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    • 74. 发明申请
    • De-ringing operation for image processing
    • 去抖动操作进行图像处理
    • US20100135592A1
    • 2010-06-03
    • US12400596
    • 2009-03-09
    • Bo ZhangAshish KoulOlivier Francois Joseph Harel
    • Bo ZhangAshish KoulOlivier Francois Joseph Harel
    • G06K9/40H04N5/00H04N5/44
    • H04N5/21H04N5/142
    • De-ringing operation for image processing. A selective image processing means is presented herein by which high frequency content is preserved while also eliminating ringing within digital images, and this is achieved without introducing aliasing. Based on the analysis of neighboring pixels, one or more of multiple filter modules and/or multiple image filtering/processing means is/are selectively applied to generate an output sample for a given pixel location. Two measures (e.g., local activity (LA) and edge strength (ES)) are calculated based on processing at least two different groups of pixels near a desired output sample. One of these groups of pixels may be a subset of another of the groups of pixels. By analyzing these two measures (e.g., LA and ES), selective processing of pixels near the desired output location ensures that high frequency content within the digital image is preserved with substantially reduced and/or eliminated ringing therein.
    • 去抖动操作进行图像处理。 本文提出了选择性图像处理装置,通过该选择图像处理装置保持高频内容,同时还消除数字图像内的振铃,并且在不引入混叠的情况下实现。 基于相邻像素的分析,选择性地应用多个滤波器模块和/或多个图像滤波/处理装置中的一个或多个以产生用于给定像素位置的输出样本。 基于在期望的输出样本附近处理至少两个不同的像素组来计算两个度量(例如,局部活动(LA)和边缘强度(ES))。 这些像素组之一可以是像素组中另一组的子集。 通过分析这两个测量(例如LA和ES),对期望输出位置附近的像素的选择性处理确保数字图像内的高频内容被保留,其中基本上减少和/或消除振铃。