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1. 发明申请

WO2011056994A3 ADAPTIVE AUTOMATIC EXPOSURE APPARATUS AND METHOD FOR DIGITAL IMAGES 审中-公开
标题翻译：数字图像的自适应自动曝光装置和方法
公开(公告)号：WO2011056994A3
公开(公告)日：2011-09-22
申请号：PCT/US2010055481
申请日：2010-11-04
申请人： UNIV TEXAS , RAHMAN MOHAMMAD T , KEHTARNAVAZ NASSER
发明人： RAHMAN MOHAMMAD T , KEHTARNAVAZ NASSER
IPC分类号： H04N5/232
CPC分类号： H04N5/235
摘要： An apparatus and method for automatically adjusting an exposure for a digital imaging device by (a) receiving a current image frame using an exposure value (EV), (b) computing a current image spatial entropy (ISE) for the current image frame, and (c) whenever the current ISE is greater than a previous ISE, setting the previous ISE equal to the current ISE, increasing the EV, and repeating steps (a) and (b), and (d) whenever the current ISE is less than or equal to the previous ISE, decreasing the EV, receiving the current image frame using the EV, and displaying the current image frame.
摘要翻译：一种用于通过（a）使用曝光值（EV）接收当前图像帧，（b）计算当前图像帧的当前图像空间熵（ISE），来自动调整数字成像设备的曝光的设备和方法，（c）每当当前ISE大于先前的ISE时，将先前的ISE设置为等于当前ISE，增加EV，并且重复步骤（a）和（b），以及（d）当前ISE小于或等于先前的ISE，减小EV，使用EV接收当前图像帧，并显示当前图像帧。

2. 发明申请

WO2010088079A3 AUTOMATIC FOCUSING APPARATUS AND METHOD FOR DIGITAL IMAGES USING AUTOMATIC FILTER SWITCHING 审中-公开
标题翻译：使用自动过滤器切换的自动聚焦装置和数字图像的方法
公开(公告)号：WO2010088079A3
公开(公告)日：2010-11-04
申请号：PCT/US2010021276
申请日：2010-01-15
申请人： UNIV TEXAS , GAMADIA MARK N , KEHTARNAVAZ NASSER
发明人： GAMADIA MARK N , KEHTARNAVAZ NASSER
IPC分类号： G03B13/20 , G02B7/09 , G03B13/18
CPC分类号： H04N5/23212
摘要： An apparatus and method for automatically focusing a lens of a digital imaging device, such as a digital still or video camera or camera phone, that reduces the auto focus time while not compromising image sharpness quality and simultaneously reducing device power consumption due to focus actuator movement, all without tuning or adjustment of thresholds or parameters is disclosed. The present invention automatically computes a set of digital band-pass filters matched to the imaging device specifications along with corresponding step-size magnitudes. A filter-switching search for the in-focus focus actuator position is formulated such that filters are switched and step-sizes are reduced as the search gets closer to the in-focus position by utilizing local estimates of the first and second-order differential information of the focus value surface.
摘要翻译：一种用于自动聚焦数字成像设备（例如数字静态或摄像机或照相机电话）的透镜的装置和方法，其减少自动聚焦时间，同时不影响图像清晰度质量并且同时降低由于聚焦致动器运动引起的设备功率消耗所有这些都没有调整或调整阈值或参数。本发明自动计算与成像装置规格相匹配的一组数字带通滤波器以及相应的步长幅度。制定对焦对焦致动器位置的滤波器切换搜索被形成为使得通过利用第一和第二差分信息的局部估计，随着搜索越接近对焦位置，滤波器被切换并且步长减小的焦点值表面。

3. 发明申请

WO2011056994A2 ADAPTIVE AUTOMATIC EXPOSURE APPARATUS AND METHOD FOR DIGITAL IMAGES 审中-公开
标题翻译：自适应自动曝光装置和数字图像的方法
公开(公告)号：WO2011056994A2
公开(公告)日：2011-05-12
申请号：PCT/US2010/055481
申请日：2010-11-04
申请人： BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM , RAHMAN, Mohammad, T. , KEHTARNAVAZ, Nasser
发明人： RAHMAN, Mohammad, T. , KEHTARNAVAZ, Nasser
IPC分类号： H04N5/232
CPC分类号： H04N5/235
摘要： An apparatus and method for automatically adjusting an exposure for a digital imaging device by (a) receiving a current image frame using an exposure value (EV), (b) computing a current image spatial entropy (ISE) for the current image frame, and (c) whenever the current ISE is greater than a previous ISE, setting the previous ISE equal to the current ISE, increasing the EV, and repeating steps (a) and (b), and (d) whenever the current ISE is less than or equal to the previous ISE, decreasing the EV, receiving the current image frame using the EV, and displaying the current image frame.
摘要翻译：一种用于通过（a）使用曝光值（EV）来接收当前图像帧来自动调整数字成像装置的曝光的装置和方法，（b）计算当前图像帧的当前图像空间熵（ISE），以及（c）每当当前ISE大于之前的ISE时，将先前的ISE设置为等于当前ISE，增加EV，并重复步骤（a）和（b），以及（d）每当当前ISE小于或等于之前的ISE，减小EV，使用EV接收当前图像帧，并显示当前图像帧。

4. 发明申请

WO2010088079A2 AUTOMATIC FOCUSING APPARATUS AND METHOD FOR DIGITAL IMAGES USING AUTOMATIC FILTER SWITCHING 审中-公开
标题翻译：利用自动滤波器切换的数字图像的自动聚焦装置和方法
公开(公告)号：WO2010088079A2
公开(公告)日：2010-08-05
申请号：PCT/US2010/021276
申请日：2010-01-15
申请人： THE BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM , GAMADIA, Mark, N. , KEHTARNAVAZ, Nasser
发明人： GAMADIA, Mark, N. , KEHTARNAVAZ, Nasser
IPC分类号： G03B13/20 , G03B13/18 , G02B7/09
CPC分类号： H04N5/23212
摘要： An apparatus and method for automatically focusing a lens of a digital imaging device, such as a digital still or video camera or camera phone, that reduces the auto focus time while not compromising image sharpness quality and simultaneously reducing device power consumption due to focus actuator movement, all without tuning or adjustment of thresholds or parameters is disclosed. The present invention automatically computes a set of digital band-pass filters matched to the imaging device specifications along with corresponding step-size magnitudes. A filter-switching search for the in-focus focus actuator position is formulated such that filters are switched and step-sizes are reduced as the search gets closer to the in-focus position by utilizing local estimates of the first and second-order differential information of the focus value surface.
摘要翻译：用于自动聚焦诸如数字静止或视频照相机或照相手机的数字成像设备的镜头的设备和方法，其减少自动对焦时间，同时不损害图像清晰度质量并同时减小公开了由于聚焦致动器移动引起的设备功耗，所有这些都没有调整或调整阈值或参数。本发明自动计算与成像设备规格匹配的一组数字带通滤波器以及相应的步长大小。对焦点聚焦致动器位置的滤波器切换搜索被制定为使得通过利用一阶和二阶差分信息的局部估计，当搜索靠近焦点对准位置时切换滤波器并且减小步长的焦点价值表面。

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