UnsupportedPixelFormat GDPicture Status with Jpeg 2000

[asmythee]

This code kics off a GDPictureStatus of 62, Unsupported Pixel Format.

We'd really like to use Jpeg 2000. Is there a workaround for creating a byte array?



Thanks,
Mitch

Code: Select all

result = oGdPictureImaging.SaveAsByteArray(ImageID, ba, bytesread, GdPicture.DocumentFormat.DocumentFormatJP2, 95)

[Loïc]

Hi,

Just convert the image to 24 bpp before saving is as jpeg2000. See: ConverTo24Bpp() method.

Kind regards,

Loïc

[asmythee]

Thanks Loïc, this worked. I'm now doing:

Code: Select all

oGdPictureImaging.ConvertTo24BppRGB(ImageID)
result = oGdPictureImaging.SaveAsByteArray(ImageID, ba, bytesread, GdPicture.DocumentFormat.DocumentFormatJP2, 5)

Although it's currently running much slower than JPEG. Is this expected, or are there some other settings I might try?

(We're looking closely at Jpeg 2k as there seem to be fewer artifacts when scanning text but it still seems to provide a good compression size.)

Thanks,
Mitch