Wednesday, March 18, 2015

The Quick selection Tool

Here are the simple steps for employing the Quick Selection Tool to select an object in a photograph:

1. Open in Photoshop the photograph from which you want to make your selection.

2. Zoom in on the object you would like to select. Photoshop has several options for zooming in, one of which is to do a “Control +” on a PC or a “Command +” on a Mac.



3. The submenu under the fourth icon in the Toolbox on the left side of the screen in Photoshop contains the Quick Selection Tool. If you click once on that icon and move the cursor away from the Toolbox, you’ll get whatever tool is already activated in that submenu. If you left click and hold, however, the entire submenu will appear. It contains the Quick Selection Tool and the Magic Wand Tool. (Right clicking gives you this submenu as well.)


4. Left click on the Quick Selection Tool to activate it, move the cursor across the screen, and you’ll notice that it changes to a circle with a plus sign in the center. You can increase and decrease the size by using the bracket keys on your keyboard.

5. With the Quick Selection Tool activated, left click on the area you want to select and drag to allow Photoshop to sample the color range you want to include. In order to reach areas that are small and narrow, zoom in (Control + on a PC or Command + on a Mac), decrease the size of the tool with the left-bracket key, and continue making your selection.
 

6. If you make a mistake, pressing “Control Z” (Ctrl Z) will take you back to the last time you left clicked. (If you want to go back any further than that, go to “Edit” and select “Step Backward.”) If you want to start over, press “Control D” (Ctrl D) to delete the selection entirely.
 

7. When your selection is made, release the mouse button, and look for areas where the moving dashes (marching ants) do not conform to your intended area of selection. If the selection is incomplete, you may want to zoom in (Control + or Command +) and adjust the size of the tool with the bracket keys before completing the selection with the Quick Selection Tool.


8. If the Quick Selection Tool grabs something outside of the area intended for selection, several ways exist to remove the unwanted portion. One is to use the Subtract-From-Selection button in the Options Bar at the top left of the screen that is available when the Quick Selection Tool is activated. (A second method is to hold down the Alt key on a PC or the Option key on a Mac while employing the Quick Selection Tool to eliminate unwanted areas of the selection.)

9. Zoom out with a “Control -” on a PC or a “Command -” on a Mac.

10. Activate the Move Tool by clicking on the first icon in the Toolbox at the left side of the screen in Photoshop. Hover the Move Tool over the selection, left click, and drag the selected object to another position. You’ll see that you can move the selection around freely on that layer.


11. An excellent way of isolating your work for future use is to create a new layer with only the selection on it. Several ways exist for doing this, but one simple method is to go to the Edit Menu to Copy and Paste the selection. When you paste it, Photoshop will create a new layer in the Layers Panel called “Layer 1.” Click twice on “Layer 1,” and rename the layer. In this case, I’ll label it “Wildflower.” (Another method for creating a new layer is to do a “Control J” on a PC or a “Command J” on a Mac.)



12. In the Layers Panel, select the new layer called “Wildflower,” and with the Move Tool activated, you’ll be able to move the selection around on the layer. If you turn off the Background layer, you’ll see the selected flower alone on a transparent background.


It’s that simple! You’ve used the Quick Selection Tool to select an object in Photoshop CS5, and you’ve isolated the selected object

Example:


Tuesday, March 17, 2015

The Polygonal Lasso Tool


                                         

     Polygonal Lasso Tool


  1. In the Toolbox, select the Polygonal LassoTool.
  2. Click on your image to set the first anchor point; then create a contour by adding anchors (clicking) in the key points.
  3. When you come near the first anchor points it looks like this . Click to close the contour.
  4. You can also double-click to close the contour at anytime and any point.
  5. While the New selection option is chosen on the Options bar, you delete the existing selection by making a new selection. 
  6. To add an area to the existing selection you have either to choose the Add to selection mode on the Options bar or to hold down [Shift] key while selecting. 
  7. To subtract an area from existing selection you have either to choose the Subtract from selection option on the Options bar or to hold down [Alt] key while selecting.
  1. To intersect a new selection with the existing selection, either choose the Intersect with selection mode on the Options bar or by holding [Shift+Alt] keys while selecting.
  2. While the New selection option is chosen and the cursor is within the selected area the tool looks like this and can move the selection (ie. borders of the selected area and not the image content).
  3. You can also move selection by using the keyboard cursor keys.