With the Zoom Window feature in Nx Witness , when you select a rectangular region in an Item's display, Nx Witness instantly opens that selected region as a new item in the current layout. This lets you simultaneously view an entire device image and a zoomed-in detail. You can create as many zoom windows as you like from a given item, and these zoom window items will be saved in the layout. Zoom windows can be very helpful for viewing fish-eye camera output (see "Dewarping Fish-Eye Cameras").
The zoom window region on the source camera is persistent and editable. It can be resized in the source item by dragging a corner and it will dynamically adjust in the related zoom window, and it can be moved between cameras in a layout. When you close the item created by the zoom window, the zoom window region in the source item will be deleted.
To configure a zoom window:
1.Select a camera item.
2.Click on the Create Zoom Window icon , then drag a rectangle on the desired area. A new item will open in the current layout.
3.To close a zoom window, close the item it created.