Page 56 - CC2019_PS_Look_Inside

12. Repeat this process to add the grass (near the woman’s arm) to the selection.
It might be helpful in this area to reduce the onion skin transparency, so that you can
better see the details in this portion of the image.
Original
Selection

Reducing the transparency
allows you to better see
the unselected details.

Refined
Selection

13. If necessary, expand the Edge Detection and Global Refinements sections
of the Properties panel, then review those options.
• Radius is the number of pixels around the edge that are affected. Higher
radius values result in softer edges and lower values result in sharper edges.
• Smart Radius automatically adjusts the radius for hard and soft edges
found in the border region. You should turn off this option if your
selection area has all hard edges or all soft edges, or if you prefer to
manually control the Radius.
• Smooth reduces the number of points that make up your selection and, as
the name suggests, makes a smoother edge. You can set smoothness from
0 (very detailed selection) to 100 (very smooth selection).
• Feather softens the selection edge, resulting in a transition that does not
have a hard edge (in other words, blends into the background). You can
feather the selection up to 250 pixels.
• Contrast is the degree of variation allowed in the selection edge. Higher
Contrast values (up to 100%) mean sharper selection edges.
• Shift Edge shrinks or grows the selection edge by the defined percentage (from
–100% to 100%).
• Invert reverses the mask; selected areas become unselected and vice versa.

68 Project 1: Music CD Artwork