option to occlude all channels simultaneously #3543
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Signed-off-by: Richard Brown <33289025+rijobro@users.noreply.github.com>
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wyli
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Jan 13, 2022
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* option to occlude all channels simultaneously
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Our current implementation of occlusion sensitivity occludes each channel individually. This PR allows all channels to be occluded simultaneously, which is useful for eg with RGB images, where intuitively it makes sense to block them together.
If
per_channelisTrue(previous implementation, current default for backwards compatibility), the output shape is:B, C, H, W, [D], num_classes.When
per_channelisFalse, output shape is:B, 1, H, W, [D], num_classesmaking it easier to visualise.