Page 51 - 3DF Zephyr

The Rectangle, Polygon and lasso tools are very similar and most users should be already familiar with them: to mask a certain area (the area you want to process) you can: - drag a rectangle and click the "mask" button to mask the selected area - use the left click button to add nodes to the polygon path (double-click to automatically close the polygon) and click the "mask" button to mask the selected area - drag the lasso and click the "mask" button to mask the selected area. When the selection has been made, you should see a blue overlay, while when the mask is being applied, you should see a red overlay. You may also remove a mask subsection using the "remove mask" button. Using these tools you can add and subtract different ares by keeping the left control/left shift keyboard button pressed when doing an action. You may also undo actions using the CTRL+Z shortcut or by using the command history. You may also change the zoom value by using the scroll up/down mousehweel; you may also translate the current view by moving the mouse while the mousewheel is kept pressed down. The silhouette tools can be also used to automatically compute the silhouette of the subject by tracing the foreground element (red, which will be masked) and the background element (blue, which won't be masked). You may also quickly swap the foreground/background by usinng left shift + left click. You can also delete strokes by dragging the cursor over it and right clicking while dragging. This tools is very useful especially when the background has a very high contrast with