Operation Manual

59
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The Tool Chest — The LCH Editor
The Hue Editor
The controls for editing hue are unique, consisting of a rain-
bow-colored background bisected by a horizontal line which
represents the hues (colors) in the original image (input col-
ors). Superimposed on this line is another horizontal line
representing the colors in the image after editing (output
colors). Before editing, the input line is the same as the
output line, so that reds in the input are reproduced as reds
in the fi nal image. By changing the shape of hue curve, the
user can map input colors to different output colors over a
selected portion of the color range.
To edit the hue curve, click once in the edit window to ac-
tivate the hue editor, then click the point on the curve over
the hue you want to edit. Drag this point up or down until it
intersects with the desired output color.
Item Description
Width slider
Adjust the width of the curve that passes through the
selected point, increasing or decreasing the range of
adjacent hues affected by the change.
Scale button
Click to change the vertical scale from 60 ° through
120 ° to 180 ° and back again (the degrees in this scale
refer to a 360 ° color wheel). Increasing the scale in-
creases the range of hues visible in the display, while
decreasing the scale increases precision.
Output slider Map all input colors to different output colors.
Restore the hue curve to linear.
Restore all curves in the LCH Editor to linear.
Output slider
Scale button
Width slider
To determine the hue of a specifi c pixel, move the cursor
over the image. The point corresponding to the hue of the
pixel under the cursor will be highlighted on the input line.