make_svhn.lua

os.execute('wget http://torch7.s3-website-us-east-1.amazonaws.com/data/svhn.t7.tgz')
os.execute('tar xvzf svhn.t7.tgz')
os.execute('rm svhn.t7.tgz')

local train = torch.load('./housenumbers/train_32x32.t7','ascii')
local extra = torch.load('./housenumbers/extra_32x32.t7','ascii')
local test  = torch.load('./housenumbers/test_32x32.t7', 'ascii')

local dataset = {
   trainData = {
      data = torch.cat(train.X:transpose(3,4), extra.X:transpose(3,4),1),
      size = function() return train.X:size(1) + extra.X:size(1) end,
      labels = torch.cat(train.y[1], extra.y[1], 1),
   },
   testData = {
      data = test.X:transpose(3,4),
      size = function() return test.X:size(1) end,
      labels = test.y[1],
   }
}

torch.save('svhn.t7',dataset)