image.load could not handle 2 channels (grayscale + alpha) image when specify depth=3

[rickerliang]

IMO, this can handle the same as depth=1, the code may be like this:

elseif chan == 2 then
   local imgrgb = img.new(3, img:size(2), img:size(3))
   local narrow = img:narrow(1,1,1)
   imgrgb:select(1, 1):copy(narrow)
   imgrgb:select(1, 2):copy(narrow)
   imgrgb:select(1, 3):copy(narrow)
   img = imgrgb

Is that correct? Thanks.

[soumith]

are you planning to ignore alpha in this case?

[rickerliang]

um..I think if people specify depth = 3, it means ignoring the alpha channel ;)