Autodesk 00126-050008-1620A - Autocad 2006 Essentials User Manual page 77

Version x for autocad 2000/2000i/2002/2004/2005/2006 and autocad lt 2002/2004/2005/2006

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To change color profile

Choose Gamma Correction from the rImage menu or click the

WiseImage toolbar.

The Gamma Correction dialog is displayed. Do the following:

Specify white and black points using the relevant eyedropper tools;

Choose Master or specify a color in the Channel list;

Create Gamma curve automatically or adjust it manually;

See the results in the preview window. Press Apply.

Specifying black and white points

Use the

image. Select an appropriate tool and draw an area on the screen.

The color point section of the Gamma Correction dialog allows for precise

adjustment of color values. If any values are set different from (0,0,0) for a black

point and/or (255,255,255) for a white point, then the points located outside this

range will not be affected by the Gamma correction procedure.

The Auto Set button

for every color channel. The histogram in the middle of the dialog window reflects

color brightness distribution. The curve for every channel can be changed

separately.

Click

to reset the gamma curve.

buttons to pick the black or white point values directly from the

calculates the black and white point values automatically

6 Color Correction and Color Filtration

button on the

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