System and method for processing image data using an image processing pipeline of an image signal processor
    81.
    发明授权
    System and method for processing image data using an image processing pipeline of an image signal processor 有权
    使用图像信号处理器的图像处理流水线处理图像数据的系统和方法

    公开(公告)号:US08358319B2

    公开(公告)日:2013-01-22

    申请号:US12789815

    申请日:2010-05-28

    IPC分类号: G09G5/00

    摘要: Various techniques are provided herein for processing raw image data acquired using a digital image sensor in an image processing pipeline of an image signal processing system. In one embodiment, the image processing pipeline may first process the raw image data (e.g., Bayer image data) for the detection and correction of defective pixels. Next, the image processing pipeline may process the raw image data to reduce noise. Thereafter, the image processing pipeline may correct lens shading distortion in the raw image data and, subsequently, apply a demosaicing algorithm to convert the raw image data into full color image data (e.g., RGB image data). The color image data may be further processed by the image processing pipeline to correct color and gamma properties prior to being converted into a luma and chroma color space (e.g., YCbCr color space).

    摘要翻译: 本文提供了用于处理在图像信号处理系统的图像处理流水线中使用数字图像传感器获取的原始图像数据的各种技术。 在一个实施例中,图像处理流水线可以首先处理原始图像数据(例如,拜耳图像数据)以用于缺陷像素的检测和校正。 接下来,图像处理流水线可以处理原始图像数据以降低噪声。 此后,图像处理流水线可以校正原始图像数据中的透镜遮蔽失真,并且随后应用去马赛克算法将原始图像数据转换为全色图像数据(例如,RGB图像数据)。 彩色图像数据可以由图像处理流水线进一步处理,以在被转换为亮度和色度色彩空间(例如,YCbCr颜色空间)之前校正颜色和伽马性质。

    METHOD AND APPARATUS FOR H.264 TO MPEG-2 VIDEO TRANSCODING
    82.
    发明申请
    METHOD AND APPARATUS FOR H.264 TO MPEG-2 VIDEO TRANSCODING 有权
    H.264到MPEG-2视频传输的方法和装置

    公开(公告)号:US20120147952A1

    公开(公告)日:2012-06-14

    申请号:US13400208

    申请日:2012-02-20

    IPC分类号: H04N7/26

    摘要: A method for transcoding from an H.264 format to an MPEG-2 format is disclosed. The method generally comprises the steps of (A) decoding an input video stream in the H.264 format to generate a picture having a plurality of macroblock pairs that used an H.264 macroblock adaptive field/frame coding; (B) determining a mode indicator for each of the macroblock pairs; and (C) coding the macroblock pairs into an output video stream in the MPEG-2 format using one of (i) an MPEG-2 field mode coding and (ii) an MPEG-2 frame mode coding as determined from the mode indicators.

    摘要翻译: 公开了一种从H.264格式转换为MPEG-2格式的方法。 该方法通常包括以下步骤:(A)以H.264格式解码输入视频流,以产生具有使用H.264宏块自适应字段/帧编码的多个宏块对的图像; (B)确定每个宏块对的模式指示符; 以及(C)使用MPEG-2场模式编码和(ii)从模式指示符确定的MPEG-2帧模式编码之一,将宏块对编码为MPEG-2格式的输出视频流。

    Method and apparatus for MPEG-2 to H.264 video transcoding
    83.
    发明授权
    Method and apparatus for MPEG-2 to H.264 video transcoding 有权
    用于MPEG-2至H.264视频转码的方法和装置

    公开(公告)号:US08155194B2

    公开(公告)日:2012-04-10

    申请号:US11198456

    申请日:2005-08-05

    IPC分类号: H04B1/66

    摘要: A method for transcoding from an MPEG-2 format to an H.264 format is disclosed. The method generally comprises the steps of (A) decoding an input video stream in the MPEG-2 format to generate a plurality of macroblocks; (B) determining a plurality of indicators from a pair of the macroblocks, the pair of the macroblocks being vertically adjoining; and (C) coding the pair of the macroblocks into an output video stream in the H.264 format using one of (i) a field mode coding and (ii) a frame mode coding as determined from the indicators.

    摘要翻译: 公开了一种从MPEG-2格式转码为H.264格式的方法。 该方法通常包括以下步骤:(A)以MPEG-2格式解码输入视频流以产生多个宏块; (B)从一对宏块中确定多个指示符,所述一对宏块垂直相邻; 以及(C)使用(i)场模式编码和(ii)从指标确定的帧模式编码中的一个,将该对宏块编码为H.264格式的输出视频流。

    Performance adaptive video encoding with concurrent decoding
    84.
    发明授权
    Performance adaptive video encoding with concurrent decoding 有权
    性能自适应视频编码与并发解码

    公开(公告)号:US08031766B2

    公开(公告)日:2011-10-04

    申请号:US11195053

    申请日:2005-08-02

    申请人: Guy Cote

    发明人: Guy Cote

    IPC分类号: H04N7/12 H04N11/02

    摘要: An encoder circuit, a task scheduler circuit and a decoder circuit. The encoder circuit may be configured to (i) generate one or more first status signals in response to one or more report signals and (ii) perform video encoding tasks based on available central processing unit (CPU) cycles and memory bandwidth. The task scheduler circuit may be configured to (i) generate a control signal and the one or more report signals in response to the one or more first status signals. The decoder circuit may be configured to (i) generate one or more second status signals and (ii) perform concurrent decoding while the encoder circuit performs adaptive video encoding tasks in response to the control signal.

    摘要翻译: 编码器电路,任务调度器电路和解码器电路。 编码器电路可以被配置为:(i)响应于一个或多个报告信号产生一个或多个第一状态信号,以及(ii)基于可用的中央处理单元(CPU)周期和存储器带宽执行视频编码任务。 任务调度器电路可以被配置为(i)响应于一个或多个第一状态信号而产生控制信号和一个或多个报告信号。 解码器电路可以被配置为(i)产生一个或多个第二状态信号,并且(ii)在编码器电路响应于控制信号执行自适应视频编码任务时执行并行解码。

    Method for coefficient bitdepth limitation, encoder and bitstream generation apparatus
    86.
    发明授权
    Method for coefficient bitdepth limitation, encoder and bitstream generation apparatus 有权
    系数位差限制方法,编码器和比特流生成装置

    公开(公告)号:US07949044B2

    公开(公告)日:2011-05-24

    申请号:US11104070

    申请日:2005-04-12

    IPC分类号: H04N11/04 G06K9/36

    摘要: A method for coefficient bitdepth limitation in an encoder and/or bitstream generation apparatus including the steps of (A) generating one or more residual block coefficients in response to a video signal and one or more coding parameters and (B) manipulating the one or more coding parameters such that the one or more residual block coefficients are prevented from having values greater than a bitdepth of the video signal plus a predefined number of bits.

    摘要翻译: 一种编码器和/或比特流生成装置中的系数位差限制的方法,包括以下步骤:(A)响应于视频信号和一个或多个编码参数产生一个或多个残余块系数,以及(B)操纵所述一个或多个 编码参数使得一个或多个残余块系数被阻止具有大于视频信号的位差加上预定位数的位的值。

    Method and apparatus for image decoder post-processing using image pre-processing and image encoding information
    87.
    发明授权
    Method and apparatus for image decoder post-processing using image pre-processing and image encoding information 有权
    用于使用图像预处理和图像编码信息的图像解码器后处理的方法和装置

    公开(公告)号:US07684626B1

    公开(公告)日:2010-03-23

    申请号:US11292199

    申请日:2005-12-01

    摘要: A method for image decoding is disclosed. The method generally includes the steps of (A) receiving from a medium (1) an encoded signal and (2) transform data comprising at least one of (i) encoding statistics embedded in the encoded signal, (ii) encoding information and (iii) pre-processing information, wherein (a) the encoding statistics are created by an encoder in encoding an intermediate input signal to create the encoded signal, (b) the encoding information is producible by the encoder in the encoding and (c) the pre-processing information is producible by a pre-processor in converting an image input signal into the intermediate input signal, (B) generating an intermediate output signal by decoding the encoded signal and (C) generating an image output signal by processing the intermediate output signal in response to the transform data.

    摘要翻译: 公开了一种用于图像解码的方法。 该方法通常包括以下步骤:(A)从介质(1)接收编码信号;(2)转换数据,其包括以下至少一个:(i)编码嵌入在编码信号中的统计信息,(ii)编码信息和(iii 其中(a)由编码器在对中间输入信号进行编码以产生编码信号时产生编码统计量,(b)编码信息由编码器在编码中产生,(c)预编码信息 处理信息可由预处理器将图像输入信号转换成中间输入信号,(B)通过解码编码信号产生中间输出信号,(C)通过处理中间输出信号产生图像输出信号 响应于变换数据。

    PROGRAMMABLE QUANTIZATION DEAD ZONE AND THRESHOLD FOR STANDARD-BASED H.264 AND/OR VC1 VIDEO ENCODING
    88.
    发明申请
    PROGRAMMABLE QUANTIZATION DEAD ZONE AND THRESHOLD FOR STANDARD-BASED H.264 AND/OR VC1 VIDEO ENCODING 审中-公开
    可编程定量死区和基于标准的H.264和/或VC1视频编码的阈值

    公开(公告)号:US20100061449A1

    公开(公告)日:2010-03-11

    申请号:US12568878

    申请日:2009-09-29

    IPC分类号: H04N7/26

    摘要: A video encoder including an encoder circuit, a quantizer circuit and a control circuit. The encoder circuit may be configured to generate a plurality of coefficient values and motion vectors in response to a video stream, a first control signal, a second control signal, and a number of quantized values. The control circuit may be configured to (i) generate the first control signal, the second control signal, and a quantizer index signal and (ii) set two or more quantization dead zones and two or more offsets to different values, where the quantization dead zones and the offsets are independently programmable. The quantizer circuit may be configured to generate the number of quantized values in response to the coefficient values, the quantizer index signal, the two or more quantization dead zones and the two or more offsets. A first coefficient value may be quantized using a first quantization dead zone and a first offset. A second coefficient value may be quantized using a second quantization dead zone and a second offset. The first and second quantization dead zones generally have different values. The first and second offsets generally have different values. Quantization calculations determining each quantized value take into account respective quantization dead zones and offsets.

    摘要翻译: 一种视频编码器,包括编码器电路,量化器电路和控制电路。 编码器电路可以被配置为响应于视频流,第一控制信号,第二控制信号和多个量化值而产生多个系数值和运动矢量。 控制电路可以被配置为:(i)产生第一控制信号,第二控制信号和量化器索引信号,以及(ii)将两个或多个量化死区和两个或更多个偏移设置为不同的值,其中量化死区 区域和偏移量是独立可编程的。 量化器电路可以被配置为响应于系数值,量化器索引信号,两个或更多个量化死区和两个或更多个偏移量来生成量化值的数量。 可以使用第一量化死区和第一偏移来量化第一系数值。 可以使用第二量化死区和第二偏移来量化第二系数值。 第一和第二量化死区通常具有不同的值。 第一和第二偏移量通常具有不同的值。 确定每个量化值的量化计算考虑了相应的量化死区和偏移量。

    METHOD AND APPARATUS FOR VIDEO DEINTERLACING AND FORMAT CONVERSION
    89.
    发明申请
    METHOD AND APPARATUS FOR VIDEO DEINTERLACING AND FORMAT CONVERSION 有权
    用于视频去除和格式转换的方法和装置

    公开(公告)号:US20080122975A1

    公开(公告)日:2008-05-29

    申请号:US12025233

    申请日:2008-02-04

    IPC分类号: H04N7/01

    CPC分类号: H04N7/012

    摘要: A method for deinterlacing a picture is disclosed. The method generally includes the steps of (A) calculating a potential sample at a location interfaced with a first field of the picture by temporal filtering, (B) evaluating a protection condition in a current region around the location after inclusion of the potential sample and (C) calculating an interpolated sample at the location by vertical spatial filtering the first field in response to the protection condition indicating a significant increase in a vertical activity within the current region due to the potential sample.

    摘要翻译: 公开了一种用于去隔行扫描图像的方法。 该方法通常包括以下步骤:(A)通过时间滤波在与图像的第一场接口的位置处计算潜在样本;(B)评估在包含潜在样本之后的位置周围的当前区域中的保护条件;以及 (C)响应于指示由于潜在样本导致的当前区域内的垂直活动的显着增加的保护条件,通过对第一场进行垂直空间滤波来计算位置处的插值样本。