add srresnet_12l
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@ -438,6 +438,63 @@ function srcnn.srresnet_2x(backend, ch)
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return model
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end
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-- large version of srresnet_2x. current best model but slow.
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function srcnn.srresnet_12l(backend, ch)
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local function skip(backend, i, o)
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local con = nn.Concat(2)
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local conv = nn.Sequential()
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conv:add(SpatialConvolution(backend, i, o, 3, 3, 1, 1, 1, 1))
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conv:add(ReLU(backend))
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-- depth concat
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con:add(conv)
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con:add(nn.Identity()) -- skip
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return con
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end
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local function resblock(backend, i, o)
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local seq = nn.Sequential()
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local con = nn.ConcatTable()
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local conv = nn.Sequential()
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conv:add(SpatialConvolution(backend, i, o, 3, 3, 1, 1, 0, 0))
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conv:add(nn.LeakyReLU(0.1, true))
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conv:add(SpatialConvolution(backend, o, o, 3, 3, 1, 1, 0, 0))
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conv:add(nn.LeakyReLU(0.1, true))
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con:add(conv)
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if i == o then
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con:add(nn.SpatialZeroPadding(-2, -2, -2, -2)) -- identity + de-padding
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else
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local seq = nn.Sequential()
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seq:add(SpatialConvolution(backend, i, o, 1, 1, 1, 1, 0, 0))
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seq:add(nn.SpatialZeroPadding(-2, -2, -2, -2))
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con:add(seq)
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end
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seq:add(con)
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seq:add(nn.CAddTable())
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return seq
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end
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local model = nn.Sequential()
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model:add(SpatialConvolution(backend, ch, 32, 3, 3, 1, 1, 0, 0))
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model:add(nn.LeakyReLU(0.1, true))
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model:add(resblock(backend, 32, 64))
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model:add(resblock(backend, 64, 64))
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model:add(resblock(backend, 64, 128))
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model:add(resblock(backend, 128, 128))
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model:add(resblock(backend, 128, 256))
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model:add(resblock(backend, 256, 256))
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model:add(SpatialFullConvolution(backend, 256, ch, 4, 4, 2, 2, 3, 3):noBias())
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model:add(w2nn.InplaceClip01())
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model:add(nn.View(-1):setNumInputDims(3))
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model.w2nn_arch_name = "srresnet_12l"
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model.w2nn_offset = 28
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model.w2nn_scale_factor = 2
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model.w2nn_resize = true
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model.w2nn_channels = ch
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--model:cuda()
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--print(model:forward(torch.Tensor(32, ch, 92, 92):uniform():cuda()):size())
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return model
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end
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-- for segmentation
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function srcnn.fcn_v1(backend, ch)
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-- input_size = 120
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@ -516,4 +573,5 @@ local model = srcnn.fcn_v1("cunn", 3):cuda()
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print(model:forward(torch.Tensor(1, 3, 108, 108):zero():cuda()):size())
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print(model)
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--]]
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return srcnn
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