3vr P-Series SmartRecorder, Руководство по установке

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Megapixel Cameras -- Field of View
With the addition of megapixel cameras to your security solution, you can now utilize the higher resolutions
available to ultimately provide a wider field of view. In essence, this allows the use of less cameras and more
coverage while still capturing face profiles. It is extremely important to understand that the same principles still
apply for facial recognition; this includes pixels in between the eyes, horizontal and vertical angles, and lighting.
The number of horizontal pixels is still the key factor in terms of performing 3VR facial surveillance; the advan -
tage can be noted in the table below.
1024 x 768 0.7 6.5
1280 x 1024 1.3 8.0
1600 x 1200 2 10.5
2048 x 1536 3 13.5
The appearance of the field of view is obviously different with an eight and a half feet width.
Pixels Between the Eyes
The same principles that apply to lower resolution cameras apply to megapixel cameras; 3VR still requires 35
pixels between the eyes. However, analysis is conducted on the full megapixel frame of the camera’s output. For
example, with a resolution of 1280 x 1024, 3VR conducts facial analysis at 1280 x 1024 versus an analog camera
at 4CIF (704 x 576).
Resolution Megapixels Width For Face (ft)