data

FeatureInfo

FeatureInfo(stage: int, num_channels: int, reduction: int)

source edit

Specification of one stage emitted by a feature-extracting backbone.

Used by detection / segmentation heads that consume a feature pyramid: each entry describes the channel count and spatial down-sampling factor of one backbone stage relative to the input.

Attributes

stageint

Zero-based stage index, in the order the backbone emits features (typically deepening from stage 0 toward higher receptive field).

num_channelsint

Channel count of the feature map at this stage.

reductionint

Spatial down-sampling factor vs the network input — e.g. 4, 8, 16, 32 for the canonical CNN stage taps.

Notes

The layout is timm-compatible: detection heads that consume timm backbones drop in unchanged. See BackboneMixin for the protocol that produces a list[FeatureInfo].

Examples

>>> info = FeatureInfo(stage=3, num_channels=512, reduction=32)
>>> info.reduction
32

Used by 30

… 18 more

Constructors

dunder

init

→None

__init__(stage: int, num_channels: int, reduction: int)

source edit

data

FeatureInfo

FeatureInfo(stage: int, num_channels: int, reduction: int)

source edit

Specification of one stage emitted by a feature-extracting backbone.

Used by detection / segmentation heads that consume a feature pyramid: each entry describes the channel count and spatial down-sampling factor of one backbone stage relative to the input.

Attributes

stageint

Zero-based stage index, in the order the backbone emits features (typically deepening from stage 0 toward higher receptive field).

num_channelsint

Channel count of the feature map at this stage.

reductionint

Spatial down-sampling factor vs the network input — e.g. 4, 8, 16, 32 for the canonical CNN stage taps.

Notes

The layout is timm-compatible: detection heads that consume timm backbones drop in unchanged. See BackboneMixin for the protocol that produces a list[FeatureInfo].

Examples

>>> info = FeatureInfo(stage=3, num_channels=512, reduction=32)
>>> info.reduction
32

Used by 30

… 18 more

Constructors

dunder

init

→None

__init__(stage: int, num_channels: int, reduction: int)

source edit