Operation Manual

192
Layout and design
Last updated 11/30/2015
Clipping path options
Threshold Specifies the darkest pixel value that will define the resulting clipping path. Increasing this value makes
more pixels transparent by extending the range of lightness values added to the hidden area, starting from 0 (white).
For example, if you want to remove a very light drop shadow when using Detect Edges, try increasing the Threshold
until the shadow disappears. If light pixels that should be visible are invisible, the Threshold is too high.
Tolerance Specifies how similar a pixel’s lightness value can be to the Threshold value before the pixel is hidden by the
clipping path. Increasing the Tolerance value is useful for removing unwanted bumps caused by stray pixels that are
darker than, but close to the lightness value of, the Threshold value. Higher Tolerance values usually create a smoother,
looser clipping path, by increasing the range of values near the Tolerance value within which stray darker pixels are
included. Decreasing the Tolerance value is like tightening the clipping path around smaller variations in value. Lower
Tolerance values create a rougher clipping path by adding anchor points, which may make it harder to print the image.
Inset Frame Shrinks the resulting clipping path relative to the clipping path defined by the Threshold and Tolerance
values. Unlike Threshold and Tolerance, the Inset Frame value does not take lightness values into account; instead, it
uniformly shrinks the shape of the clipping path. Adjusting the Inset Frame value slightly may help hide stray pixels
that could not be eliminated by using the Threshold and Tolerance values. Enter a negative value to make the resulting
clipping path larger than the clipping path defined by the Threshold and Tolerance values.
Invert Switches the visible and hidden areas, by starting the clipping path with the darkest tones.