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local VolumetricReplicationPadding, parent =
torch.class('nn.VolumetricReplicationPadding', 'nn.Module')
function VolumetricReplicationPadding:__init(pleft, pright, ptop, pbottom,
pfront, pback)
parent.__init(self)
self.pleft = pleft
self.pright = pright or self.pleft
self.ptop = ptop or self.pleft
self.pbottom = pbottom or self.pleft
self.pfront = pfront or self.pleft
self.pback = pback or self.pleft
end
function VolumetricReplicationPadding:updateOutput(input)
if input:dim() == 4 or input:dim() == 5 then
input.THNN.VolumetricReplicationPadding_updateOutput(
input:cdata(), self.output:cdata(),
self.pleft, self.pright, self.ptop, self.pbottom, self.pfront,
self.pback)
else
error('input must be 4 or 5-dimensional')
end
return self.output
end
function VolumetricReplicationPadding:updateGradInput(input, gradOutput)
if input:dim() == 4 and gradOutput:dim() == 4 then
assert(input:size(1) == gradOutput:size(1)
and input:size(2) + self.pfront + self.pback == gradOutput:size(2)
and input:size(3) + self.ptop + self.pbottom == gradOutput:size(3)
and input:size(4) + self.pleft + self.pright == gradOutput:size(4),
'input and gradOutput must be compatible in size')
elseif input:dim() == 5 and gradOutput:dim() == 5 then
assert(input:size(1) == gradOutput:size(1)
and input:size(2) == gradOutput:size(2)
and input:size(3) + self.pfront + self.pback == gradOutput:size(3)
and input:size(4) + self.ptop + self.pbottom == gradOutput:size(4)
and input:size(5) + self.pleft + self.pright == gradOutput:size(5),
'input and gradOutput must be compatible in size')
else
error(
[[input and gradOutput must be 4 or 5-dimensional
and have equal number of dimensions]]
)
end
input.THNN.VolumetricReplicationPadding_updateGradInput(
input:cdata(), gradOutput:cdata(), self.gradInput:cdata(),
self.pleft, self.pright, self.ptop, self.pbottom, self.pfront, self.pback)
return self.gradInput
end
function VolumetricReplicationPadding:__tostring__()
return torch.type(self) ..
string.format('(left=%d, right=%d, top=%d, bottom=%d, front=%d, back=%d)',
self.pleft, self.pright, self.ptop, self.pbottom,
self.pfront, self.pback)
end
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