ip camera system
30.07.2014., srijeda
White balance is used only for color cameras
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Typically backlight compensation, AGC operating point of the camera by the content of the field of view is determined by averaging, but if the field ip camera wireless ip camera contains a bright background and a dark region of a foreground object, the AGC determined this time operating point may not be enough for the right foreground objects, background light compensation likely to improve the prospects of the target display status. When the backlight compensation is turned on, the camera is only averaging a sub-region of the entire field to determine its AGC operating point, at this time if the foreground object is located in the sub-region, is expected to improve the visibility of foreground objects. (4) in the CCD camera electronic shutter is electronically controlled by an optical imaging surface charge accumulation time to manipulate the shutter. CCD camera electronic shutter control of the accumulated time when the electronic shutter is closed, an NTSC camera, the CCD accumulation time is 1/60 seconds; For PAL camera is 1/50 seconds. When the camera's electronic ip camera system 4ch NVR Recorder shutter open for NTSC video cameras, electronic shutter to cover the 261 steps from 1/60 to 1/10000 second range; For PAL camera, its electronic shutter steps covering surveillance camera network camera 311 places from 1/50 seconds to the range of 1/10000 sec. When the electronic shutter speed increases, the time in each video field allows focusing light on the CCD is reduced, the result will reduce the sensitivity of the camera, however, the observed higher shutter speed for the moving image generates a 'halt operation' effect, which will greatly increase the dynamic resolution of the camera. (5) White balance is used only for color cameras, its purpose is to achieve the camera image can accurately reflect the scene condition, a manual white balance and auto white balance in two ways. A, continuous automatic white balance mode - this time with the change of scenery surveillance camera security systems will set the white balance color temperature and continuously adjusted in the range of 2800 ~ 6000K. This way the color temperature of the scene during the shooting of changing situations is the most suitable, so the natural color performance, but when the scene is little or no white, continuous color balance can not produce the best results. Button ways - such as the first camera at a white wall, white and other white target, and then will automatically switch to the setting mode from the manual position, remains in that position for a few seconds or up to the image appears white, the white balance is performed after, it will automatically switch back to manual mode position to lock the white balance settings, white balance settings at this time the camera will remain in memory until they are changed 4ch NVR Recorder again to perform, the range of 2300 ~ 10000K, during this period, even though camera power is not lost in the setting. Button to set the white balance to the way the most accurate and reliable, suitable for most applications. B, open the manual white balance manually turn the auto white balance, then the change in status of the red or blue image up to 107 level for the regulation, such as an increase or decrease in the level of red, blue, one each to increase or decrease level. In addition to the times, some of the camera as well as the white balance fixed at 3200K (incandescent level) and 5500K (daylight levels) and other grades of command. (6) color adjustment for most applications, the camera is not required to make color adjustments, adjustments need to be adjusted carefully so as not to affect other need color, adjustable ip camera system 16ch NVR Recorder color ways: red - yellow color increases, then the red magenta to move one step. Red - yellow color reduce, then the red to yellow to move step. Blue - yellow color increases, then blue to green to network camera surveillance system blue to move step. Blue - yellow color reduce, then the blue to magenta to move step. 3, digital control method to adjust the formula The new camera to adjust security systems surveillance system the foregoing optional parameter adjustment with digital control, this time without having to manually adjust potentiometers instead of using an auxiliary control codes, and these tuning parameters are stored in digital memory unit, increasing the stability and reliability . |
