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. 2020 Apr 16;20(8):2264. doi: 10.3390/s20082264

Figure 6.

Figure 6

Zoom-based adjustment illustration on PTZ mesh. Without adjustment, the target object (tablet) is getting bigger when the zoom level increased. With adjustment, we shrink the PTZ vertices to preserve the target object size and position during zoom-in (as shown in this image) or enlarging the PTZ vertices during zoom-out.