tfm.vision.configs.common.TFLitePostProcessingConfig

TFLite Post Processing config for inference.

Inherits From: Config, ParamsDict

tfm.vision.configs.common.TFLitePostProcessingConfig(
    default_params: dataclasses.InitVar[Optional[Mapping[str, Any]]] = None,
    restrictions: dataclasses.InitVar[Optional[List[str]]] = None,
    max_detections: int = 200,
    max_classes_per_detection: int = 5,
    use_regular_nms: bool = False,
    nms_score_threshold: float = 0.1,
    nms_iou_threshold: float = 0.5,
    normalize_anchor_coordinates: Optional[bool] = False,
    omit_nms: Optional[bool] = False,
    detections_per_class: Optional[int] = 5,
    y_scale: float = 1.0,
    x_scale: float = 1.0,
    w_scale: float = 1.0,
    h_scale: float = 1.0
)

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
max_detections Dataclass field
max_classes_per_detection Dataclass field
use_regular_nms Dataclass field
nms_score_threshold Dataclass field
nms_iou_threshold Dataclass field
normalize_anchor_coordinates Dataclass field
omit_nms Dataclass field
detections_per_class Dataclass field
y_scale Dataclass field
x_scale Dataclass field
w_scale Dataclass field
h_scale 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

View source

@classmethod
from_yaml(
    file_path: str
)

get

View source

get(
    key, value=None
)

Accesses through built-in dictionary get method.

lock

View source

lock()

Makes the ParamsDict immutable.

override

View source

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

View source

replace(
    **kwargs
)

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

validate

View source

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'>)
default_params None
detections_per_class 5
h_scale 1.0
max_classes_per_detection 5
max_detections 200
nms_iou_threshold 0.5
nms_score_threshold 0.1
normalize_anchor_coordinates False
omit_nms False
restrictions None
use_regular_nms False
w_scale 1.0
x_scale 1.0
y_scale 1.0