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local THNN = require 'nn.THNN'
local SpatialDilatedConvolution, parent = torch.class('nn.SpatialDilatedConvolution', 'nn.SpatialConvolution')
function SpatialDilatedConvolution:__init(nInputPlane, nOutputPlane, kW, kH, dW, dH, padW, padH, dilationW, dilationH)
parent.__init(self, nInputPlane, nOutputPlane, kW, kH, dW, dH, padW, padH)
self.dilationW = dilationW or 1
self.dilationH = dilationH or 1
end
function SpatialDilatedConvolution:updateOutput(input)
self.finput = self.finput or self.weight.new()
self.fgradInput = self.fgradInput or self.weight.new()
input.THNN.SpatialDilatedConvolution_updateOutput(
input:cdata(),
self.output:cdata(),
self.weight:cdata(),
THNN.optionalTensor(self.bias),
self.finput:cdata(),
self.fgradInput:cdata(),
self.kW, self.kH,
self.dW, self.dH,
self.padW, self.padH,
self.dilationW, self.dilationH
)
return self.output
end
function SpatialDilatedConvolution:updateGradInput(input, gradOutput)
if self.gradInput then
self.fgradInput = self.fgradInput or self.weight.new()
input.THNN.SpatialDilatedConvolution_updateGradInput(
input:cdata(),
gradOutput:cdata(),
self.gradInput:cdata(),
self.weight:cdata(),
self.finput:cdata(),
self.kW, self.kH,
self.dW, self.dH,
self.padW, self.padH,
self.dilationW, self.dilationH
)
return self.gradInput
end
end
function SpatialDilatedConvolution:accGradParameters(input, gradOutput, scale)
scale = scale or 1
self.fgradInput = self.fgradInput or self.weight.new()
input.THNN.SpatialDilatedConvolution_accGradParameters(
input:cdata(),
gradOutput:cdata(),
self.gradWeight:cdata(),
THNN.optionalTensor(self.gradBias),
self.finput:cdata(),
self.fgradInput:cdata(),
self.kW, self.kH,
self.dW, self.dH,
self.padW, self.padH,
self.dilationW, self.dilationH,
scale
)
end
function SpatialDilatedConvolution:__tostring__()
local s = string.format('%s(%d -> %d, %dx%d', torch.type(self),
self.nInputPlane, self.nOutputPlane, self.kW, self.kH)
if self.dW ~= 1 or self.dH ~= 1 or self.padW ~= 0 or self.padH ~= 0 then
s = s .. string.format(', %d,%d', self.dW, self.dH)
end
if (self.padW or self.padH) and (self.padW ~= 0 or self.padH ~= 0) then
s = s .. ', ' .. self.padW .. ',' .. self.padH
end
s = s .. ', ' .. self.dilationW .. ',' .. self.dilationH
if self.bias then
return s .. ')'
else
return s .. ') without bias'
end
end
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