公开(公告)号：US20050007475A1

公开(公告)日：2005-01-13

申请号：US10615052

申请日：2003-07-07

Applicant: Toshikazu Hori ,  Chik Cheng ,  Hai Lin

Inventor： Toshikazu Hori ,  Chik Cheng ,  Hai Lin

IPC: H04N3/14 ,  H04N5/217 ,  H04N5/361 ,  H04N5/372 ,  H04N9/64 ,  H04N5/335

CPC classification number: H04N5/3653 ,  H04N5/37213

Abstract: A camera comprises a multitap imager, separate digitizing channels for each imager tap, adjustments for channel gain and black level, a pattern generator, and a channel balancer. The channel balancer compares adjacent pixels and sums the differences in levels over many frames. Any accumulated difference is used as a feedback signal to drive the summing to a minimum. If the imager is temporarily hooded, the feedback is used to balance black levels between the channels. If the imager is operating, the feedback is used to dynamically adjust the channel gain of one channel to match the other. A pattern generator is used once during calibration to generate a test pattern in the digitizing channels that makes it obvious to a framegrabber how exactly to restitching the various lanes or zones of the whole image frame back together.

Abstract translation: 相机包括多重成像器，用于每个成像器抽头的单独的数字化通道，通道增益和黑色电平的调整，图案发生器和通道平衡器。 信道平衡器比较相邻像素，并且对多个帧中的电平差进行求和。 任何累加的差异被用作反馈信号以将求和推到最小。 如果成像器暂时被连接，则使用反馈来平衡通道之间的黑色电平。 如果成像器正在运行，则反馈用于动态调整一个通道的通道增益以匹配另一个通道。 在校准期间使用一个图案发生器，以在数字化通道中产生测试图案，这使得对于帧格式的显示器如何将整个图像帧的各个通道或区域重新整合在一起如何。