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1. 发明授权

US07471320B2 Electronic pan tilt zoom video camera with adaptive edge sharpening filter 有权
标题翻译：具有自适应边缘锐化滤波器的电子摇摄变焦摄像机
公开(公告)号：US07471320B2
公开(公告)日：2008-12-30
申请号：US10425535
申请日：2003-04-29
申请人： Kenneth W. Malkin , Larry K. Baxter , Steven C. Taetzsch , Daniel R. Phelps
发明人： Kenneth W. Malkin , Larry K. Baxter , Steven C. Taetzsch , Daniel R. Phelps
IPC分类号： H04N5/208
CPC分类号： H04N5/208
摘要： An apparatus and a method is provided for enhancing a digital image comprised of pixels by adaptively sharpening the pixels and clipping the numerical values of the sharpened edge pixels so as to fall between the smallest unsharpened numerical value and the greatest unsharpened numerical value, respectively, of the pixels located within a neighborhood of the pixels. Pixels which are located on an edge are sharpened in the direction perpendicular to the edge. The threshold value used to ascertain the presence of an edge and sharpening parameter used to control the degree of sharpening can be adaptively controlled by the zoom ratio. The apparatus of the invention is particularly suited for an electronic set-top video camera.
摘要翻译：提供了一种装置和方法，用于通过自适应地锐化像素并削减锐化的边缘像素的数值，以分别落在最小的未钝化数值和最大未钝化数值之间来增强包括像素的数字图像位于像素附近的像素。位于边缘上的像素在与边缘垂直的方向上被锐化。用于确定用于控制锐化程度的边缘的存在和锐化参数的阈值可以由缩放倍率自适应地控制。本发明的装置特别适用于电子机顶视频摄像机。

2. 发明授权

US06704048B1 Adaptive electronic zoom control 失效
标题翻译：自适应电子变焦控制
公开(公告)号：US06704048B1
公开(公告)日：2004-03-09
申请号：US09140941
申请日：1998-08-27
申请人： Kenneth W. Malkin , Larry K. Baxter
发明人： Kenneth W. Malkin , Larry K. Baxter
IPC分类号： G09G500
CPC分类号： G06T3/40 , H04N5/3454 , H04N7/142
摘要： An adaptive electronic zoom system is described which includes an electronic camera having an image sensor with pixels, a controller communicating with an address generator to select in response to an external input or feedback signals from the electronic camera a subset of pixels from the pixels of the image sensor, the subset of pixels defining a zoom area. The zoom area can be located at any position within the image sensor area. The zoom ratio/pan/tilt of the zoom area is automatically adjusted so as to maintain the location of the zoom area entirely within the image sensor area. The adaptive electronic zoom system is particularly suited for set-top boxes for video conferencing applications.
摘要翻译：描述了一种自适应电子变焦系统，其包括具有带有像素的图像传感器的电子照相机，与地址发生器通信的控制器，以响应于外部输入或来自电子照相机的反馈信号来选择来自所述像素的像素的子集图像传感器，定义缩放区域的像素子集。变焦区域可以位于图像传感器区域内的任何位置。自动调整变焦区域的变焦比/平移/俯仰，以便将变焦区域的位置完全保持在图像传感器区域内。自适应电子变焦系统特别适用于视频会议应用的机顶盒。

3. 发明授权

US06614474B1 Electronic pan tilt zoom video camera with adaptive edge sharpening filter 有权
公开(公告)号：US06614474B1
公开(公告)日：2003-09-02
申请号：US09141057
申请日：1998-08-27
申请人： Kenneth W. Malkin , Larry K. Baxter , Steven C. Taetzsch , Daniel R. Phelps
发明人： Kenneth W. Malkin , Larry K. Baxter , Steven C. Taetzsch , Daniel R. Phelps
IPC分类号： H04N5208
CPC分类号： H04N5/208
摘要： An apparatus and a method is provided for enhancing a digital image comprised of pixels by adaptively sharpening the pixels and clipping the numerical values of the sharpened edge pixels so as to fall between the smallest unsharpened numerical value and the greatest unsharpened numerical value, respectively, of the pixels located within a neighborhood of the pixels. Pixels which are located on an edge are sharpened in the direction perpendicular to the edge. The threshold value used to ascertain the presence of an edge and sharpening parameter used to control the degree of sharpening can be adaptively controlled by the zoom ratio. The apparatus of the invention is particularly suited for an electronic set-top video camera.

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