Experiment



In [1]:

    
using Images
using ImageMagick
using DataFrames
using FileIO
using Colors



In [2]:

    
img = load("/raided/datasets/sketches_png/png/airplane/1.png")









    Out[2]:



In [3]:

    
dump(img)









    



Array{ColorTypes.Gray{FixedPointNumbers.Normed{UInt8,8}}}((1111,1111))
  1: ColorTypes.Gray{FixedPointNumbers.Normed{UInt8,8}}
    val: FixedPointNumbers.Normed{UInt8,8}
      i: UInt8 255
  2: ColorTypes.Gray{FixedPointNumbers.Normed{UInt8,8}}
    val: FixedPointNumbers.Normed{UInt8,8}
      i: UInt8 255
  3: ColorTypes.Gray{FixedPointNumbers.Normed{UInt8,8}}
    val: FixedPointNumbers.Normed{UInt8,8}
      i: UInt8 255
  4: ColorTypes.Gray{FixedPointNumbers.Normed{UInt8,8}}
    val: FixedPointNumbers.Normed{UInt8,8}
      i: UInt8 255
  5: ColorTypes.Gray{FixedPointNumbers.Normed{UInt8,8}}
    val: FixedPointNumbers.Normed{UInt8,8}
      i: UInt8 255
  ...
  1234317: ColorTypes.Gray{FixedPointNumbers.Normed{UInt8,8}}
    val: FixedPointNumbers.Normed{UInt8,8}
      i: UInt8 255
  1234318: ColorTypes.Gray{FixedPointNumbers.Normed{UInt8,8}}
    val: FixedPointNumbers.Normed{UInt8,8}
      i: UInt8 255
  1234319: ColorTypes.Gray{FixedPointNumbers.Normed{UInt8,8}}
    val: FixedPointNumbers.Normed{UInt8,8}
      i: UInt8 255
  1234320: ColorTypes.Gray{FixedPointNumbers.Normed{UInt8,8}}
    val: FixedPointNumbers.Normed{UInt8,8}
      i: UInt8 255
  1234321: ColorTypes.Gray{FixedPointNumbers.Normed{UInt8,8}}
    val: FixedPointNumbers.Normed{UInt8,8}
      i: UInt8 255



In [4]:

    
summary(img)









    Out[4]:





"1111×1111 Array{Gray{N0f8},2}"



In [5]:

    
img[2,2]









    Out[5]:



In [6]:

    
for a in img
    println(a.val)
    break
end



In [7]:

    
eltype(img)









    Out[7]:





ColorTypes.Gray{FixedPointNumbers.Normed{UInt8,8}}



In [8]:

    
test = filter(x->x.val==0, img)









    Out[8]:



In [9]:

    
sizeof(test)









    Out[9]:





15260



In [10]:

    
sizeof(img)









    Out[10]:





1234321



In [11]:

    
img = map(x-> x.val, img)









    Out[11]:





1111×1111 Array{N0f8,2}:
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8  …  1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8     1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8     1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8     1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8     1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8  …  1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8     1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8     1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8     1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8     1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8  …  1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8     1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8     1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 ⋮                                   ⋱                             ⋮      
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8     1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8  …  1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8     1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8     1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8     1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8     1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8  …  1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8     1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8     1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8     1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8     1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8  …  1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8



In [12]:

    
image = reshape(img, (1234321,1))









    Out[12]:





1234321×1 Array{N0f8,2}:
 1.0N0f8
 1.0N0f8
 1.0N0f8
 1.0N0f8
 1.0N0f8
 1.0N0f8
 1.0N0f8
 1.0N0f8
 1.0N0f8
 1.0N0f8
 1.0N0f8
 1.0N0f8
 1.0N0f8
 ⋮      
 1.0N0f8
 1.0N0f8
 1.0N0f8
 1.0N0f8
 1.0N0f8
 1.0N0f8
 1.0N0f8
 1.0N0f8
 1.0N0f8
 1.0N0f8
 1.0N0f8
 1.0N0f8



In [13]:

    
df = convert(DataFrame, image)
head(df)









    Out[13]:




x1
1 1.0N0f8
2 1.0N0f8
3 1.0N0f8
4 1.0N0f8
5 1.0N0f8
6 1.0N0f8



In [14]:

    
a = stack(df)
head(a)









    Out[14]:




variable value x1



In [15]:

    
unstack(a, :x1)









    



MethodError: no method matching unstack(::DataFrames.DataFrame, ::Symbol)
Closest candidates are:
  unstack(::DataFrames.AbstractDataFrame, ::Any, ::Any) at /home/maaster/.julia/v0.5/DataFrames/src/abstractdataframe/reshape.jl:192
  unstack(::DataFrames.AbstractDataFrame, ::Any, ::Any, ::Any) at /home/maaster/.julia/v0.5/DataFrames/src/abstractdataframe/reshape.jl:188
  unstack(::DataFrames.AbstractDataFrame) at /home/maaster/.julia/v0.5/DataFrames/src/abstractdataframe/reshape.jl:225
  ...



In [16]:

    
d = DataFrame(A=Float64[],B=Float64[])









    Out[16]:




A B



In [17]:

    
transpose = reshape(img, (1, 1234321))









    Out[17]:





1×1234321 Array{N0f8,2}:
 1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8  …  1.0N0f8  1.0N0f8  1.0N0f8  1.0N0f8



In [18]:

    
dump(transpose)
println(sizeof(transpose))









    



Array{FixedPointNumbers.Normed{UInt8,8}}((1,1234321)) FixedPointNumbers.Normed{UInt8,8}[1.0N0f8 1.0N0f8 … 1.0N0f8 1.0N0f8]
1234321



In [19]:

    
# df2 = convert(DataFrame, transpose)
# head(df2)



In [ ]: