eigen_cam
EigenCAM
¶
Bases: Trace
A trace which draws EigenCAM heatmaps on top of images.
These are useful for visualizing the outputs of the feature extractor component of a model. They are relatively insensitive to adversarial attacks, so don't use them to try and detect those. See https://arxiv.org/abs/2008.00299 for more details.
Parameters:
Name | Type | Description | Default |
---|---|---|---|
images |
str
|
The key corresponding to images onto which to draw the CAM outputs. |
required |
activations |
str
|
The key corresponding to outputs from a convolution layer from which to draw the CAM outputs. You can easily extract these from any model by using the 'intermediate_layers' variable in a ModelOp. |
required |
n_components |
Union[int, float]
|
How many principal components to visualize. If you pass a float between 0 and 1 it will instead visualize however many components are required in order to capture the corresponding percentage of the variance in the image. |
3
|
n_samples |
Optional[int]
|
How many images in total to display every epoch (or None to display all available images). |
5
|
downsize |
Optional[int]
|
Whether to downsize the inputs before svd decomposition in order to speed up processing. If provided,
the inputs will be proportionally downscaled such that their longest axis length is equal to the |
None
|
labels |
Optional[str]
|
The key corresponding to the true labels of the images to be visualized. |
None
|
preds |
Optional[str]
|
The key corresponding to the model prediction for each image. |
None
|
label_mapping |
Optional[Dict[str, Any]]
|
{class_string: model_output_value}. |
None
|
outputs |
str
|
The key into which to write the eigencam images. |
'eigencam'
|
mode |
Union[None, str, Iterable[str]]
|
What mode(s) to execute this Op in. For example, "train", "eval", "test", or "infer". To execute regardless of mode, pass None. To execute in all modes except for a particular one, you can pass an argument like "!infer" or "!train". |
'!train'
|
ds_id |
Union[None, str, Iterable[str]]
|
What dataset id(s) to execute this Trace in. To execute regardless of ds_id, pass None. To execute in all ds_ids except for a particular one, you can pass an argument like "!ds1". |
None
|
Source code in fastestimator/fastestimator/trace/xai/eigen_cam.py
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