Motion detection
The camera has a built-in, hardware supported motion detection function. This function works with the uncompressed pictures, so the accuracy of the function does not depend on the picture compression ratio.
The algorithm has many setup options:
Sensitivity: the minimum change between two pictures to make effect (sound an alarm, change record settings)
Holding: after an alarm, the changes in the picture won't make another alarm during this time. The new change restarts this timer, so continuous movement won't make regular alarm.
Mask: a selected area on the picture. It also has sensitivity level. With high sensitivity selection and low sensitivity background, the changes on the selection have an effect, but the changes in the background don't have an effect.
Privacy mask
The Privacy mask is a selected area of the picture which will always be blank (both on live and recorded video). This area won't affect the color level and light compensation algorithms.
Exposition mask
The Exposition mask is a selected area of the picture which area won't affect the color level and light compensation algorithms.
Day-Night
This function is available only for day-night design LogiPix Cameras. The camera has a built-in, mechanically moved IR filter which is essential in outdoor use (IR compensated lenses also required).
The camera automatically measures the brightness of the pictures, and when it became too dark (and other automatically adjustable parameters are fulfilled) it switches to night mode. In night mode the IR filter will be removed between the lenses and the sensor and the picture turns to black and white. Without the IR filter the sensor gets more light and IR illuminators can work effectively.
LogiZoom
The LogiZoom function is essential for low bandwidth multi-megapixel surveillance systems. It uses the flexibility of JPEG2000, which can provide different resolutions for different parts of the same picture.
The recorded pictures on the LNVR can be always full resolution pictures but the bandwidth of the network is not always enough to transfer the full resolution pictures at the required speed. But a surveillance system doesn't require full resolution pictures from all cameras at the same time.
The Control Center software makes a request for the pictures from the LNVRs only in the necessary resolution. With the LogiZoom function a selected part of the picture can be viewed in full resolution for better visibility while the remaining part of the picture remains in low resolution for the higher refresh speed.
For example: the full resolution picture is 500KByte but the necessary resolution picture just 50KByte. There is something on the picture which needs to be enlarged. This high resolution part of the picture is 50KByte. It means that 25+25KByte data transfer needed on the network instead 500KByte. It can provide a five times higher refresh rate at the same quality as the full time high resolution picture transfer.
Network speed limit
The LNVR and the monitoring software can be used with a limited network. The limits can be set on both sides (at the LNVR or/and at the Control Center) which is useful in complex network systems with different bandwidth limits.
Video Proxy
The Video Proxy server module service can be used by the Control Center. The Control Center does not make a request for the picture directly to the LNVR, but to the Video Proxy server module. This way more Control Centers can receive the same picture without placing an extra load on the LNVR and the network.
The Video Proxy server module has a cache where the displayed pictures can be stored for a short interval in the displayed resolution.
Download Manager
The download manager requests the images of the selected archive periods from the device, or from the buffer of Video Proxy - if it finds them there -. Downloaded video streams are stored in download containers on the servers, where from they could be demanded any time for Control Center.
Camera focus setup
This is a function of the SCPlayer software. This function shows the actual picture, the size of the picture, a histogram with the change of the picture sizes and a diagram of the actual picture size in proportion to the maximum picture size.
The picture size is in direct proportion to the sharpness of the picture. The sharper the picture, the greater the picture size.
