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1. 发明公开

EP1594307A2 Clamp level adjusting apparatus, electronic camera, image processing apparatus, and image processing program 审中-公开
标题翻译： Klemmpegeleinstellvorrichtung，电子照相机，图像处理装置和程序
公开(公告)号：EP1594307A2
公开(公告)日：2005-11-09
申请号：EP05007665.2
申请日：2005-04-07
申请人： NIKON CORPORATION
发明人： Akihiko, Morishita
IPC分类号： H04N5/18
CPC分类号： H04N5/16 , H04N5/18 , H04N5/185
摘要： A clamp level adjusting apparatus of the invention includes: an image pickup device which has an effective pixel area for producing an image signal and a lightproof area formed around the effective pixel area to produce a black level standard signal; a clamp level calculating section for extracting the black level standard signal from an extracting range of a plurality of horizontal rows in the lightproof area and for producing a clamp level value corresponding to each horizontal row in the effective pixel area based on a vertical moving average value of black level standard signals in the extracting range; and a clamp section for correcting a black level of the image signal based on the clamp level value.

2. 发明公开

EP1594307A3 Clamp level adjusting apparatus, electronic camera, image processing apparatus, and image processing program 审中-公开
标题翻译： Klemmpegeleinstellvorrichtung，elektronische Kamera，Bildbearbeitungs-Vorrichtung und -Programm
公开(公告)号：EP1594307A3
公开(公告)日：2006-03-22
申请号：EP05007665.2
申请日：2005-04-07
申请人： NIKON CORPORATION
发明人： Akihiko, Morishita
IPC分类号： H04N5/18 , H04N5/16
CPC分类号： H04N5/16 , H04N5/18 , H04N5/185
摘要： A clamp level adjusting apparatus of the invention includes: an image pickup device which has an effective pixel area for producing an image signal and a lightproof area formed around the effective pixel area to produce a black level standard signal; a clamp level calculating section for extracting the black level standard signal from an extracting range of a plurality of horizontal rows in the lightproof area and for producing a clamp level value corresponding to each horizontal row in the effective pixel area based on a vertical moving average value of black level standard signals in the extracting range; and a clamp section for correcting a black level of the image signal based on the clamp level value.
摘要翻译：本发明的钳位电平调节装置包括：具有用于产生图像信号的有效像素区域和形成在有效像素区域周围的防光区域以产生黑电平标准信号的图像拾取装置; 钳位电平计算部分，用于从所述防光区域中的多个水平行的提取范围中提取黑电平标准信号，并且基于垂直移动平均值产生与所述有效像素区域中的每个水平行相对应的钳位电平值黑色电平标准信号在提取范围内; 以及用于基于钳位电平值校正图像信号的黑电平的钳位部分。

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