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1.
公开(公告)号:US5822467A
公开(公告)日:1998-10-13
申请号:US773428
申请日:1996-12-27
申请人: Patricia D. Lopez , Hal Hansen , Jeffrey P. Lee
发明人: Patricia D. Lopez , Hal Hansen , Jeffrey P. Lee
CPC分类号: H04N1/4092
摘要: A method of filtering images with a filter that is dependent on image type. For binary images, a fixed Laplacian filter is used for all pixels. For non-binary images, an automatic level-sensitive Laplacian filter is used. For non-binary images, Laplacian filter coefficients and normalization divisors are made a function of intensity on a pixel by pixel basis. Pixels indicating a high intensity may be greatly changed by neighboring pixels. Pixels indicating a low intensity receive relatively little or no filtering. In a specific example embodiment, the intensity range is divided to bands, with a different filter for each band. The resulting images are visually sharpened (edge enhanced) with very little impact in darker areas of the image.
摘要翻译: 使用依赖于图像类型的过滤器过滤图像的方法。 对于二进制图像,固定的拉普拉斯滤波器用于所有像素。 对于非二进制图像,使用自动电平敏感的拉普拉斯滤波器。 对于非二进制图像,将拉普拉斯滤波器系数和归一化因数作为逐个像素的强度函数。 指示高强度的像素可能被相邻像素极大地改变。 指示低强度的像素接收相对较少或不进行滤波。 在具体的示例性实施例中,强度范围被划分为带,每个频带具有不同的滤波器。 所得到的图像在图像的较暗区域中以非常小的影响被视觉上锐化(边缘增强)。
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2.
公开(公告)号:US06714952B2
公开(公告)日:2004-03-30
申请号:US09438137
申请日:1999-11-10
申请人: Scott Dunham , Rulian Fiske , Hal Hansen , Sanjay Jain , Madhav Mutalik , Edgar St. Pierre , Puneet Lal , Uresh Vahalia
发明人: Scott Dunham , Rulian Fiske , Hal Hansen , Sanjay Jain , Madhav Mutalik , Edgar St. Pierre , Puneet Lal , Uresh Vahalia
IPC分类号: G06F1200
CPC分类号: G06F11/1464 , Y10S707/959 , Y10S707/99955
摘要: Described is a technique for a backup and restoration of data in a network that includes a multi-lingual file system and a multi-lingual network file server. Multiple meta data files are associated with a single data file in the network. Provided are services for packaging the metadata as a single parameter of an application programming interface (API) for a particular data file being backed up or restored over a network. These techniques may be used in both full and incremental backups and restores of data over a network.
摘要翻译: 描述了一种用于在包括多语言文件系统和多语言网络文件服务器的网络中备份和恢复数据的技术。 多个元数据文件与网络中的单个数据文件相关联。 提供了将元数据作为用于通过网络备份或恢复的特定数据文件的应用程序编程接口(API)的单个参数来打包的服务。 这些技术可以用于通过网络进行全面备份和增量备份和恢复数据。
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