Method and system for detecting analog noise in the presence of mosquito noise
    2.
    发明授权
    Method and system for detecting analog noise in the presence of mosquito noise 有权
    在存在蚊子噪音的情况下检测模拟噪声的方法和系统

    公开(公告)号:US08879000B2

    公开(公告)日:2014-11-04

    申请号:US12976281

    申请日:2010-12-22

    IPC分类号: H04N5/00 G06K9/40 H04N5/213

    CPC分类号: H04N5/213

    摘要: A method and system are provided in which a processor, such as a video processor, may determine a flatness value for a current video picture and may adjust a mosquito noise filtering of a subsequent video picture based on the determined flatness value. The flatness value may be determined within a predetermined region of the current video picture, which may be dynamically modified by the processor. The flatness value may be associated with the presence of analog noise in the current video picture, and may be determined based on horizontal and vertical variance values determined for one or more portions of the current video picture. The processor may adjust a mosquito noise strength value of the current video picture based on the determined flatness value and may adjust the mosquito noise filtering of the subsequent video picture based on the adjusted mosquito noise strength value of the current video picture.

    摘要翻译: 提供了一种方法和系统,其中诸如视频处理器的处理器可以确定当前视频图像的平坦度值,并且可以基于确定的平坦度值来调整后续视频图像的蚊式噪声滤波。 可以在当前视频图像的预定区域内确定平坦度值,该区域可由处理器动态修改。 平坦度值可以与当前视频图像中的模拟噪声的存在相关联,并且可以基于为当前视频图像的一个或多个部分确定的水平和垂直方差值来确定。 处理器可以基于确定的平坦度值来调整当前视频图像的蚊式噪声强度值,并且可以基于当前视频图像的调整的蚊式噪声强度值来调整后续视频图像的蚊式噪声滤波。

    Method and system for processing chroma signals
    3.
    发明授权
    Method and system for processing chroma signals 失效
    处理色度信号的方法和系统

    公开(公告)号:US08754990B2

    公开(公告)日:2014-06-17

    申请号:US11855678

    申请日:2007-09-14

    IPC分类号: H04N9/78

    CPC分类号: H04N9/77

    摘要: Methods and systems for processing chroma signals are disclosed. Aspects of one method may include compensating a modulated chroma signal for distortions due to audio trap filtering. The compensated chroma signal may be demodulated to generate U and V chroma signals. The U and V chroma signals may be low pass filtered, and then YC aligned. YC alignment may comprise correcting portions of the U and V chroma signals based on the luma signal. The correction may be based on, for example, correlation between the U and V chroma signals and the Y luma signal, and/or energy level of the Y luma signal. The corrected U and V chroma signals may be chroma sharpened, where a gain parameter may be changed to change a transition slope for the U and V chroma signals. The chroma sharpened signals may also be clamped to reduce overshoot and undershoot.

    摘要翻译: 公开了用于处理色度信号的方法和系统。 一种方法的方面可以包括补偿由于音频陷波滤波引起的失真的调制色度信号。 补偿色度信号可被解调以产生U和V色度信号。 U和V色度信号可以低通滤波,然后YC对齐。 YC对准可以包括基于亮度信号校正U和V色度信号的部分。 校正可以基于例如U和V色度信号与Y亮度信号之间的相关性和/或Y亮度信号的能级。 校正的U和V色度信号可以是色度锐化的,其中可以改变增益参数以改变U和V色度信号的转变斜率。 色度锐化的信号也可以被钳位以减少过冲和下冲。

    Video source resolution detection
    4.
    发明授权
    Video source resolution detection 有权
    视频源分辨率检测

    公开(公告)号:US08373801B1

    公开(公告)日:2013-02-12

    申请号:US13213729

    申请日:2011-08-19

    IPC分类号: H04N5/21

    摘要: Embodiments for video content source resolution detection are provided. Embodiments enable systems and methods that measure video content source resolution and that provide image-by-image source scale factor measurements to picture quality (PQ) processing modules. With the source scale factor information. PQ processing modules can be adapted dynamically (on a picture-by-picture basis) according to the source scale factor information for better picture quality enhancement. In addition, embodiments provide source resolution detection that is minimally affected by video coding artifacts and superimposed content (e.g., graphics).

    摘要翻译: 提供了用于视频内容源分辨率检测的实施例。 实施例使得能够测量视频内容源分辨率并且向图像质量(PQ)处理模块提供逐像素源比例因子测量的系统和方法。 利用源比例因子信息,PQ处理模块可以根据源比例因子信息进行动态调整(逐个逐个图像),以提高图像质量。 此外,实施例提供了受视频编码伪影和叠加内容(例如,图形)的影响最小的源分辨率检测。

    Method and system for reducing the appearance of jaggies when deinterlacing moving edges
    5.
    发明授权
    Method and system for reducing the appearance of jaggies when deinterlacing moving edges 失效
    去隔行移动边缘时减少锯齿的外观的方法和系统

    公开(公告)号:US08004614B2

    公开(公告)日:2011-08-23

    申请号:US11386191

    申请日:2006-03-22

    IPC分类号: H04N5/14 H04N9/64

    CPC分类号: H04N5/142 H04N5/144 H04N7/012

    摘要: A method and system for reducing the appearance of jaggies when deinterlacing moving edges in a video processing system are provided. The method may comprise detecting the direction of an angled edge in an interlaced video image to determine a filtering direction to be used for approximating absent pixels in deinterlacing the interlaced video. In detecting the direction of the angled edge, a group of windows of different sizes may be used to look at the edge, where a missing pixel is the center of each of the windows. Detecting the direction of the edge, and therefore the direction of filtering, may comprise: determining the angle associated with the edge, determining the strength of the edge, examining the pixels surrounding the absent pixel, and adjusting the first angle measure and the second angle measure based on the pattern of the surrounding pixels.

    摘要翻译: 提供了一种用于在视频处理系统中去隔行移动边缘时减少锯齿形外观的方法和系统。 该方法可以包括检测隔行视频图像中的成角度边缘的方向,以确定用于在隔行隔行扫描视频中近似不存在像素的滤波方向。 在检测成角度边缘的方向时,可以使用不同大小的一组窗口来观察边缘,其中丢失像素是每个窗口的中心。 检测边缘的方向以及滤波方向可以包括:确定与边缘相关联的角度,确定边缘的强度,检查不存在的像素周围的像素,以及调整第一角度测量和第二角度 基于周围像素的图案进行测量。

    System and method for edge sharpening
    6.
    发明授权
    System and method for edge sharpening 有权
    边缘锐化的系统和方法

    公开(公告)号:US07957606B2

    公开(公告)日:2011-06-07

    申请号:US11491599

    申请日:2006-07-24

    申请人: Brian Schoner

    发明人: Brian Schoner

    IPC分类号: G06K9/40 G06K15/00 G09G5/00

    摘要: Presented herein are a system and method for sharpening edges in a region. In one embodiment, there is presented a method for sharpening edges. The method comprises measuring differences between at least a value associated with a first pixel and a value associated with a second pixel of a plurality of pixels; and applying a sharpening mask to the plurality of pixels, wherein the sharpening mask is a function of at least one of the measured differences, a first value associated with any one of the plurality of pixels, and a second value associated with any other of the pixels, thereby resulting in sharpened pixels.

    摘要翻译: 这里提出的是用于锐化区域中的边缘的系统和方法。 在一个实施例中,提供了用于锐化边缘的方法。 该方法包括测量至少与第一像素相关联的值与与多个像素中的第二像素相关联的值之间的差异; 以及将锐化掩模施加到所述多个像素,其中所述锐化掩模是所测量的差异中的至少一个的函数,与所述多个像素中的任一个相关联的第一值,以及与所述多个像素中的任一个相关联的第二值 像素,从而产生锐利的像素。

    NCO based timebase recovery system and method for A/V decoder
    7.
    发明授权
    NCO based timebase recovery system and method for A/V decoder 有权
    基于NCO的时基恢复系统和A / V解码器的方法

    公开(公告)号:US07852160B2

    公开(公告)日:2010-12-14

    申请号:US11178567

    申请日:2005-07-11

    申请人: Brian Schoner

    发明人: Brian Schoner

    IPC分类号: H03L7/00

    摘要: Systems and methods are disclosed for recovering a clock or time reference for A/V systems. One method comprises receiving at least one input time reference generated using a first clock and generating, using a second clock asynchronous to the first clock, at least one time reference value representative of the at least one input time reference. The method further comprises outputting the generated time reference value used by the A/V system.

    摘要翻译: 公开了用于恢复A / V系统的时钟或时间参考的系统和方法。 一种方法包括接收使用第一时钟生成的至少一个输入时间基准,并使用与第一时钟异步的第二时钟产生表示至少一个输入时间基准的至少一个时间基准值。 该方法还包括输出由A / V系统使用的生成的时间基准值。

    Method and system for improving the appearances of deinterlaced chroma formatted video
    9.
    发明申请
    Method and system for improving the appearances of deinterlaced chroma formatted video 有权
    改进去隔行色度格式视频外观的方法和系统

    公开(公告)号:US20070182848A1

    公开(公告)日:2007-08-09

    申请号:US11349658

    申请日:2006-02-08

    IPC分类号: H04N7/01

    CPC分类号: H04N7/012 H04N9/64

    摘要: Herein described is a system and method for improving the appearance of video by generating an improved 4:2:2 chroma. The system comprises a 4:2:2 to 4:2:0 chroma regenerator that regenerates 4:2:0 chroma given a received 4:2:2 chroma, and a 4:2:0 to 4:2:2 chroma generator that weaves and interpolates the regenerated 4:2:0 chroma to yield an adjusted 4:2:2 chroma. The system further comprises a blending system used for blending the adjusted 4:2:2 chroma with the received 4:2:2 chroma based on a control input provided by a motion indication signal. The method comprises regenerating a 4:2:0 chroma from a received 4:2:2 chroma using an algorithm. The method further comprises generating an adjusted 4:2:2 chroma using the regenerated 4:2:0 chroma using another algorithm. The method further comprises blending the adjusted 4:2:2 chroma with the received 4:2:2 chroma to generate an improved 4:2:2 chroma.

    摘要翻译: 这里描述了通过产生改进的4:2:2色度来改善视频外观的系统和方法。 该系统包括4:2:2至4:2:0色度再生器,其以4:2:2色度和4:2:0至4:2:2色度发生器再生4:2:0色度 编织和内插再生的4:2:0色度以产生调整的4:2:2色度。 该系统还包括一个混合系统,用于基于由运动指示信号提供的控制输入将调整后的4:2:2色度与接收到的4:2:2色度进行混合。 该方法包括使用算法从接收到的4:2:2色度再生4:2:0色度。 该方法还包括使用另一种算法使用再生的4:2:0色度生成调整后的4:2:2色度。 该方法还包括将经调节的4:2:2色度与接收的4:2:2色度混合以产生改进的4:2:2色度。

    Method and system for implementing film grain insertion
    10.
    发明申请
    Method and system for implementing film grain insertion 失效
    实施胶片颗粒插入的方法和系统

    公开(公告)号:US20060183275A1

    公开(公告)日:2006-08-17

    申请号:US11274695

    申请日:2005-11-15

    IPC分类号: H01L21/84 H01L27/148

    摘要: Aspects of a system and method for processing video data may comprise, for each line of a field of an image, generating noise based on a current seed, inserting the generated noise in a current line of the field, and generating a new seed for processing a subsequent line of the field by shifting the current seed. The current seed may be used to generate a random number and the generated noise may be produced using this generated random number.

    摘要翻译: 用于处理视频数据的系统和方法的方面可以包括对于图像的场的每一行,基于当前种子生成噪声,将生成的噪声插入到场的当前行中,并且生成用于处理的新种子 通过移动当前的种子,该字段的后续行。 可以使用当前种子来产生随机数,并且可以使用该生成的随机数产生所产生的噪声。