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ErodeMask and dilating mask #286

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tenres opened this issue May 10, 2024 · 0 comments
Open

ErodeMask and dilating mask #286

tenres opened this issue May 10, 2024 · 0 comments

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@tenres
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tenres commented May 10, 2024

In the Elastix documentations, there are mentions of dilating the fixed image mask when using the mask to focus the registration on an ROI, but it is not explained well. Perhaps the dilation is useful when we want to include the mask edge as part of the registration? For e.g., if the mask is a segmentation of the lung, we would like the lung edge to be part of the registration as it would help to match the lungs to match? If so, how important is it for the registration and how much should the dilation be? There is also the ErodeMask feature, when set to true, avoids artificial edges from influencing registration during multi resolution procedure. Does that mean dilating mask and ErodeMask perform the opposite function? One is intended to include the edges of the mask but the other intended to exclude them? Thanks!

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