/
keypoint.py
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/
keypoint.py
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# Copyright 2023 The MediaPipe Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Keypoint data class."""
import dataclasses
from typing import Any, Optional
from mediapipe.framework.formats import location_data_pb2
from mediapipe.tasks.python.core.optional_dependencies import doc_controls
_RelativeKeypointProto = location_data_pb2.LocationData.RelativeKeypoint
@dataclasses.dataclass
class NormalizedKeypoint:
"""A normalized keypoint.
Normalized keypoint represents a point in 2D space with x, y coordinates.
x and y are normalized to [0.0, 1.0] by the image width and height
respectively.
Attributes:
x: The x coordinates of the normalized keypoint.
y: The y coordinates of the normalized keypoint.
label: The optional label of the keypoint.
score: The score of the keypoint.
"""
x: Optional[float] = None
y: Optional[float] = None
label: Optional[str] = None
score: Optional[float] = None
@doc_controls.do_not_generate_docs
def to_pb2(self) -> _RelativeKeypointProto:
"""Generates a RelativeKeypoint protobuf object."""
return _RelativeKeypointProto(
x=self.x, y=self.y, keypoint_label=self.label, score=self.score
)
@classmethod
@doc_controls.do_not_generate_docs
def create_from_pb2(
cls, pb2_obj: _RelativeKeypointProto
) -> 'NormalizedKeypoint':
"""Creates a `NormalizedKeypoint` object from the given protobuf object."""
return NormalizedKeypoint(
x=pb2_obj.x,
y=pb2_obj.y,
label=pb2_obj.keypoint_label,
score=pb2_obj.score,
)
def __eq__(self, other: Any) -> bool:
"""Checks if this object is equal to the given object.
Args:
other: The object to be compared with.
Returns:
True if the objects are equal.
"""
if not isinstance(other, NormalizedKeypoint):
return False
return self.to_pb2().__eq__(other.to_pb2())