IM 6.6.5 in Win32 XP SP3-convert from png to jp2, alpha lost
Posted: 2010-12-01T06:31:49-07:00
I am trying to convert png image via
conversion from this
resulted in image trimed of alpha channel (in place of 0% alpha there were random garbages)
when I changed my command line to
there were still no changes, but when I changed to
the alpha was extracted properly (resulting in grayscale image)
Image Magick 6.6.5 Q16, prebuilt portable version, under Windows XP Service Pack 3 (x86)
Please excuse my poor english
Code: Select all
>convert.exe "example.png" -define jp2:rate=0.1 "example.jp2"resulted in image trimed of alpha channel (in place of 0% alpha there were random garbages)
when I changed my command line to
Code: Select all
>convert.exe "example.png" -alpha On -define jp2:rate=0.1 "example.jp2"Code: Select all
>convert.exe "example.png" -alpha Extract -define jp2:rate=0.1 "example.jp2"Image Magick 6.6.5 Q16, prebuilt portable version, under Windows XP Service Pack 3 (x86)
Please excuse my poor english