Taming the Wild Selection
Part 2

October 17, 2000

Practice the technique of making and modifying selections in PSP6
using the rectangular and freehand selection tools in part 1.
In part 2, practice adding to and subtracting from an existing selection.

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Part 2: Adding to or Subtracting from an existing selection.

Here is where it gets good, guys and gals. Make those selections really work for you!

Let's suppose that after using the Lasso tool, in the point to point mode, that there is an area inside the selection that should be removed, or subtracted from the selection. How can we do this?

Open Hibiscus.jpg in PSP.

Either click the image on the left to open the 800 X 600 version of this image, or use the link above. Right click on that image and Save Image to your harddrive. Please don't try to use the small image on the left to do this tutorial.

Using the Lasso Tool, set to Point to Point, No Feather, Antialias CHECKED, on the Tool Options Palette, select the outside of the hibiscus flower as shown below:

Hmmm, let's drop out, subtract, the areas between the petals keeping only the Hibiscus flower in the selection.

With the Point to Point tool, same settings, press and hold the Ctrl key on the keyboard.

On the screen a minus sign appears next to the lasso cursor indicating the subtract mode.

Select the areas between the petals, one area at a time.

Each time you return to the start point double click or right click to set the selection and watch it drop out.

Then proceed to the next section.

Be sure to press and hold CTRL while selecting the area. Do this as many times as necessary to remove the offending areas between the petals. See Below

OOPS, I accidentally subtracted the light green flower bract on the right side. Let's put this back in the selection.

Adding to the selection:

With the Point to Point Tool, press and hold the SHIFT key on the Keyboard and select the light green part.

Be accurate along the right edge, where the edge of the final selection will be.

Be sure to include some of the old selection on the left, so no holes show up.

Double click to add the surrounded area to the selection. The completed Selection should look like the one below.

After finishing the selection feel free to use the Selection Modify tools as discussed in Part one.

Remember, the more you practice making selections, the the more accurate and faster you will become! Adding and subtracting are especially handy for cleaning up the edges when zoomed in close.

After than spending 10 minutes carefully selecting, you make a mistake near the end.

Rather than totally starting over, go on, finish the original selection, then use the add and subtract modes to clean up your work. This will save time and heartache!

If a mistake somehow occurs in subtracting or adding, go on, and after setting the selection, use the undo tool to remove the last part!

Other things you can do to tame the Wild Selection....

After making the original selection with the Lasso tool, feel free to use any of the other selection tools and their tool options to perform the add and subtract part.

For example...

In the hibiscus photo, let's cut out a circle in the middle.

Pick the Rectangular Selection tool from the Tool Palette, set the Tool Options to Circle as Selection Type and Feather to 5.

While pressing and holding the CRTL key for the subtract mode, drag a circular selection starting in the flowers center. Releasing the mouse button subtracts this area from current selection. See below.

You can also use the Magic Wand tool to add and subtract from this selection in the same manner.

We will NOT go there today, but the key to the Magic wand is controlling its tolerance to remove or add only the colored pixels you want.

Let's finish this up by copying the selection to the clipboard and pasting it onto a new file with a black background to see how it looks. Right click on the Title bar. Select Copy from the flyout box.

Create a new file by pressing the new file icon on the Tool Bar, the white paper file.

Set the size to the same size as the hibiscus image. (800 X 600 supplied) Black background, 72 DPI. Press OK.

Right click on the title bar of this new image and select paste as new layer. Move the layer into position in the upper right corner. Looks pretty good to me. :)

That's it for Taming the Wild Selection!

~~~~~~~~~~End of Part 2~~~~~~~~~~

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Copyright 2004 3D Workshop, Inc. or Jinny Davis

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