[Qt-interest] Saving monochrome image

[M. Bashir Al-Noimi]

Alessandro Portale wrote:

> I am afraid that in Qt 4.5, the tiff output will not produce what you 
> are looking for. It will always write an Rgb image.
>
> Qt 4.6 will support monochrome image saving. See the commit:
> http://qt.gitorious.org/qt/qt/commit/2dc47ad36f235ba053a329179be4ed87d0b4d484
>   
Do you think it better to create feature request in Qt issue tracker ?
> If I read the code correctly, it will use CCITT RLE compression for 
> monochrome images.
>
> If you need monocrome tiff saving before Qt 4.6 comes out, you may need 
> to use libtiff directly, or easier: Use FreeImage. Since you can get the 
> image data -see "QImage::bits()"- from your QImage, it is not so hard to 
> make those extra libs interoperate with your Qt app.
>   
After your post, I fixed this issue by using a stupid way -but it works- 
by passing arguments to gimp for converting the resultant tiffs to 
uncompressed monochrome.

Thanks Alessandro


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Best Regards
Muhammad Bashir Al-Noimi
My Blog: http://mbnoimi.net/