The webcam is a video camera that captures, digitizes and transmits images in real time to a computer or computer network. Connects to PC via USB or (rarely) FireWire; are supplied from the same interface without requiring a separate power supply. Usually has a low resolution (640x480 pixels) because of the low rate of data transmission via USB 1.1 or 2.0, but there are variants with high resolution using USB 3.0.Cele several models have a simple optical without focus (focus fixed, set in the factory to the usual distance from the monitor to which it is attached and to the user) or manual focus. Some webcams integrates a microphone, sound transmission is being made by digital computer via USB cable or analog audio cable to the computer’s sound card. Some models have a range of white LEDs that provide illumination light situations slabă.Camerele face web can be used to shoot videos and stills photography. You can use different software for this, as PicMaster (for use with Windows operating systems), Photo Booth (Mac) or Cheese (for Unix) .It can use camera software for video stream from a webcam to help or enhance a user’s control of applications and games. Video features, including faces, shapes, patterns and colors can be observed and monitored to produce an appropriate control pattern. For example, the position of a single source of light can be tracked and used to mimic the mouse pointer and a light source mounted on the head would allow computer without having to hand over increasing the accessibility of the computer. It can be used in games such as providing additional control, improving interactivity and imersivitatea.
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