> I've tried a little more, with some logical operations (and or ...) of > grayscale pictures, sometimes, theres color in the displayed result-image. > Something must be wrong. Any Idea? >
The logic on the image and the display of the image are really unrelated. You can take a color image and display as grayscale at any point or take a grayscale and apply a false color colortable at any time. Anyway, I suspect that your logic operations are working fine. The intensity graph always maps the data to the range of 0-255 and applies a color table. It does this for integers as well as floats. If the color ramp of the color table contains color, that would explain it. If it is totally gray and you are seeing color, it may be a bug in the intensity graph. If this doesn't help, either post again with more information about how the intensity graph is setup, or try turning on interpolation on the intensity graph. Greg McKaskle
