专利检索 ap:"Automatic recognition & control Inc." 第 1 页

1.

发明公开
EXTENDED DEPTH OF FIELD USING A MULTI-FOCAL LENGTH LENS WITH A CONTROLLED RANGE OF SPHERICAL ABERRATION AND CENTRALLY OBSCURED APERTURE 审中-公开
标题翻译：景深扩展使用多焦距镜头与控制区的球面像差和中央掩蔽的通光孔径

公开(公告)号：EP1789830A2

公开(公告)日：2007-05-30

申请号：EP05748290.3

申请日：2005-05-11

申请人： Automatic recognition & control Inc.

发明人： GEORGE, Nicholas , CHI, Wanli

IPC分类号： G02B13/18 , G02B13/00 , G02B3/02 , G02B3/10 , G02B9/00 , G02B9/08 , G02B27/10

CPC分类号： G02B27/0075 , G06T5/50 , H04N5/23229

摘要： An extended depth of field is achieved by a computational imaging system that combines a multifocal imaging subsystem for producing a purposefully blurred intermediate image with a digital processing subsystem for producing a recovered image having an extended depth of field. The multifocal imaging system preferably exhibits spherical aberration as the dominant feature of the purposeful blur. A central obscuration of the multifocal imaging subsystem renders point-spread functions of object points more uniform over a range of object distances. An iterative digital deconvolution algorithm for converting the intermediate image into the recovered image contains a metric parameter that speeds convergence, avoids stagnations, and enhances image quality.