Problems with Transparency?

I'm loading JPG Pictures and display them on the screen.
In some pictures some areas are blue instead of black (I think its in black areas).
Is this a problem wit transparenca or something else? How can I get rid of this effect?

Thanks!

have you tried using PNG instead?

JPG is not a lossless compression format, so it will leave "artifacts" of different colours on your image.

No. Like Lars says it's a problem with using JFIF compressed images, which is a lossy compression format deswigned primarilly for photographic images (as opposed to in-game sprites).

The JPG compression is set to 1 (no compression at all). In PSP and other programs the pictures look normal. Its just that in BlitzMax the black areas (RGB 0,0,0) are shown in blue.

Try using LOADIMAGE("image.jpg",FILTEREDIMAGE)

if you don't specify flags the default includes masking the image with the current mask color, which is black...