Numerical BLC stands for Back Light Compensation. Which is a feature commonly found in security cameras that helps to improve the visibility of backlit objects. Backlighting occurs when there is a vital source of light behind the object being viewed. Causing the thing to appear darker and more challenging to see.
BLC works by analyzing the overall brightness of the image and adjusting the exposure settings to compensate for the backlighting. This can help to bring out details in the foreground object that would otherwise be lost in the glare of the backlight.
Several different types of BLC can be used in security cameras. One common type is spot BLC. which targets a specific area of the image that is affected by backlighting and adjusts the exposure settings for that area only. Another type is global BLC, which changes the exposure settings for the entire image.
BLC is a useful feature for security cameras. As it can help to improve the accuracy of video footage and make it easier to identify objects and people in the image. However, it is important to note that BLC may only be effective in some lighting conditions. And may require some adjustments to work properly in different situations.
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