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How to change output format #16

Joott opened this issue Nov 27, 2018 · 0 comments


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commented Nov 27, 2018

I'm currently trying to encode a .ppm file lossless and getting the same file (.ppm) back when decoding. Somehow i always end up with a .png file in the end and have no idea how to change that.

I'm currently doing the encoding and decoding in F#.
This is an example of how the code looks like. I also tried changing the parameters, but the output fileformat didn't change. The picture i got in the last step was always a PNG, while the input was a PPM. I tried different PPM pictures (including the samples from the testfile).

let image = File.OpenRead @"filepath"
let enc = J2kImage.ToBytes(J2kImage.CreateEncodableSource(image2))
File.WriteAllBytes(@"filepath2", enc)

let dec = J2kImage.FromFile(@"filepath2")
let dec2 = dec.As()

Thanks in advance for any help.

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