problems with GDI+ and tiff images

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

Asfar - 29 Mar 2006 16:17 GMT

I am using GDI+ to load a tiff image and write a string to it and save the
tiff image to another file.

I can save the image with only LZW Compression and not abel to save with
CCITT4 compression. If I use CCITT4 compression I get an invalid paramter
error when saving file.

The file saved with LZW compression has different resolution and tags then
the orignal image. Is there a way to save the image with the same tags as
the orignal image.

Thanks,
-Asfar

Reply to this Message

Tamas Demjen - 29 Mar 2006 18:57 GMT

> I can save the image with only LZW Compression and not abel to save with
> CCITT4 compression. If I use CCITT4 compression I get an invalid paramter
> error when saving file.

Are you sure your images are 1-bit B&W? CCITT Group 4 is for images
where each pixel is represented by 1 bit only.

Tom

Reply to this Message

Asfar - 29 Mar 2006 19:02 GMT

My orignal image is 1bit B&W. When I create a bitmap object its not 1bit
B&W. So I guess i need to make sure that the new image is 1bit B&W.

-Asfar

>> I can save the image with only LZW Compression and not abel to save with
>> CCITT4 compression. If I use CCITT4 compression I get an invalid paramter
[quoted text clipped - 4 lines]
>
> Tom

Reply to this Message

Rate this thread:

problems with GDI+ and tiff images

Free Magazines