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Imager
Posted on 2010-06-22 03:38:59.238671-07 by dfr
convert(matrix => matrix from flash)
Is it possible somehow adopt transform matrices produced in flash colormatrix module (http://www.adobe.com/devnet/flash/articles/matrix_transformations_04.html) to use it with Imager and its "convert" method ?
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Posted on 2010-06-22 03:56:46.35652-07 by tonyc in response to 12789
Re: convert(matrix => matrix from flash)

It's very similar in concept.


There's two main differences:


1. Imager images aren't always 4 channels (RGBA), but can be 1 (grey), 2 (grey+alpha), 3 (RGB) or 4 channels (RGBA), and the matrix needs to be adjusted for that.


2. The convert() matrixes use a 0.0 to 1.0 sample model instead of a 0 to 255 sample model.


It should be possible to convert any matrix used for flash colormatrix to a matrix for Imager's convert().

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Posted on 2010-06-22 14:29:34.566887-07 by dfr in response to 12790
Re: convert(matrix => matrix from flash)
Look like there is a showstopper, flash matrix has 5th column - "offset", which seem hardly projected into Imager world.
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Posted on 2010-06-22 15:45:00.382045-07 by tonyc in response to 12791
Re: convert(matrix => matrix from flash)

Imager has the offset column, though the specification of the matrix in the documentation isn't clear about it.


Some of the examples use it though.

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