一种模拟视频信号亮度对比度校准方法

摘要

In this paper, analog video signal losses and shifts after long distance transmission is discussed. Software auto calibration is proposed to resolve the above-mentioned problem. A calibration pattern is sent from the video source and analyzed, and then the gain and offset parameters of video ADC is adjusted to obtain a best calibration of brightness and contrast.%本文针对模拟视频信号长距离传输后信号衰减和偏移的问题，提出一种软件自动校准的方法。通过分析源端发送的校准图样，调整视频AD芯片的增益和偏移参数，达到最佳的亮度和对比度校准效果。