SYSTEM AND METHOD FOR DETECTING AND CORRECTING DEFECTIVE PIXELS IN AN IMAGE SENSOR
    31.
    发明申请
    SYSTEM AND METHOD FOR DETECTING AND CORRECTING DEFECTIVE PIXELS IN AN IMAGE SENSOR 有权
    用于检测和校正图像传感器中的有缺陷像素的系统和方法

    公开(公告)号:US20110090371A1

    公开(公告)日:2011-04-21

    申请号:US12582400

    申请日:2009-10-20

    IPC分类号: H04N9/68 H04N9/64

    摘要: Various techniques are provided for the detection and correction of defective pixels in an image sensor. In accordance with one embodiment, a static defect table storing the locations of known static defects is provided, and the location of a current pixel is compared to the static defect table. If the location of the current pixel is found in the static defect table, the current pixel is identified as a static defect and is corrected using the value of the previous pixel of the same color. If the current pixel is not identified as a static defect, a dynamic defect detection process includes comparing pixel-to-pixel gradients between the current pixel a set of neighboring pixels against a dynamic defect threshold. If a dynamic defect is detected, a replacement value for correcting the dynamic defect may be determined by interpolating the value of two neighboring pixels on opposite sides of the current pixel in a direction exhibiting the smallest gradient.

    摘要翻译: 提供了用于图像传感器中的缺陷像素的检测和校正的各种技术。 根据一个实施例,提供存储已知静态缺陷的位置的静态缺陷表,并将当前像素的位置与静态缺陷表进行比较。 如果在静态缺陷表中找到当前像素的位置,则将当前像素识别为静态缺陷,并使用相同颜色的先前像素的值进行校正。 如果当前像素未被识别为静态缺陷,则动态缺陷检测处理包括将当前像素与一组相邻像素之间的像素与像素梯度与动态缺陷阈值进行比较。 如果检测到动态缺陷,则可以通过在呈现最小梯度的方向上内插当前像素的相对侧上的两个相邻像素的值来确定用于校正动态缺陷的替换值。

    Method and apparatus for VC-1 to MPEG-2 video transcoding
    32.
    发明授权
    Method and apparatus for VC-1 to MPEG-2 video transcoding 有权
    用于VC-1到MPEG-2视频转码的方法和装置

    公开(公告)号:US07903739B2

    公开(公告)日:2011-03-08

    申请号:US11198448

    申请日:2005-08-05

    IPC分类号: H04B1/66

    摘要: A method for transcoding from a VC-1 format to an MPEG-2 format is disclosed. The method generally comprises the steps of (A) decoding an input video stream in the VC-1 format to generate a picture; (B) determining a first mode indicator for the picture; and (C) coding the picture 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 first mode indicator.

    摘要翻译: 公开了一种从VC-1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VC-1格式解码输入视频流以产生图像; (B)确定图像的第一模式指示符; 以及(C)使用(i)从第一模式指示符确定的MPEG-2场模式编码和(ii)MPEG-2帧模式编码之一,将图像编码为MPEG-2格式的输出视频流。

    Method for video deinterlacing and format conversion
    33.
    发明授权
    Method for video deinterlacing and format conversion 有权
    视频去隔行和格式转换的方法

    公开(公告)号:US07893993B2

    公开(公告)日:2011-02-22

    申请号:US12018544

    申请日:2008-01-23

    摘要: A method for deinterlacing a picture is disclosed. The method generally includes the steps of (A) generating a plurality of primary scores by searching along a plurality of primary angles for an edge in the picture proximate a location interlaced with a field of the picture, (B) generating a plurality of neighbor scores by searching for the edge along a plurality of neighbor angles proximate a particular angle of the primary angles corresponding to a particular score of the primary scores having a best value and (C) identifying a best score from a group of scores consisting of the particular score and the neighbor scores to generate an interpolated sample at the location.

    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)通过沿图像中的边缘邻近的图像的边缘沿多个主角度搜索生成多个主分数,(B)生成多个相邻分数 通过搜索沿着与具有最佳值的主分数的特定分数相对应的主角度的特定角度的多个相邻角度的边缘,以及(C)从由特定分数组成的分数组中识别最佳分数 和邻居得分,以在该位置生成内插样本。

    Systems and methods for RGB image processing
    34.
    发明授权
    Systems and methods for RGB image processing 有权
    RGB图像处理系统和方法

    公开(公告)号:US09332239B2

    公开(公告)日:2016-05-03

    申请号:US13484814

    申请日:2012-05-31

    摘要: Systems and methods for processing image data in RGB format are provided. In one example, an electronic device includes memory to store image data in raw or RGB format, or both, and an RGB image processing pipeline to process the image data. Specifically, the RGB image processing pipeline may process the image data regardless of whether the image data is of raw or RGB format. The RGB image processing pipeline may include receiving logic to receive the image data in raw or RGB format and demosaicing logic to, when the receiving logic receives the image data in raw format, convert the image data into RGB format. The logic may include local tone mapping logic configured to apply spatially varying tone curves to the image data, a color correction matrix configured to correct color in the image data, and gamma logic configured to transform the image data into gamma space.

    摘要翻译: 提供了以RGB格式处理图像数据的系统和方法。 在一个示例中,电子设备包括用于以原始或RGB格式或两者存储图像数据的存储器和用于处理图像数据的RGB图像处理流水线。 具体而言,RGB图像处理流水线可以处理图像数据,而不管图像数据是原始还是RGB格式。 RGB图像处理流水线可以包括接收逻辑以接收原始或RGB格式的图像数据和去马赛克逻辑,当接收逻辑以原始格式接收图像数据时,将图像数据转换为RGB格式。 逻辑可以包括被配置为将空间变化的色调曲线应用于图像数据的本地色调映射逻辑,配置为校正图像数据中的颜色的色彩校正矩阵,以及被配置为将图像数据变换为伽马空间的伽马逻辑。

    Method and apparatus for QP modulation based on perceptual models for picture encoding
    35.
    发明授权
    Method and apparatus for QP modulation based on perceptual models for picture encoding 有权
    基于图像编码的感知模型的QP调制方法和装置

    公开(公告)号:US09282336B2

    公开(公告)日:2016-03-08

    申请号:US13419294

    申请日:2012-03-13

    申请人: Guy Cote

    发明人: Guy Cote

    摘要: A method for encoding a picture is disclosed. The method generally includes the steps of (A) generating at least one respective macroblock statistic from each of a plurality of macroblocks in the picture, (B) generating at least one global statistic from the picture and (C) generating a respective macroblock quantization parameter for each of the macroblocks based on both (i) the at least one respective macroblock statistic and (ii) said at least one global statistic.

    摘要翻译: 公开了一种图像编码方法。 该方法通常包括以下步骤:(A)从图像中的多个宏块中的每一个生成至少一个相应的宏块统计量,(B)从图像生成至少一个全局统计量,(C)生成相应的宏块量化参数 基于(i)至少一个相应的宏块统计量和(ii)所述至少一个全局统计量,对于每个宏块。

    Video bitstream transcoding method and apparatus
    36.
    发明授权
    Video bitstream transcoding method and apparatus 有权
    视频比特流代码转换方法和装置

    公开(公告)号:US08817876B2

    公开(公告)日:2014-08-26

    申请号:US13477314

    申请日:2012-05-22

    申请人: Guy Cote

    发明人: Guy Cote

    IPC分类号: H04N7/12 H04N7/50 H04N7/26

    摘要: A video transcoder is disclosed. The video transcoder generally comprises a processor and a video digital signal processor. The processor may be formed on a first die. The video digital signal processor may be formed on a second die and coupled to the processor. The video digital signal processor may have (i) a first module configured to perform a first operation in decoding an input video stream in a first format and (ii) a second module configured to perform a second operation in coding an output video stream in a second format, wherein the first operation and the second operation are performed in parallel.

    摘要翻译: 公开了视频代码转换器。 视频代码转换器通常包括处理器和视频数字信号处理器。 处理器可以形成在第一管芯上。 视频数字信号处理器可以形成在第二裸片上并耦合到处理器。 视频数字信号处理器可以具有(i)第一模块,其被配置为执行以第一格式对输入视频流进行解码的第一操作,以及(ii)被配置为执行第二操作以对输出视频流进行编码的第二模式 第二格式,其中并行执行第一操作和第二操作。

    Method and apparatus for H.264 to MPEG-2 video transcoding
    37.
    发明授权
    Method and apparatus for H.264 to MPEG-2 video transcoding 有权
    用于H.264到MPEG-2视频转码的方法和装置

    公开(公告)号:US08798155B2

    公开(公告)日:2014-08-05

    申请号:US13400208

    申请日:2012-02-20

    IPC分类号: H04N7/12

    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。

    System and method for demosaicing image data using weighted gradients
    38.
    发明授权
    System and method for demosaicing image data using weighted gradients 有权
    使用加权梯度对图像数据进行去马赛克的系统和方法

    公开(公告)号:US08638342B2

    公开(公告)日:2014-01-28

    申请号:US12582414

    申请日:2009-10-20

    IPC分类号: G09G5/00

    摘要: Various techniques are provided herein for the demosaicing of images acquired and processed by an imaging system. The imaging system includes an image signal processor and image sensors utilizing color filter arrays (CFA) for acquiring red, green, and blue color data using one pixel array. In one embodiment, the CFA may include a Bayer pattern. During image signal processing, demosaicing may be applied to interpolate missing color samples from the raw image pattern. In one embodiment, interpolation for the green color channel may include employing edge-adaptive filters with weighted gradients of horizontal and vertical filtered values. The red and blue color channels may be interpolated using color difference samples with co-located interpolated values of the green color channel. In another embodiment, interpolation of the red and blue color channels may be performed using color ratios (e.g., versus color difference data).

    摘要翻译: 本文提供了用于对由成像系统获取和处理的图像进行去马赛克的各种技术。 成像系统包括图像信号处理器和利用彩色滤光片阵列(CFA)的图像传感器,用于使用一个像素阵列获取红,绿和蓝色数据。 在一个实施例中,CFA可以包括拜耳模式。 在图像信号处理期间,可以应用去马赛克来从原始图像图案插值丢失的颜色样本。 在一个实施例中,绿色通道的插值可以包括采用具有水平和垂直滤波值的加权梯度的边缘自适应滤波器。 可以使用具有绿色通道的相同位置的内插值的色差样本来内插红色和蓝色色彩通道。 在另一个实施例中,可以使用颜色比(例如,与色差数据)来执行红色和蓝色色彩通道的插值。

    SYSTEMS AND METHODS FOR YCC IMAGE PROCESSING
    39.
    发明申请
    SYSTEMS AND METHODS FOR YCC IMAGE PROCESSING 有权
    YCC图像处理系统与方法

    公开(公告)号:US20130322746A1

    公开(公告)日:2013-12-05

    申请号:US13484926

    申请日:2012-05-31

    IPC分类号: G06K9/40

    CPC分类号: G06T1/20 G06T3/4015

    摘要: Systems and methods for processing YCC image data provided. In one example, an electronic device includes memory to store image data in RGB or YCC format and a YCC image processing pipeline to process the image data. The YCC image processing pipeline may include receiving logic configured to receive the image data in RGB or YCC format and color space conversion logic configured to, when the image data is received in RGB format, convert the image data into YCC format. The YCC image processing logic may also include luma sharpening and chroma suppression logic; brightness, contrast, and color adjustment logic; gamma logic; chroma decimation logic; scaling logic; and chromanoise reduction logic.

    摘要翻译: 用于处理提供的YCC图像数据的系统和方法。 在一个示例中,电子设备包括以RGB或YCC格式存储图像数据的存储器和用于处理图像数据的YCC图像处理流水线。 YCC图像处理流水线可以包括被配置为接收RGB或YCC格式的图像数据的接收逻辑,以及配置为当以RGB格式接收图像数据时将图像数据转换为YCC格式的颜色空间转换逻辑。 YCC图像处理逻辑还可以包括亮度锐化和色度抑制逻辑; 亮度,对比度和颜色调整逻辑; 伽玛逻辑; 色度抽取逻辑; 缩放逻辑; 和色度降低逻辑。

    Local Image Statistics Collection
    40.
    发明申请
    Local Image Statistics Collection 有权
    本地图像统计信息收集

    公开(公告)号:US20130322745A1

    公开(公告)日:2013-12-05

    申请号:US13484741

    申请日:2012-05-31

    IPC分类号: G06K9/36

    摘要: Systems and methods for generating local image statistics are provided. In one example, an image signal processing system may include a statistics pipeline with image processing logic and local image statistics collection logic. The image processing logic may receive and process pixels of raw image data. The local image statistics collection logic may generate a local histogram associated with a luminance of the pixels of a first block of pixels of the raw image data or a thumbnail in which a pixel of the thumbnail represents a downscaled version of the luminance of the pixels of the first block of the pixel. The raw image data may include many other blocks of pixels of the same size as the first block of pixels.

    摘要翻译: 提供了生成本地图像统计信息的系统和方法。 在一个示例中,图像信号处理系统可以包括具有图像处理逻辑和本地图像统计信息收集逻辑的统计流水线。 图像处理逻辑可以接收和处理原始图像数据的像素。 本地图像统计收集逻辑可以生成与原始图像数据的第一像素块的像素的亮度相关联的局部直方图或缩略图,其中缩略图的像素表示缩略图的像素的亮度 像素的第一个块。 原始图像数据可以包括与第一像素块相同尺寸的许多其他像素块。