transparent color support #82
Description
Currently, ImageBinarization doesn't support transparent colors (e.g., RGBA) so I open this issue to see your opinions:
- leave it unsupported
- drop the transparent channel
- keep the transparent channel and output the transparent gray color, e.g.,
GrayA{T}(Unfortunately, T can't be Bool here).
I'm not sure if we should support this. Neither dropping or making output GrayA{Float64} type doesn't sound very good to me.
cc: @ashwani-rathee