ||
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def _init_pipeline(self, cfg: ConfigType) -> Compose: | ||
"""Initialize the test pipeline.""" | ||
pipeline_cfg = cfg.test_dataloader.dataset.pipeline | ||
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load_point_idx = self._get_transform_idx(pipeline_cfg, | ||
'LoadPointsFromFile') | ||
load_mv_img_idx = self._get_transform_idx( | ||
pipeline_cfg, 'LoadMultiViewImageFromFiles') | ||
if load_mv_img_idx != -1: | ||
warnings.warn( | ||
'LoadMultiViewImageFromFiles is not supported yet in the ' | ||
'multi-modality inferencer. Please remove it') | ||
# Now, we only support ``LoadImageFromFile`` as the image loader in the | ||
# original piepline. `LoadMultiViewImageFromFiles` is not supported | ||
# yet. | ||
load_img_idx = self._get_transform_idx(pipeline_cfg, | ||
'LoadImageFromFile') | ||
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if load_point_idx == -1 or load_img_idx == -1: | ||
raise ValueError( | ||
'Both LoadPointsFromFile and LoadImageFromFile must ' | ||
'be specified the pipeline, but LoadPointsFromFile is ' | ||
f'{load_point_idx == -1} and LoadImageFromFile is ' | ||
f'{load_img_idx}') | ||
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load_cfg = pipeline_cfg[load_point_idx] | ||
self.coord_type, self.load_dim = load_cfg['coord_type'], load_cfg[ | ||
'load_dim'] | ||
self.use_dim = list(range(load_cfg['use_dim'])) if isinstance( | ||
load_cfg['use_dim'], int) else load_cfg['use_dim'] | ||
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load_point_args = pipeline_cfg[load_point_idx] | ||
load_point_args.pop('type') | ||
load_img_args = pipeline_cfg[load_img_idx] | ||
load_img_args.pop('type') | ||
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load_idx = min(load_point_idx, load_img_idx) | ||
pipeline_cfg.pop(max(load_point_idx, load_img_idx)) | ||
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pipeline_cfg[load_idx] = dict( | ||
type='MultiModalityDet3DInferencerLoader', | ||
load_point_args=load_point_args, | ||
load_img_args=load_img_args) | ||
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return Compose(pipeline_cfg) | ||
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def visualize(self, | ||
inputs: InputsType, | ||
preds: PredType, | ||
return_vis: bool = False, | ||
show: bool = False, | ||
wait_time: int = 0, | ||
draw_pred: bool = True, | ||
pred_score_thr: float = 0.3, | ||
img_out_dir: str = '') -> Union[List[np.ndarray], None]: | ||
"""Visualize predictions. | ||
Args: | ||
inputs (InputsType): Inputs for the inferencer. | ||
preds (PredType): Predictions of the model. | ||
return_vis (bool): Whether to return the visualization result. | ||
Defaults to False. | ||
show (bool): Whether to display the image in a popup window. | ||
Defaults to False. | ||
wait_time (float): The interval of show (s). Defaults to 0. | ||
draw_pred (bool): Whether to draw predicted bounding boxes. | ||
Defaults to True. | ||
pred_score_thr (float): Minimum score of bboxes to draw. | ||
Defaults to 0.3. | ||
img_out_dir (str): Output directory of visualization results. | ||
If left as empty, no file will be saved. Defaults to ''. | ||
Returns: | ||
List[np.ndarray] or None: Returns visualization results only if | ||
applicable. | ||
""" | ||
if self.visualizer is None or (not show and img_out_dir == '' | ||
and not return_vis): | ||
return None | ||
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if getattr(self, 'visualizer') is None: | ||
raise ValueError('Visualization needs the "visualizer" term' | ||
'defined in the config, but got None.') | ||
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results = [] | ||
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for single_input, pred in zip(inputs, preds): | ||
points_input = single_input['points'] | ||
if isinstance(points_input, str): | ||
pts_bytes = mmengine.fileio.get(points_input) | ||
points = np.frombuffer(pts_bytes, dtype=np.float32) | ||
points = points.reshape(-1, self.load_dim) | ||
points = points[:, self.use_dim] | ||
pc_name = osp.basename(points_input).split('.bin')[0] | ||
pc_name = f'{pc_name}.png' | ||
elif isinstance(points_input, np.ndarray): | ||
points = points_input.copy() | ||
pc_num = str(self.num_visualized_frames).zfill(8) | ||
pc_name = f'pc_{pc_num}.png' | ||
else: | ||
raise ValueError('Unsupported input type: ' | ||
f'{type(points_input)}') | ||
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o3d_save_path = osp.join(img_out_dir, pc_name) \ | ||
if img_out_dir != '' else None | ||
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img_input = single_input['img'] | ||
if isinstance(single_input['img'], str): | ||
img_bytes = mmengine.fileio.get(img_input) | ||
img = mmcv.imfrombytes(img_bytes) | ||
img = img[:, :, ::-1] | ||
img_name = osp.basename(img_input) | ||
elif isinstance(img_input, np.ndarray): | ||
img = img_input.copy() | ||
img_num = str(self.num_visualized_frames).zfill(8) | ||
img_name = f'{img_num}.jpg' | ||
else: | ||
raise ValueError('Unsupported input type: ' | ||
f'{type(img_input)}') | ||
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out_file = osp.join(img_out_dir, img_name) if img_out_dir != '' \ | ||
else None | ||
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data_input = dict(points=points, img=img) | ||
self.visualizer.add_datasample( | ||
pc_name, | ||
data_input, | ||
pred, | ||
show=show, | ||
wait_time=wait_time, | ||
draw_gt=False, | ||
draw_pred=draw_pred, | ||
pred_score_thr=pred_score_thr, | ||
o3d_save_path=o3d_save_path, | ||
out_file=out_file, | ||
vis_task='multi-modality_det', | ||
) | ||
results.append(points) | ||
self.num_visualized_frames += 1 | ||
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return results |
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