GVD M3 series, User Manual

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Chapter 4
System Operation
4-48 HD NVR User Manual
4-5-9 Play a ROI
A ROI is the abbreviation of “ region of interest ” , and the ROI is often used in the
image which comes from the mega pixel camera. When the image is playing, the ROI
can be played in other viewer separately. The high image resolution of the mega pixel
camera makes the ROI image more distinctly even though the image has been
partially enlarged. When the ROI is created, a yellow rectangle frame appears on the
image area, representing the visible area of the ROI.
When the ROI image is played on an independent viewer, the movement of the yellow
rectangle in the original viewer will generate the change of the ROI image
simultaneously. The ROI function allows the viewer to simulate the PTZ function in a
non-mechanic camera.