LevelOne NVR-1204 Guía de instalación descargar pdf (Pagina 111)

Network Video Recorder Administrator’s Manual

111

Configure Fisheye Cameras

With hemispherical lenses, fisheye cameras generate images at up to 360-degree width,

which can cover all four corners of a room or both sides of a long aisle. As the original image

captured by wide-angle lens is much distorted, to suit most monitoring purposes, the

Dewarping process is required to alter the uneven lines and shapes before the images are

displayed. Nowadays, the fisheye cameras come in two types in terms of the

image-correction capability:

 Fisheye Cameras with in-camera dewarping function

The dewarping takes places in camera before the video is output to NVR server. Since the

image correction counts on the camera itself, NVR server will not bear much extra loading,

which benefits the system requiring many of these fisheye cameras .

 Fisheye Cameras without dewarping function

These fisheye cameras output only original global images, relying on software algorithm

processing provided by NVR sever to correct the images. They are suitable for a system

with limited bandwidth, for NVR server processes and responds to User’s ePTZ

manipulation or demands for changing view modes immediately, without waiting for camera

side to deliver a new frame.

NVR’s software algorithm can perfectly corrects the original fisheye images, generating 6

specific fisheye view modes from User’s usual perspective. As a remote client, you may

 Select a desired fisheye view mode on Live screen and manipulate virtualized ePTZ

operation with onscreen controls.

 Export the video clip of your desired fisheye view mode.

To make use of NVR’s dewarping features for your fisheye cameras, please

1. Adjust Video Quality Settings

After the fisheye camera is successfully added, go to Setup page Cameras tab, select the

device and then click “Get Camera Settings”, make sure you set the Stream Mode as

“FISHEYE” for a hemispheric camera .This is to make sure this hemispheric camera is

outputting fisheye original video stream as a mini fisheye dome camera does.

2. Adjust Fisheye Display Settings

Select your Mounting Type, and then Default Fisheye Mode. For a fisheye mode containing

panorama view, you may want to configure the Default Rotate X (width of view) and Default

Rotate Y (height of view) configurations.

1 2 ... 106 107 108 109 110 111 112 113 114 115 116 ... 135 136

Sin comentarios

LevelOne NVR-1204 Guía de instalación Pagina 111