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    • 1. 发明授权
    • De-ringing operation for image processing
    • 去抖动操作进行图像处理
    • US08300948B2
    • 2012-10-30
    • US12400596
    • 2009-03-09
    • Bo ZhangAshish KoulOlivier Francois Joseph Harel
    • Bo ZhangAshish KoulOlivier Francois Joseph Harel
    • G06K9/48G06K9/40
    • 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/rocessing 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/加工装置中的一个或多个以产生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。
    • 2. 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。
    • 3. 发明申请
    • METHOD AND SYSTEM FOR KEY AWARE SCALING
    • 关键知识点的方法与系统
    • US20120044420A1
    • 2012-02-23
    • US12858068
    • 2010-08-17
    • Christopher PaysonTimothy HellmanAshish Koul
    • Christopher PaysonTimothy HellmanAshish Koul
    • H04N5/222
    • H04N5/45H04N5/265H04N21/4316H04N21/44
    • A video processing device may process video input comprising a plurality of streams, wherein images corresponding to at least some of the plurality of streams may be displayed concurrently. The video processing device may determine, prior to processing of a pixel in one of the plurality of streams whether the pixel comprises one or more keyed video parameters; and if the pixel comprises at least one keyed parameter, one or more other pixels may be selected, and a video parameter corresponding to the at least one keyed video parameter of the pixel may be generated based on the selected one or more other pixels. The generated video parameter may then be utilized instead of the at least one keyed video parameter during the processing of the pixel. This may comprise luma and/or chroma based scaling. Outputs of the processing of the pixel may be post-processed, by clamping at least one of the video parameters.
    • 视频处理设备可以处理包括多个流的视频输入,其中可以同时显示对应于多个流中的至少一些的图像。 在处理多个流中的一个流中的像素是否包括一个或多个键控的视频参数之前,视频处理设备可以确定: 并且如果像素包括至少一个键控参数,则可以选择一个或多个其他像素,并且可以基于所选择的一个或多个其他像素来生成与像素的至少一个键控视频参数对应的视频参数。 然后可以在像素的处理期间代替所生成的视频参数而不是至少一个带键的视频参数。 这可以包括亮度和/或基于色度的缩放。 可以通过钳位视频参数中的至少一个来对像素的处理的输出进行后处理。
    • 9. 发明授权
    • Method and system for key aware scaling
    • 密钥感知扩展的方法和系统
    • US08294822B2
    • 2012-10-23
    • US12858068
    • 2010-08-17
    • Christopher PaysonTimothy HellmanAshish Koul
    • Christopher PaysonTimothy HellmanAshish Koul
    • H04N5/14H04N9/74
    • H04N5/45H04N5/265H04N21/4316H04N21/44
    • A video processing device may process video input comprising a plurality of streams, wherein images corresponding to at least some of the plurality of streams may be displayed concurrently. The video processing device may determine, prior to processing of a pixel in one of the plurality of streams whether the pixel comprises one or more keyed video parameters; and if the pixel comprises at least one keyed parameter, one or more other pixels may be selected, and a video parameter corresponding to the at least one keyed video parameter of the pixel may be generated based on the selected one or more other pixels. The generated video parameter may then be utilized instead of the at least one keyed video parameter during the processing of the pixel. This may comprise luma and/or chroma based scaling. Outputs of the processing of the pixel may be post-processed, by clamping at least one of the video parameters.
    • 视频处理设备可以处理包括多个流的视频输入,其中可以同时显示对应于多个流中的至少一些的图像。 在处理多个流中的一个流中的像素是否包括一个或多个键控的视频参数之前,视频处理设备可以确定: 并且如果像素包括至少一个键控参数,则可以选择一个或多个其他像素,并且可以基于所选择的一个或多个其他像素来生成与像素的至少一个键控视频参数对应的视频参数。 然后可以在像素的处理期间代替所生成的视频参数而不是至少一个带键的视频参数。 这可以包括亮度和/或基于色度的缩放。 可以通过钳位视频参数中的至少一个来对像素的处理的输出进行后处理。