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# Copyright (C) 2019-2020 Intel Corporation
#
# SPDX-License-Identifier: MIT
# pylint: disable=no-self-use
import json
import numpy as np
import os
import os.path as osp
from datumaro.components.converter import Converter
from datumaro.components.extractor import (
DEFAULT_SUBSET_NAME, Annotation, _Shape,
Label, Mask, RleMask, Points, Polygon, PolyLine, Bbox, Caption,
LabelCategories, MaskCategories, PointsCategories
)
from datumaro.util import cast
import pycocotools.mask as mask_utils
from .format import DatumaroPath
class _SubsetWriter:
def __init__(self, name, context):
self._name = name
self._context = context
self._data = {
'info': {},
'categories': {},
'items': [],
}
@property
def categories(self):
return self._data['categories']
@property
def items(self):
return self._data['items']
def write_item(self, item):
annotations = []
item_desc = {
'id': item.id,
'annotations': annotations,
}
if item.attributes:
item_desc['attr'] = item.attributes
if item.path:
item_desc['path'] = item.path
if item.has_image:
path = item.image.path
if self._context._save_images:
path = self._context._make_image_filename(item)
self._context._save_image(item, path)
item_desc['image'] = {
'size': item.image.size,
'path': path,
}
self.items.append(item_desc)
for ann in item.annotations:
if isinstance(ann, Label):
converted_ann = self._convert_label_object(ann)
elif isinstance(ann, Mask):
converted_ann = self._convert_mask_object(ann)
elif isinstance(ann, Points):
converted_ann = self._convert_points_object(ann)
elif isinstance(ann, PolyLine):
converted_ann = self._convert_polyline_object(ann)
elif isinstance(ann, Polygon):
converted_ann = self._convert_polygon_object(ann)
elif isinstance(ann, Bbox):
converted_ann = self._convert_bbox_object(ann)
elif isinstance(ann, Caption):
converted_ann = self._convert_caption_object(ann)
else:
raise NotImplementedError()
annotations.append(converted_ann)
def write_categories(self, categories):
for ann_type, desc in categories.items():
if isinstance(desc, LabelCategories):
converted_desc = self._convert_label_categories(desc)
elif isinstance(desc, MaskCategories):
converted_desc = self._convert_mask_categories(desc)
elif isinstance(desc, PointsCategories):
converted_desc = self._convert_points_categories(desc)
else:
raise NotImplementedError()
self.categories[ann_type.name] = converted_desc
def write(self, save_dir):
with open(osp.join(save_dir, '%s.json' % (self._name)), 'w') as f:
json.dump(self._data, f)
def _convert_annotation(self, obj):
assert isinstance(obj, Annotation)
ann_json = {
'id': cast(obj.id, int),
'type': cast(obj.type.name, str),
'attributes': obj.attributes,
'group': cast(obj.group, int, 0),
}
return ann_json
def _convert_label_object(self, obj):
converted = self._convert_annotation(obj)
converted.update({
'label_id': cast(obj.label, int),
})
return converted
def _convert_mask_object(self, obj):
converted = self._convert_annotation(obj)
if isinstance(obj, RleMask):
rle = obj.rle
else:
rle = mask_utils.encode(
np.require(obj.image, dtype=np.uint8, requirements='F'))
converted.update({
'label_id': cast(obj.label, int),
'rle': {
# serialize as compressed COCO mask
'counts': rle['counts'].decode('ascii'),
'size': list(int(c) for c in rle['size']),
},
'z_order': obj.z_order,
})
return converted
def _convert_shape_object(self, obj):
assert isinstance(obj, _Shape)
converted = self._convert_annotation(obj)
converted.update({
'label_id': cast(obj.label, int),
'points': [float(p) for p in obj.points],
'z_order': obj.z_order,
})
return converted
def _convert_polyline_object(self, obj):
return self._convert_shape_object(obj)
def _convert_polygon_object(self, obj):
return self._convert_shape_object(obj)
def _convert_bbox_object(self, obj):
converted = self._convert_shape_object(obj)
converted.pop('points', None)
converted['bbox'] = [float(p) for p in obj.get_bbox()]
return converted
def _convert_points_object(self, obj):
converted = self._convert_shape_object(obj)
converted.update({
'visibility': [int(v.value) for v in obj.visibility],
})
return converted
def _convert_caption_object(self, obj):
converted = self._convert_annotation(obj)
converted.update({
'caption': cast(obj.caption, str),
})
return converted
def _convert_label_categories(self, obj):
converted = {
'labels': [],
}
for label in obj.items:
converted['labels'].append({
'name': cast(label.name, str),
'parent': cast(label.parent, str),
})
return converted
def _convert_mask_categories(self, obj):
converted = {
'colormap': [],
}
for label_id, color in obj.colormap.items():
converted['colormap'].append({
'label_id': int(label_id),
'r': int(color[0]),
'g': int(color[1]),
'b': int(color[2]),
})
return converted
def _convert_points_categories(self, obj):
converted = {
'items': [],
}
for label_id, item in obj.items.items():
converted['items'].append({
'label_id': int(label_id),
'labels': [cast(label, str) for label in item.labels],
'joints': [list(map(int, j)) for j in item.joints],
})
return converted
class DatumaroConverter(Converter):
DEFAULT_IMAGE_EXT = DatumaroPath.IMAGE_EXT
def apply(self):
os.makedirs(self._save_dir, exist_ok=True)
images_dir = osp.join(self._save_dir, DatumaroPath.IMAGES_DIR)
os.makedirs(images_dir, exist_ok=True)
self._images_dir = images_dir
annotations_dir = osp.join(self._save_dir, DatumaroPath.ANNOTATIONS_DIR)
os.makedirs(annotations_dir, exist_ok=True)
self._annotations_dir = annotations_dir
subsets = {s: _SubsetWriter(s, self) for s in self._extractor.subsets()}
for subset, writer in subsets.items():
writer.write_categories(self._extractor.categories())
for item in self._extractor:
subset = item.subset or DEFAULT_SUBSET_NAME
writer = subsets[subset]
writer.write_item(item)
for subset, writer in subsets.items():
writer.write(annotations_dir)
def _save_image(self, item, path=None):
super()._save_image(item,
osp.join(self._images_dir, self._make_image_filename(item)))
class DatumaroProjectConverter(Converter):
@classmethod
def convert(cls, extractor, save_dir, **kwargs):
os.makedirs(save_dir, exist_ok=True)
from datumaro.components.project import Project
project = Project.generate(save_dir,
config=kwargs.pop('project_config', None))
DatumaroConverter.convert(extractor,
save_dir=osp.join(
project.config.project_dir, project.config.dataset_dir),
**kwargs) |