Archived Data Techniques Forums

Hi,

 I am trying to use ImageMan.NET to create a CCITT G4 LSB type TIFF image, however, the settings that I have tried result in a different type of image. It is imperative that the files be in that specific format.

 When I tried these options:

imTifEncoder.Compression = DTI.ImageMan.Codecs.TifCompression.TifGroup4;

imTifEncoder.FillOrder = DTI.ImageMan.Codecs.TifFillOrder.LeastSignificantBitFirst;

...

 I got an image file that was actually in TIFF LSB - LSW format. It shows up as a blank image in a client application.

Any help is appreciated.

A few other bits of data:

 imImage is of the type DTI.ImageMan.ImageCollection.

 I also use a DTI.ImageMan.Commands.ModifyBitDepthCommand to change the images to be bilevel.

The images seem to display correctly in MS Paint and other TIF viewers, however, the file is in type TIF LSB - LSW compression, instead of CCITT Group 4, and thus when opened by our client application, it displays as a blank image.

When using imTifEncoder.Compression = DTI.ImageMan.Codecs.TifCompression.TifModCcitt, it outputs a CCITT Group 3 image, which again is blank when opened.

When using TifCompression.Tiflzw, it shows up as type LZW, but still does not display.

Hi,

I believe we have responded to your email on this issue, if not pls let us kow.