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decoding composition layers

2012-01-17
2012-10-06
  • grimfromghent
    grimfromghent
    2012-01-17

    Hi there,

    I also the same question to David Thaubmann, but he seems to be busy at the
    moment:
    jpeg2000 part-2 (jpx) has the capability to create so called "composition
    layers", in which
    the underlying layers are combined to form a presentation.

    I tried this command:

    kdu_merge -i source.jp2,watermark.jp2 -jpx_layers 1:0
    sRGB,alpha,2:0/0,2:0/1,2:0/2,2:0/3 -composit
    "0:(0,0,0.5,0.5)@(0,0,1),1:(0,0,0.5,0.5)@(0,0,1)" -o /tmp/test.jpx

    explained: the watermark is placed in upper left corner of the image canvas.
    Both are cropped from the left corner to half of its width and height.

    but, neither IIPImage-server or 'eye of gnome' seem to be reading this special
    layer.
    Is their maybe an option to make this "composition" permanent: no composition
    layer
    but really combining both data so that the watermark really replaces the
    source-file?
    (apart from using ImageMagick, what is really slow)

    thanks in advance

     


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