[Studies in Computational Intelligence 481] Artur Babiarz, Robert Bieda, Karol Jędrasiak, Aleksander Nawrat (auth.), Aleksander Nawrat, Zygmunt Kuś (eds.) - Vision Based Systemsfor UAV Applications (2013, Sprin

Machine Vision in Autonomous Systems of Detection and Location 17
o “viewstream” – defines the video stream number passed from the camera
to the client application image control (for cameras operating on few
video streams at one time);
o “color” – switches on/off the option from colorful image to monochrome
( when the “b/w ni low lux mode” is inactive);
o “flip” – switches on/off the option of reflexion of an image on its
horizontal axis;
o “mirror” – switches on/off the option of reflexion of an image on its
vertical axis;
o “low lux mode” – switches on/off the CCD matrix functioning in difficult
lighting conditions (increases the sensor sensitiveness);
o “b/w in low lux mode” – switches on/off the automatic switch to
monochrome function type of the image when the camera works in
difficult lighting conditions. (“low lux mode”);
o “electronic shutter” – defines the time(by seconds) of activation of one
frame in the video sequence (the time of opening the aperture) [auto,
1/50, 1/100, 1/250, 1/500, 1/1000, 1/2000, 1/4000];
o “white balance mode” – defines the whiteness correlation balance of the
acquired image [autotracking, manualcontrol];
o “wbc (auto/manual)” – defines, respectively, the whiteness balance in the
automatic mode [0,…,8] and the light source temperature defined in
Kelvins. [3200, 4000, 4800, 5600, 6400, 7200, 8000, 8800, 9600];
o “backlight compensation” – switches on/off the compensation options of
bright light sources in the view field of the camera;
o “blc level” – defines the compensation level of the light sources in the
view field of the camera [0,…,7].
2.9 The Movement Control Module of PTC Camera
The tested camera enables the rotation of the matrix CCD head around both axis
and its “dislocation” in the optical axis of the image (magnification of the image).
Moreover, as a camera designer for monitoring, it allowed functioning in “auto
pan” mode (automatic scanning of the environment in the horizontal of the
camera’s rotation movement) and in the “patrol” mode (scanning the environment
including the defined control points). Additionally it also enables the control over
the zooming (magnification) degree, the image sharpness and aperture opening
size. The functionality of the camera enabling the control of the “movement” of its
individual element was included in VVT_PTZCONTROL.vi module, Fig. 10a.
The description of the input/output signals:
The module of controlling the camera movement works primarily in the input
parameter definition module (commanding succeeding movement orders). The
content of the “ptz camera control” is presented on fig. 11b: