HDR Soft Pro - 4.1 - Macintosh Instrukcja Użytkownika Pobierz pdf (Strona 22)

Photomatix Pro User Guide 20

3.7.2 Fitting the Selection to the Area’s Edges

The area to be replaced usually has at least one irregular border (such as the mountains in the sample

photograph). It’s dicult to draw irregular borders exactly, and you don’t have to. You can draw rough

borders, and Photomatix will t them for you.

Finding the edges

The borders of the area you want to replace are almost always at

edges — large changes in brightness between adjacent pixels. In the

sample photo, the transition between the light sky and the darker

mountains is an edge.

Selecting the Attach to Edges checkbox causes Photomatix to search

for an edge tting the selection path you drew. The selection path is

then redrawn along the edge — in this case, the mountains.

Adjusted selection after clicking on "Attach to Edges"

The Contrast setting (Low, Medium, High) determines whether a change in brightness is large enough to be

an edge. The higher the setting, the greater the brightness change has to be.

The Width box (next to the Attach to Edges box) sets the maximum distance Photomatix searches (in pixels)

from the original selection path. If Photomatix nds an edge within the Width setting, the selection is

redrawn to t the edge. If Photomatix nds a border of the image, the selection is redrawn along the border.

Changing the Width or Contrast setting immediately redraws the selection path to reect the new value.

To undo the edge t, clear the Attach to Edges checkbox.

Attach to Edges checkbox

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