Stereo Equalizer User Manual

Distort Filters
The distort filters transform the appearance of images without adding the appearance of depth.
Blocks: The Blocks filter breaks an image down into scrambled block pieces. Users can set the size of the
blocks, the distance between the pieces, and the background color.
Ripple: The Ripple filter distorts an image with one or more waves. Users can control the strength of the
primary wave to set the warping of the image, or add an additional perpendicular wave to increase t he
distortion.
Tile: The Tile filter reduces image dimensions and reproduces images as a series of tiles on a grid. The
Horizontal and Vertical values can be set by the user, and represent the number of images duplicate d on each
axis. Users can use the Tile effect in combination with flood fills to create backgrounds or to pre view a
wallpaper effect for Web pages.
Whirlpool: The Whirlpool filter applies a fluid, swirling pattern across images. User can choose between any of
the preset whirlpool styles in CorelDRAW 9, or they can create custom styles by setting the smear l ength,
spacing, twist, and streak detail of the Whirlpool effect. The custom whirlpool styles can be saved for later
use.
Wind: The Wind filter blurs an image in a specific direction, creating the effect of wind blowing across an
image. Users can control the strength and direction of the Wind effect. They can also adjust the tr ansparency
of the effect by moving the Opacity slider. Higher opacity values produce visible distortion and bl urring,
while lower opacity values produce a more subtle effect.
Noise Filters
In bitmap editing, the term “noise” refers to random pixels on the surface of a bitmap image, resem bling
static on a television screen. Noise filters are used to add or remove unwanted information from an image.
Diffuse: The Diffuse filter spreads out the pixels of an image to fill in blank spaces and remove noise. Th e
effect can appear smooth or blurry, or produce a soft, double-edged look, depending on the level of diffusion
selected by the user.
Dust And Scratch: The Dust And Scratch filter is useful for eliminating dust and scratch faults in an image. It
reduces image noise by averaging pixel values, causing adjacent pixels to bleed into each other.
Maximum: The Maximum filter removes noise by adjusting pixel values based on the maximum pixel value of
neighboring pixels. The filter also causes a mild blurring effect if it is applied in large percent ages or more
than once.
Median: The Median filter is similar to the Dust And Scratch filter, since it removes noise and detail by
averaging the colors of adjacent pixels in image. The median filter blurs an image to a greater ext ent than the
Dust And Scratch filter.
Minimum: The Minimum filter darkens an image by adjusting pixel values based on the minimum pixel values
of neighboring pixels. The Radius slider determines the number of neighboring pixels that are selec ted and
22 February 1999
CorelDRAW™ 9
REVIEWER’S GUIDE