Operation Manual

538 | Corel DESIGNER X7 User Guide
To change the color mode of a bitmap
1 Click a bitmap.
2
Click Bitmaps Mode, and click a color mode.
The current mode of the selected bitmap is not available in the menu.
Changing bitmaps to black-and-white images
You can change any image to a black-and-white image. In addition to conversion settings such as threshold, screen type, and intensity, there
are seven conversion options that affect how the converted images will look.

Conversion 
Line art Produces a high-contrast, black-and-white image. Colors with
a grayscale value lower than the threshold value that you set
change to black, while colors with a grayscale value higher than the
threshold value change to white.
Ordered Organizes the gray levels into repeating geometric patterns of black
and white pixels. Solid colors are emphasized and image edges are
hard. This option is best suited for uniform colors.
Halftone Creates different shades of gray by varying the pattern of black and
white pixels in an image. You can choose the screen type, angle for
the halftone, lines per unit, and the unit of measure.
Cardinality-Distribution Creates a textured look by applying a calculation and distributing
the result to the screen.
Jarvis Applies the Jarvis algorithm to the screen. This form of error
diffusion is suitable for photographic images.
Stucki Applies the Stucki algorithm to the screen. This form of error
diffusion is suitable for photographic images.
Floyd-Steinberg Applies the Floyd-Steinberg algorithm to the screen. This form of
error diffusion is suitable for photographic images.
To change a bitmap to a black-and-white image
1 Click a bitmap.
2
Click Bitmaps Mode Black-and-white (1-bit).
3 Choose an option from the Conversion method list box.
4 Move the Intensity slider.
If you want to view different parts of the image, you can drag the image in the Preview window.