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1. 发明申请

US20100054621A1 DUAL LOOKUP TABLE DESIGN FOR EDGE-DIRECTED IMAGE SCALING 审中-公开
标题翻译：双向图表设计用于边缘方向图像缩放
公开(公告)号：US20100054621A1
公开(公告)日：2010-03-04
申请号：US12198404
申请日：2008-08-26
申请人： Yingyong Qi , King-Chung Lai , Millie Li , Chia-Yuan Teng
发明人： Yingyong Qi , King-Chung Lai , Millie Li , Chia-Yuan Teng
IPC分类号： G06K9/40
CPC分类号： G06T3/403
摘要： In general, the disclosure describes various techniques for providing edge-directed scaling filters that may be used to scale image data. An example device includes a storage medium configured to store a first lookup table and a second lookup table, and one or more processors configured to obtain one or more gradient values that each indicates a gradient between values of at least two pixels in a source image. The one or more processors are also configured to generate one or more inverse gradient values from a first lookup table based on the gradient values, and to generate one or more edge-directed scaling filter coefficients from a second lookup table based on the inverse gradient values. The one or more processors may be further configured to generate an edge-directed filter based on the coefficients, and to apply the filter to the at least two pixels to generate an interpolated pixel.
摘要翻译：通常，本公开描述了用于提供可用于缩放图像数据的边缘定向缩放滤波器的各种技术。示例设备包括被配置为存储第一查找表和第二查找表的存储介质，以及被配置为获得一个或多个梯度值的一个或多个处理器，每个梯度值指示源图像中的至少两个像素的值之间的梯度。一个或多个处理器还被配置为基于梯度值从第一查找表生成一个或多个逆梯度值，并且基于逆梯度值从第二查找表生成一个或多个边缘定向缩放滤波器系数。一个或多个处理器可以进一步被配置为基于系数生成边缘导向滤波器，并且将滤波器应用于至少两个像素以产生内插像素。

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