- use mutable d_bg = new Image<Gray, float32>(img.Size)
- let mutable d_fg = new Image<Gray, float32>(img.Size)
- let mutable fg = new Image<Gray, byte>(img.Size)
+ use mutable d_bg = new Image<Gray, float32> (img.Size)
+ let mutable d_fg = new Image<Gray, float32> (img.Size)
+ let mutable fg = new Image<Gray, byte> (img.Size)