Autodesk 00126-050008-1640A User Guide - Page 80

WiseImage - User's Guide - or - press the button , pick a point in the image; the selected color will be selected in the color Samples table; - or - press the button , draw a polygon around the desired area in the image. The colors within the polygon will be selected in the color Samples table. Observe selected colors in the image using the View Selection tool. Select the checkbox ; a color located next to the checkbox is used as a highlight color. Pressing on this color invokes the dialog for highlight color selection. To delete a color from a palette Select color(s) to delete. Press the button . Reduce the number of colors by setting the number in the color counter and pressing the button. To add or replace a color in the palette To replace a color, click on the color sample to replace, or to add a color select an unoccupied space in the color table. Press the RGB button in the color Correction dialog and choose a new color to add or replace an existing color with. To merge colors Select colors to merge from the color Samples table with the SHIFT key pressed or pick them in the image using the tool . Press the button . Blur This filter produces an image blur effect, giving the impression that an image is slightly "out of focus". Blur filtration reduces image clearness, but makes image areas with texture fills more even. This procedure can have a positive effect on further binarization or image color separation. To calculate pixel colors the program replaces its color value by the averaged value of the area. Area pixels color characteristics are considered with a weight function; a two-dimensional Gaussian distribution with the center located in the current pixel is used for this purpose. Radius is the only filter parameter. The increase of this value produces a stronger blur effect. 82