Autotek autocad raster design 2010 Manual De Usuario

6 To delete a point on a Piecewise Linear or Fitted curve, select the point,

and press Delete, or right-click and click Delete Point.

7 To import a curve, click the Import button, or right-click in the contrast

curve window and click Import. In the 

 (page 336) dialog box,

simply navigate to the Gamma Point List (*.gpl) file and click Open.

8 To export a curve, click the Export button, or right-click in the contrast

curve window and click Export. In the 

 (page 311) dialog box,

navigate to the folder where you want to save the Gamma Point List
(*.gpl) file and click Save.

9 To adjust the scale in the histogram window, move the slider up and

down. Moving the slider up increases the scale such that low frequency
values are more visible and the highest frequency values are truncated
by the top of the window.

10 To restore the default settings for the curve, click the Reset button, or

right-click in the contrast curve window and click Reset.

11 Click Apply.

12 If you specified a sub-region in step 2, select an option from the Apply

Changes To section:

■

Sub-Region applies the changes to the sub-region only.

■

Entire Image applies the changes to the selected image.

13 If the sub-region is associated with an 8-bit color image, select a palette

option from the Sub-Region Options list:

■

Retain Current Palette applies your changes to the sub-region by
mapping to the closest colors from the current palette. This option
maintains the current palette and will not affect pixels outside the
selected region.

■

Rebuild Palette With All Colors creates a new palette to best
accommodate all colors in the entire image. Because this image
changes the palette, pixels inside and outside the sub-region may be
affected by this option.

■

Rebuild Palette With New Colors also creates a new palette, but this
option guarantees that colors in the sub-region are included in the
palette by giving preference to the pixels inside the sub-region over
pixels outside the sub-region. Because this image changes the palette,
pixels outside the sub-region may be affected by this option.

104 | Chapter 6   Modifying Images