HD Multi SeaCam
®
Operator’s Manual
13
1.5
OSD Configuration Options Summary
1.5.1
FOCUS ADJUST - Focus Adjustment Aid
The FOCUS ADJUST menu option provides an on-screen tool for feedback in positioning and focusing the lens at the
factory and is not useful for field operations with the assembled HD Multi SeaCam.
1.5.2
LENS – Lens Light Level Control
There are two available level compensation modes:
1.
ALC – Automatic Level Control: primarily used with lenses equipped with an auto iris mechanism
2.
ELC – Electronic Level Control: uses sensor exposure correction to substitute the functionality of an auto iris
lens in some applications
The HD Multi SeaCam is equipped with a fixed aperture lens lending the ALC function inert, however laboratory testing
has shown that the ALC mode is still preferred as the default setting due to the small sensing area used in the ELC
algorithms.
1.5.3
EXPOSURE - Exposure Settings
The EXPOSURE menu allows user configured sensor exposure settings such as the electronic shutter speed, pixel
Automatic Gain Control (AGC), and multiple frame integration modes for higher low-light sensitivity (SENS-UP).
For most conditions, the Auto exposure mode will work best.
Enabling and increasing the SENS-UP value will allow the sensor to perform exposure integration periods longer than
the video frame rate to increase the amount of light collected on the imager. This will slow the effective refresh rate of
the video, increase latency, and add artifacts to dynamic scenes such as motion blur and increased pixel noise. Enabling
SENS-UP is generally not useful for subsea applications.
1.5.4
BACKLIGHT - Backlit Image Compensation
The BACKLIGHT menu offers mechanisms for compensating for back-lit scenes and is not often useful in subsea imaging
applications.
1.5.5
DAY&NIGHT – Low Light Image and Color Compensation Tools
The day/night mode of the camera module is primarily for security applications and is generally not useful in subsea
applications. This settings is fixed to provide a color image full-time in the factory default settings.
1.5.6
WHITE BALANCE – Image White Balance and Color Correction
Auto white balance mode will work in most situations where color accuracy is not critical. If a fixed white point is
needed, use the Manual settings menu to configure the camera for the specific application and lighting system. The
AUTO ext and PRESET modes are not supported.
1.5.7
3D-DNR – 3D Digital Noise Reduction
The 3D digital noise reduction engine in the image signal processor can help reduce the amount of pixel noise present
in low-light environments and is enabled by the factory default settings at the LOW level. There is little performance
difference observed with increasing the noise reduction level.
1.5.8
IMAGE – Video Image Tuning Options
The IMAGE menu offers access to a variety of tools for tuning the video color, image orientation, and other digital
imaging effects.
