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    Indexed Color Values In Image Coding
    3.
    发明申请
    Indexed Color Values In Image Coding 有权
    图像编码中的索引颜色值

    公开(公告)号：US20160269755A1

    公开(公告)日：2016-09-15

    申请号：US15164222

    申请日：2016-05-25

    Applicant: Broadcom Corporation

    Inventor： Alexander Garland MacInnis ,  Frederick George Walls

    IPC: H04N19/94 ,  H04N19/593 ,  H04N19/182 ,  H04N19/103 ,  H04N19/154

    CPC classification number: H04N19/94 ,  H04N19/103 ,  H04N19/154 ,  H04N19/182 ,  H04N19/593

    Abstract: Coding circuitry may implement an indexed set of color values that stores color values for a neighbor pixel group. The coding circuitry may obtain a current pixel group for coding. The coding circuitry may code the current pixel group using the indexed set of color values when an indication that there is a compression advantage to coding using the indexed set of color values is present within an input stream. When the indication is not present, the coding circuitry may code the current pixel group using another coding technique.

    Abstract translation: 编码电路可以实现存储相邻像素组的颜色值的索引的一组颜色值。 编码电路可以获得用于编码的当前像素组。 编码电路可以使用索引的颜色值集合来编码当前像素组，当在输入流内存在使用索引的颜色值集合进行编码时具有压缩优势的指示。 当指示不存在时，编码电路可以使用另一编码技术对当前像素组进行编码。

    High-Throughput Image and Video Compression
    4.
    发明申请
    High-Throughput Image and Video Compression 有权
    高吞吐量图像和视频压缩

    公开(公告)号：US20140247983A1

    公开(公告)日：2014-09-04

    申请号：US14222004

    申请日：2014-03-21

    Applicant: Broadcom Corporation

    Inventor： Alexander Garland MacInnis ,  Frederick George Walls ,  Brian Francis Schoner

    IPC: G06T9/00

    CPC classification number: G06T9/00 ,  H04N19/103 ,  H04N19/14 ,  H04N19/152 ,  H04N19/186 ,  H04N19/80

    Abstract: A system implements multiple coding formats for coding pixels within a picture. The formats may be selected based on one or more of the input picture and encoding variables. The coding formats may have varying chroma sampling densities. Filtering may be applied to convert among the various formats or to convert a sampled input to a specific chroma sampling density. The format associated with various groups within a coded bitstream may be changed to adapt to evolution of the one or more variables or inputs.

    Abstract translation: 系统实现用于编码图像内的像素的多种编码格式。 可以基于输入图像和编码变量中的一个或多个选择格式。 编码格式可以具有不同的色度采样密度。 可以应用滤波以在各种格式之间进行转换，或者将采样输入转换为特定的色度采样密度。 可以改变与编码比特流内的各个组相关联的格式以适应一个或多个变量或输入的演进。

    REDUCTION OF I-PULSING ARTIFACTS
    5.
    发明申请
    REDUCTION OF I-PULSING ARTIFACTS 审中-公开
    减少I-PULSING ARTIFACTS

    公开(公告)号：US20140177717A1

    公开(公告)日：2014-06-26

    申请号：US13832799

    申请日：2013-03-15

    Applicant: BROADCOM CORPORATION

    Inventor： Junlin Li ,  Alexander Garland MacInnis ,  Brad Albert Delanghe ,  Lei Zhang

    IPC: H04N7/26

    CPC classification number: H04N19/00909 ,  H04N19/136 ,  H04N19/159 ,  H04N19/40 ,  H04N19/86

    Abstract: Various methods and systems are provided for reduction of I-pulsing artifacts. In one example, among others, a method includes modifying at least a portion of a picture to be encoded as an I picture based at least in part upon a picture that precedes the picture. The modification can reduce an I-pulsing artifact associated with the I picture. The modified picture is intra-coded for inclusion in a series of encoded pictures, which may then be transmitted. In another example, an encoder includes adaptive pre-processing circuitry configured to modify at least a portion of a first picture based at least in part upon a second picture that precedes the first picture in a series of video pictures. For example, the modification may be based upon coding noise associated with the preceding picture. Intra-encoding processing circuitry is configured to encode the modified picture as an I picture.

    Abstract translation: 提供了各种方法和系统来减少I脉冲伪像。 在一个示例中，除其他之外，方法包括至少部分地基于图片之前的图片来修改要编码为I图片的图片的至少一部分。 该修改可以减少与I图像相关联的I脉冲伪影。 经修改的图像被内编码以包含在一系列编码图像中，然后可以传输它们。 在另一示例中，编码器包括自适应预处理电路，其被配置为至少部分地基于在一系列视频图像中的第一图像之前的第二图像来修改第一图片的至少一部分。 例如，修改可以基于与前一图像相关联的编码噪声。 内部编码处理电路被配置为将修改的图像编码为I图像。

    2D block image encoding
    6.
    发明授权
    2D block image encoding 有权

    公开(公告)号：US10812829B2

    公开(公告)日：2020-10-20

    申请号：US14044599

    申请日：2013-10-02

    Applicant: Broadcom Corporation

    Inventor： Alexander Garland MacInnis

    IPC: H04N19/61

    Abstract: A coder (e.g., an encoder or decoder) implements coding of two dimensional blocks of image data using two dimensional differential pulse code modulation (2D DPCM). The coder may switch between DPCM and other types of coding, such as transform coding on a block by block basis. The 2D DPCM may obtain a reconstructed pixel within the two dimensional bloc and code a second, different, pixel within the two dimensional block using the reconstructed pixel. The coder may also create a bitstream of entropy encoded residuals that supports hybrid implicit/explicit specification of coding parameters.

    Hybrid transform-based compression
    7.
    发明授权
    Hybrid transform-based compression 有权

    公开(公告)号：US09813711B2

    公开(公告)日：2017-11-07

    申请号：US14302940

    申请日：2014-06-12

    Applicant: Broadcom Corporation

    Inventor： Alexander Garland MacInnis ,  Frederick George Walls

    IPC: H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/124 ,  H04N19/63 ,  H04N19/61 ,  H04N19/62 ,  H04N19/18

    CPC classification number: H04N19/124 ,  H04N19/18 ,  H04N19/61 ,  H04N19/62 ,  H04N19/63

    Abstract: A system implements a hybrid coding mode. The hybrid coding mode may implement a transform to decompose an input stream into frequency components. The frequency components may include frequency bands such as those resulting from a wavelet transform. The frequency components may have associated coefficients which may be determined via the transform. The hybrid coding mode may also implement a predictor-based coding mode. A predictor-based coding mode uses a set of values as predictors for another set of values. The hybrid mode may be implemented by using predictor-based coding to code a portion of the coefficients. For example, a coefficient may be used as a predictor for another coefficient of same frequency component. In some implementations, dynamic selection between a hybrid coding mode and a point coding mode may be used.

    Hybrid Transform-Based Compression
    9.
    发明申请
    Hybrid Transform-Based Compression 有权
    基于混合变换的压缩

    公开(公告)号：US20140294089A1

    公开(公告)日：2014-10-02

    申请号：US14302940

    申请日：2014-06-12

    Applicant: Broadcom Corporation

    Inventor： Alexander Garland MacInnis ,  Frederick George Walls

    IPC: H04N19/61 ,  H04N19/62 ,  H04N19/63

    CPC classification number: H04N19/124 ,  H04N19/18 ,  H04N19/61 ,  H04N19/62 ,  H04N19/63

    Abstract: A system implements a hybrid coding mode. The hybrid coding mode may implement a transform to decompose an input stream into frequency components. The frequency components may include frequency bands such as those resulting from a wavelet transform. The frequency components may have associated coefficients which may be determined via the transform. The hybrid coding mode may also implement a predictor-based coding mode. A predictor-based coding mode uses a set of values as predictors for another set of values. The hybrid mode may be implemented by using predictor-based coding to code a portion of the coefficients. For example, a coefficient may be used as a predictor for another coefficient of same frequency component. In some implementations, dynamic selection between a hybrid coding mode and a point coding mode may be used.

    Abstract translation: 系统实现混合编码模式。 混合编码模式可以实现将输入流分解为频率分量的变换。 频率分量可以包括诸如由小波变换产生的频带的频带。 频率分量可以具有可以经由变换确定的相关系数。 混合编码模式还可以实现基于预测器的编码模式。 基于预测器的编码模式使用一组值作为另一组值的预测器。 混合模式可以通过使用基于预测器的编码来对系数的一部分进行编码来实现。 例如，可以将系数用作相同频率分量的另一系数的预测器。 在一些实现中，可以使用混合编码模式和点编码模式之间的动态选择。

    Bounded Rate Near-Lossless And Lossless Image Compression
    10.
    发明申请
    Bounded Rate Near-Lossless And Lossless Image Compression 有权
    有限速率近无损和无损图像压缩

    公开(公告)号：US20140098857A1

    公开(公告)日：2014-04-10

    申请号：US14044627

    申请日：2013-10-02

    Applicant: Broadcom Corporation

    Inventor： Alexander Garland MacInnis ,  Frederick George Walls

    IPC: H04N7/26

    CPC classification number: H04N19/44 ,  H04N19/124 ,  H04N19/14 ,  H04N19/149 ,  H04N19/15 ,  H04N19/152 ,  H04N19/176 ,  H04N19/182 ,  H04N19/196 ,  H04N19/46

    Abstract: A system adjusts the quantization parameter used to encode an image sample (e.g., pixel component). The system accesses a quantization parameter for encoding a current image pixel from an implicit rate control and obtains a measure of another image sample within a particular distance from the sample. When the measure meets a predetermined criterion, the system adjusts the quantization parameter, encodes the pixel after adjusting the quantization parameter, and explicitly indicates the adjusting of the quantization parameter to a decoding system.

    Abstract translation: 系统调整用于编码图像样本（例如，像素分量）的量化参数。 该系统从隐式速率控制中访问用于对当前图像像素进行编码的量化参数，并且获得与样本特定距离内的另一图像样本的度量。 当测量满足预定标准时，系统调整量化参数，在调整量化参数之后对像素进行编码，并且明确地指示将量化参数调整到解码系统。

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