torchvision.models.segmentation.fcn_resnet50(*, weights: Optional[FCN_ResNet50_Weights] = None, progress: bool = True, num_classes: Optional[int] = None, aux_loss: Optional[bool] = None, weights_backbone: Optional[ResNet50_Weights] = ResNet50_Weights.IMAGENET1K_V1, **kwargs: Any) FCN[source]

Fully-Convolutional Network model with a ResNet-50 backbone from the Fully Convolutional Networks for Semantic Segmentation paper.


The segmentation module is in Beta stage, and backward compatibility is not guaranteed.

  • weights (FCN_ResNet50_Weights, optional) – The pretrained weights to use. See FCN_ResNet50_Weights below for more details, and possible values. By default, no pre-trained weights are used.

  • progress (bool, optional) – If True, displays a progress bar of the download to stderr. Default is True.

  • num_classes (int, optional) – number of output classes of the model (including the background).

  • aux_loss (bool, optional) – If True, it uses an auxiliary loss.

  • weights_backbone (ResNet50_Weights, optional) – The pretrained weights for the backbone.

  • **kwargs – parameters passed to the torchvision.models.segmentation.fcn.FCN base class. Please refer to the source code for more details about this class.

class torchvision.models.segmentation.FCN_ResNet50_Weights(value)[source]

An enumeration.

Examples using FCN_ResNet50_Weights:

Visualization utilities

Visualization utilities

Examples using fcn_resnet50:

Visualization utilities

Visualization utilities


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