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tfm.vision.configs.semantic_segmentation.SemanticSegmentationModel

Semantic segmentation model config.

Inherits From: Config, ParamsDict

BUILDER

default_params Dataclass field
restrictions Dataclass field
num_classes Dataclass field
input_size Dataclass field
min_level Dataclass field
max_level Dataclass field
head Dataclass field
backbone Dataclass field
decoder Dataclass field
mask_scoring_head Dataclass field
norm_activation Dataclass field

Methods

as_dict

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Returns a dict representation of params_dict.ParamsDict.

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

from_args

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Builds a config from the given list of arguments.

from_json

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Wrapper for from_yaml.

from_yaml

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get

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Accesses through built-in dictionary get method.

lock

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Makes the ParamsDict immutable.

override

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

validate

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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 specfiies 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__

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Implements the membership test operator.

__eq__

IMMUTABLE_TYPES (<class 'str'>, <class 'int'>, <class 'float'>, <class 'bool'>, <class 'NoneType'>)
RESERVED_ATTR ['_locked', '_restrictions']
SEQUENCE_TYPES (<class 'list'>, <class 'tuple'>)
backbone Instance of tfm.vision.configs.backbones.Backbone
decoder Instance of official.vision.configs.decoders.Decoder
default_params None
head Instance of tfm.vision.configs.semantic_segmentation.SegmentationHead
mask_scoring_head None
max_level 6
min_level 3
norm_activation Instance of tfm.vision.configs.common.NormActivation
num_classes 0
restrictions None