tfm.vision.configs.common.SSDRandomCrop

Configuration for SSDRandomCrop.

Inherits From: Config, ParamsDict

tfm.vision.configs.common.SSDRandomCrop(
    default_params: dataclasses.InitVar[Optional[Mapping[str, Any]]] = None,
    restrictions: dataclasses.InitVar[Optional[List[str]]] = None,
    ssd_random_crop_params: Sequence[tfm.vision.configs.common.SSDRandomCropParam] = dataclasses.field(default_factory=lambda : (SSDRandomCropParam(\n    min_object_covered=0.0), SSDRandomCropParam(min_object_covered=0.1),\n    SSDRandomCropParam(min_object_covered=0.3), SSDRandomCropParam(\n    min_object_covered=0.5), SSDRandomCropParam(min_object_covered=0.7),\n    SSDRandomCropParam(min_object_covered=0.9), SSDRandomCropParam(\n    min_object_covered=1.0))),
    aspect_ratio_range: tuple[float, float] = tfm.vision.configs.common.SSDRandomCrop.aspect_ratio_range,
    area_range: tuple[float, float] = tfm.vision.configs.common.SSDRandomCrop.area_range
)

Liu et al., SSD: Single shot multibox detector https://arxiv.org/abs/1512.02325

default_params a Python dict or another ParamsDict object including the default parameters to initialize.
restrictions a list of strings, which define a list of restrictions to ensure the consistency of different parameters internally. Each restriction string is defined as a binary relation with a set of operators, including {'==', '!=', '<', '<=', '>', '>='}.

BUILDER

default_params Dataclass field
restrictions Dataclass field
ssd_random_crop_params Dataclass field
aspect_ratio_range Dataclass field
area_range Dataclass field

Methods

as_dict

View source

as_dict()

Returns a dict representation of params_dict.ParamsDict.

For the nested params_dict.ParamsDict, a nested dict will be returned.

from_args

View source

@classmethod
from_args(
    *args, **kwargs
)

Builds a config from the given list of arguments.

from_json

View source

@classmethod
from_json(
    file_path: str
)

Wrapper for from_yaml.

from_yaml

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@classmethod
from_yaml(
    file_path: str
)

get

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get(
    key, value=None
)

Accesses through built-in dictionary get method.

lock

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lock()

Makes the ParamsDict immutable.

override

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override(
    override_params, is_strict=True
)

Override the ParamsDict with a set of given params.

Args
override_params a dict or a ParamsDict specifying the parameters to be overridden.
is_strict a boolean specifying whether override is strict or not. If True, keys in override_params must be present in the ParamsDict. If False, keys in override_params can be different from what is currently defined in the ParamsDict. In this case, the ParamsDict will be extended to include the new keys.

replace

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replace(
    **kwargs
)

Overrides/returns a unlocked copy with the current config unchanged.

validate

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validate()

Validate the parameters consistency based on the restrictions.

This method validates the internal consistency using the pre-defined list of restrictions. A restriction is defined as a string which specifies a binary operation. The supported binary operations are {'==', '!=', '<', '<=', '>', '>='}. Note that the meaning of these operators are consistent with the underlying Python immplementation. Users should make sure the define restrictions on their type make sense.

For example, for a ParamsDict like the following

a:
  a1: 1
  a2: 2
b:
  bb:
    bb1: 10
    bb2: 20
  ccc:
    a1: 1
    a3: 3

one can define two restrictions like this ['a.a1 == b.ccc.a1', 'a.a2 <= b.bb.bb2']

What it enforces are

  • a.a1 = 1 == b.ccc.a1 = 1
  • a.a2 = 2 <= b.bb.bb2 = 20

Raises
KeyError if any of the following happens (1) any of parameters in any of restrictions is not defined in ParamsDict, (2) any inconsistency violating the restriction is found.
ValueError if the restriction defined in the string is not supported.

__contains__

View source

__contains__(
    key
)

Implements the membership test operator.

__eq__

__eq__(
    other
)

Return self==value.

IMMUTABLE_TYPES (<class 'str'>, <class 'int'>, <class 'float'>, <class 'bool'>, <class 'NoneType'>)
RESERVED_ATTR ['_locked', '_restrictions']
SEQUENCE_TYPES (<class 'list'>, <class 'tuple'>)
area_range (0.1, 1.0)
aspect_ratio_range (0.5, 2.0)
default_params None
restrictions None