5.4 Verifying Watermark
Note this function is not available in GV-LPC 2211 / 2011. The watermark is an encrypted and
digital signature embedded in the video stream during the compression stage, protecting the
video from the moment of creation. Watermarking ensures that an image is not edited or
damaged after it is recorded. To enable the watermark function, see
Watermark Setting
,
4.1.1
Video Settings
.
The Watermark Proof is a watermark-checking program. It can verify the authenticity of the
recording before you present it in court.
5.4.1 Accessing AVI Files
To verify watermark, access the recorded AVI files by one of the following methods:
1. Use the
File Save
function (No. 6, Figure 3-2) to start recording on the local computer.
2. Locate recorded files on the GV-System.
5.4.2 Running Watermark Proof
1. Install
Watermark Proof
from the GV-IP LPR Camera Software CD. After installation, a
WMProof
icon is created on your desktop.
2. Double-click the created icon. The Water Mark Proof window appears.
3. Click
File
from the menu bar, select
Open
and locate the recording (.avi). The selected
recording is then listed on the window. Alternatively, you can drag the recording directly
from the storage folder to the window.
4. If the recording is unmodified, a check mark will appear in the
Pass
column. On the
contrary, if the recording is modified or does not contain watermark during recording, a
check mark would appear in the
Failed
column. To review the recording, double-click the
listed file on the window.
158
