Adobe Photoshop CS4 - Manual (Page 238)

231 USING PHOTOSHOP CS4
Retouching and transforming
Last updated 1/10/2010
Reconstruct part of a distorted image
1 Freeze areas you want to keep distorted.
2 Select the Reconstruct tool . Choose one of these Reconstruct tool modes from the Tool Options area of the
dialog box.
3 Hold down the mouse button or drag over the area. Pixels move more quickly at the brush center. Shift-click to
reconstruct in a straight line between the current point and the previously clicked point.
Repeat distortions sampled from a starting point
1 After distorting the preview image, choose one of these reconstruction modes from the Mode menu in the Tool
Options area of the dialog
box.
2 Select the Reconstruct tool , and in the preview image, hold down the mouse button or drag from a starting
point.
This creates a copy of the distortion sampled at the starting point, much as the Clone tool does when you use it to paint
a copy of an area. If there is no distortion, the effect is the same as using Revert mode. You can set new starting points
and use the Reconstruct tool repeatedly to create a variety of effects.
Reconstruction modes
You can choose one of the following reconstruction modes:
Revert Scales back distortions uniformly without any kind of smoothing.
Rigid Maintains right angles in the pixel grid (as shown by the mesh) at the edges between frozen and unfrozen areas,
sometimes producing near-discontinuities at the edges. This restores the unfrozen areas so that they approximate their
original appearance. (To restore their original appearance, use Revert reconstruction mode.)
Stiff Acts like a weak magnetic field. At the edges between frozen and unfrozen areas, the unfrozen areas take on the
distortions of the frozen areas. As the distance from frozen areas increases, the distortions lessen.
Smooth Propagates the distortions in frozen areas throughout unfrozen areas, with smoothly continuous distortions.
Loose Produces effects similar to Smooth, with even greater continuity between distortions in frozen and unfrozen
areas.
To adjust the intensity of a reconstruction mode, select it from the unlabeled pop-up menu above the Mode menu. As
you adjust intensity, the image previews your changes.
Additional modes for the Reconstruct tool
The Reconstruct tool has three additional modes that use the distortion at the point where you first clicked the tool (start
point) to reconstruct the area over which you use the tool. Every time you click, you set a new start point; so, if you want
to extend an effect from one start point, don’t release the mouse button until you finish using the Reconstruct tool.
Displace Reconstructs unfrozen areas to match the displacement at the start point for the reconstruction. You can use
Displace to move all or part of the preview image to a different location. If you click and gradually spiral out from the
start point, you displace or move a portion of the image to the area you brush over.
Amplitwist Reconstructs unfrozen areas to match the displacement, rotation, and overall scaling that exist at the start
point.
Affine Reconstructs unfrozen areas to match all distortions that exist at the start point, including displacement,
rotation, horizontal and vertical scaling, and skew.