Method For Automatic Exposure Control Within A Video Capture Device
    10.
    发明申请
    Method For Automatic Exposure Control Within A Video Capture Device 有权
    视频采集设备内自动曝光控制的方法

    公开(公告)号:US20100118159A1

    公开(公告)日:2010-05-13

    申请号:US12267505

    申请日:2008-11-07

    IPC分类号: H04N5/235

    摘要: On embodiment of the present invention sets forth a technique for automatically computing exposure parameters for a digital video camera (DVC) system. The exposure parameters include exposure gain, analog gain, and digital gain. Each frame is analyzed with respect to an image luma value. Exposure gain and analog gain are adjusted to reduce differences between a target image luma value and measured image luma values over sequential frames. Digital gain is adjusted with respect to each frame to reduce visually abrupt changes in sequentially captured video frames.

    摘要翻译: 本发明的实施例提出了一种用于自动计算数字摄像机(DVC)系统的曝光参数的技术。 曝光参数包括曝光增益,模拟增益和数字增益。 相对于图像亮度值分析每个帧。 调整曝光增益和模拟增益以减少目标图像亮度值与连续帧上测量的图像亮度值之间的差异。 相对于每个帧调整数字增益以减少顺序捕获的视频帧中的视觉上突然的变化。