Axis Communications 232d+, 231D+ user manual MPEG-4Settings, Mjpeg, Image Settings

18AXIS 231D+/232D+ - Configuring the Network Dome Camera

IR cut filter ON and OFF, according to the current lighting conditions. This is only possible when the iris is set to Auto Iris, and the exposure control is set to Automatic.

•Wide dynamic range - Corrects the exposure when the contrast is extreme between light and dark in an image. Test the different levels to find the one that works best of your light conditions.

•Backlight compensation - this setting is used to make the subject appear clearer, for example, against a bright background.

Image Settings

•Auto focus enabled (default setting).

•Sensitivity - sets the speed of the auto focus. High is used when focusing on objects that move frequently. Low improves the stability of the focus.

Note: In certain situations, the white balancing system will not operate effectively. Problems may occur if the image contains no white color at all, or if the dominant color is not white. In these circumstances, the white balance may incorrectly be based on another visible color in the image, and colors may become dis- torted. A pale background picture with reddish or blue foreground objects is very symptomatic of this con- dition. In such cases it is recommended that a fixed white balance setting is selected.

Please use the online help files for more information.

MPEG-4 Settings

Here you can adjust the MPEG-4 settings and for controlling the video bit rate. The MPEG-4 standard provides many different coding tools for various applications in different situations. As most MPEG-4 clients do not support all of these tools, it is usual to instead define and use subsets for different clients or groups of clients. These settings allow you to define the type of viewing client to use.

Adjusting the maximum bit rate and setting it to variable or constant is a good way of controlling the bandwidth used by the MPEG-4 video stream.

For more information on these advanced settings, please see the online help files

MJPEG

In some situations the image size may get quite large due to low light or complex scenery. Adjusting the maximum frame size is a good way of controlling the bandwidth and storage used by the MJPEG video stream in these situations. Leaving the frame size at Unlimited will provide consistently good image quality at the expense of increased bandwidth and storage usage during low light. Limiting the frame size will prevent excessive bandwidth and storage usage, but image quality will suffer. To prevent increase in bandwidth and storage usage, the maximum frame size should be set to an optimal amount.