Optimized search for reference frames in predictive video coding system
    1.
    发明授权
    Optimized search for reference frames in predictive video coding system 有权
    在预测视频编码系统中优化参考帧的搜索

    公开(公告)号:US08989270B2

    公开(公告)日:2015-03-24

    申请号:US13397291

    申请日:2012-02-15

    摘要: A system and method for efficiently performing motion estimation during temporal prediction for coding. When a new frame is presented for coding, an encoder may identify a limited number of pixel blocks within the input frame that are complex. The encoder may perform motion estimation searches to find reference frame(s) that are adequate prediction references for the complex pixel blocks. The encoder may search for prediction references for the remaining pixel blocks of the new frame, confining the search to the reference frame(s) that were selected as prediction references of the complex pixel blocks.

    摘要翻译: 一种用于在编码的时间预测期间有效执行运动估计的系统和方法。 当提供用于编码的新帧时,编码器可以识别输入帧内有限数量的复杂的像素块。 编码器可以执行运动估计搜索以找到作为复数像素块的足够的预测参考的参考帧。 编码器可以搜索新帧的剩余像素块的预测参考,将搜索限制为被选为复数像素块的预测参考的参考帧。

    PREDICTIVE VIDEO CODER WITH LOW POWER REFERENCE PICTURE TRANSFORMATION
    2.
    发明申请
    PREDICTIVE VIDEO CODER WITH LOW POWER REFERENCE PICTURE TRANSFORMATION 有权
    具有低功率参考图像转换的预测视频编码器

    公开(公告)号:US20130329799A1

    公开(公告)日:2013-12-12

    申请号:US13755928

    申请日:2013-01-31

    IPC分类号: H04N7/26

    CPC分类号: H04N19/51 H04N19/503

    摘要: Video coders may perform perspective transformation of reference frames during coding in a manner that conserves processing resources. When a new input frame is available for coding, a camera position for the input frame may be estimated. A video coder may search for reference pictures having similar camera positions as the position of the input frame and, for each reference picture identified, the video coder may perform a prediction search to identify a reference picture that is the best prediction match for the input frame. Once the video coder identifies a reference picture to serve as a prediction source for the input frame, the video coder may derive a transform to match the reference frame data to the input frame data and may transform the reference picture accordingly. The video coder may code the input frame using the transformed reference picture as a prediction reference and may transmit coded frame data and the camera position of the input frame to a decoder. Thus, the video coder may perform derivation and execution of transforms on a limited basis which conserves system resources.

    摘要翻译: 视频编码器可以在编码期间以保存处理资源的方式执行参考帧的透视变换。 当新的输入帧可用于编码时,可以估计用于输入帧的摄像机位置。 视频编码器可以搜索具有与输入帧的位置相似的相机位置的参考图像,并且对于识别的每个参考图像,视频编码器可以执行预测搜索以识别作为输入帧的最佳预测匹配的参考图像 。 一旦视频编码器识别用作输入帧的预测源的参考图像,则视频编码器可以导出将参考帧数据与输入帧数据相匹配的变换,并且可以相应地变换参考图像。 视频编码器可以使用变换的参考图片作为预测参考来对输入帧进行编码,并且可以将编码的帧数据和输入帧的摄像机位置发送到解码器。 因此,视频编码器可以在有限的基础上进行变换的推导和执行,从而节省系统资源。

    Portable electronic device
    3.
    发明授权
    Portable electronic device 有权
    便携式电子设备

    公开(公告)号:US08385070B2

    公开(公告)日:2013-02-26

    申请号:US11414298

    申请日:2006-05-01

    IPC分类号: H05K7/20

    CPC分类号: G06F1/203 H04B1/036

    摘要: A portable electronic device comprises a housing, a circuit board, a heat-conduction structure and a heat-dissipation structure. The circuit board is disposed in the housing. The heat-conduction structure is disposed in the housing and contacts the circuit board. The heat-dissipation structure is disposed outside the housing and connected to the heat-conduction structure, wherein heat is transmitted from the circuit board, passing the heat-conduction structure and the heat-dissipation structure to be dissipated out of the housing.

    摘要翻译: 便携式电子设备包括外壳,电路板,导热结构和散热结构。 电路板设置在壳体中。 导热结构设置在壳体中并与电路板接触。 散热结构设置在壳体的外部并连接到热传导结构,其中热量从电路板传递,使热传导结构和散热结构通过外壳散开。

    VISUALLY MASKED METRIC FOR PIXEL BLOCK SIMILARITY
    4.
    发明申请
    VISUALLY MASKED METRIC FOR PIXEL BLOCK SIMILARITY 审中-公开
    用于像素块的可视化掩模公差

    公开(公告)号:US20120207212A1

    公开(公告)日:2012-08-16

    申请号:US13075282

    申请日:2011-03-30

    IPC分类号: H04N7/26

    摘要: Selecting a coding mode for coding video data by measuring a distortion sensitivity threshold for a pixel block, calculating a distortion threshold representative of the maximum distortion that may be effectively masked by the brightness and texture of the pixel block, estimating the distortion induced by coding the pixel block according to skip mode and coding the source pixel block with a predictive coding technique if the estimated distortion value exceeds the distortion threshold. The distortion sensitivity threshold may include, for example, a brightness value or a texture value. The contrast between the pixel block and the surrounding pixel blocks may also be considered such that if the contrast exceeds a contrast threshold calculated based on the measurement of brightness and texture, the source pixel block may be coded with a predictive coding technique even if the estimated distortion value does not exceed the distortion threshold.

    摘要翻译: 通过测量像素块的失真灵敏度阈值来选择用于编码视频数据的编码模式,计算代表由像素块的亮度和纹理有效地屏蔽的最大失真的失真阈值,估计由编码 像素块,并且如果估计的失真值超过失真阈值,则用预测编码技术对源像素块进行编码。 失真灵敏度阈值可以包括例如亮度值或纹理值。 还可以考虑像素块和周围像素块之间的对比度,使得如果对比度超过基于亮度和纹理的测量计算的对比阈值,则可以用预测编码技术对源像素块进行编码,即使估计 失真值不超过失真阈值。

    ADAPTIVE CONFIGURATION OF REFERENCE FRAME BUFFER BASED ON CAMERA AND BACKGROUND MOTION
    6.
    发明申请
    ADAPTIVE CONFIGURATION OF REFERENCE FRAME BUFFER BASED ON CAMERA AND BACKGROUND MOTION 有权
    基于相机和背景运动的参考框架缓冲器的自适应配置

    公开(公告)号:US20130003845A1

    公开(公告)日:2013-01-03

    申请号:US13175143

    申请日:2011-07-01

    IPC分类号: H04N7/32

    摘要: In a video coding/decoding system, reference picture caches in a video coder and decoder may be partitioned dynamically based on camera and background motion can lead to improved coding efficiency and coding quality. When a camera is fixed and therefore exhibits low motion, a system may allocate larger portions of the reference picture cache to storage of long term reference frames. In this case, foreground elements of an image (for example, a person) may move in front of a relatively fixed background. Increasing the number of long term reference frames can increase the chances that, no matter where the foreground elements are within a frame currently being coded, the reference picture cache will contain at least one frame that provides an adequate prediction match to background elements within the new frame. Thus the background elements uncovered in the current frame can be coded at high quality with a low number of bits. When a camera exhibits high motion, the system may allocate larger portions of the reference picture cache to storage of short term reference frames.

    摘要翻译: 在视频编码/解码系统中,视频编码器和解码器中的参考图像高速缓存可以基于相机进行动态分割,并且背景运动可以提高编码效率和编码质量。 当照相机固定并因此表现出低运动时,系统可以将较大部分的参考图像高速缓存分配给长期参考帧的存储。 在这种情况下,图像的前景元素(例如,人)可以在相对固定的背景之前移动。 增加长期参考帧的数量可以增加机会,无论前景元素在当前正被编码的帧内的何处,参考图像高速缓存将包含至少一个帧,其提供与新的背景元素内的足够的预测匹配 帧。 因此,当前帧中未覆盖的背景元素可以以低位数的高质量被编码。 当相机呈现高运动时,系统可以将较大部分的参考图像高速缓存分配给短期参考帧的存储。

    Portable electronic apparatus
    7.
    发明授权
    Portable electronic apparatus 有权
    便携式电子仪器

    公开(公告)号:US07778035B2

    公开(公告)日:2010-08-17

    申请号:US12370971

    申请日:2009-02-13

    IPC分类号: H05K7/20

    摘要: A portable electronic apparatus comprises a housing, a circuit board, a heat-conduction structure and a heat-dissipation structure. The circuit board is disposed in the housing and comprises a substrate and a first electronic device, wherein the first electronic device is disposed on the substrate. The heat-conduction structure is disposed on the circuit board, and dissipates heat from the first electronic device. The heat-dissipation structure is disposed on the housing and connected to the heat-conduction structure, wherein the heat passes the heat-conduction structure and the heat-dissipation structure, and is dissipated out of the housing.

    摘要翻译: 便携式电子设备包括外壳,电路板,导热结构和散热结构。 电路板设置在壳体中并且包括基板和第一电子装置,其中第一电子装置设置在基板上。 导热结构设置在电路板上,并从第一电子设备散热。 散热结构设置在壳体上并连接到热传导结构,其中热量通过导热结构和散热结构,并从外壳中散出。

    AUTHENTICATED MEDIA COMMUNICATION SYSTEM AND APPROACH
    8.
    发明申请
    AUTHENTICATED MEDIA COMMUNICATION SYSTEM AND APPROACH 审中-公开
    认证媒体通信系统与方法

    公开(公告)号:US20090055651A1

    公开(公告)日:2009-02-26

    申请号:US12196643

    申请日:2008-08-22

    IPC分类号: H04L9/00

    摘要: Media authentication is facilitated. In connection with an example embodiment, media is authenticated using an encoded projection of the media that is decoded using the media as an input. A condition of authenticity of the media is determined based upon an indication of distortion of the media characterized by a decoding of the encoded projection.

    摘要翻译: 媒体认证便利。 结合示例实施例,使用使用媒体作为输入解码的媒体的编码投影来对媒体进行认证。 基于通过编码投影的解码表征的媒体的失真的指示来确定媒体的真实性的条件。

    Portable electronic device
    9.
    发明申请

    公开(公告)号:US20060262500A1

    公开(公告)日:2006-11-23

    申请号:US11414298

    申请日:2006-05-01

    IPC分类号: G06F1/20

    CPC分类号: G06F1/203 H04B1/036

    摘要: A portable electronic device comprises a housing, a circuit board, a heat-conduction structure and a heat-dissipation structure. The circuit board is disposed in the housing. The heat-conduction structure is disposed in the housing and contacts the circuit board. The heat-dissipation structure is disposed outside the housing and connected to the heat-conduction structure, wherein heat is transmitted from the circuit board, passing the heat-conduction structure and the heat-dissipation structure to be dissipated out of the housing.

    DYNAMIC MODE SEARCH ORDER CONTROL FOR A VIDEO ENCODER
    10.
    发明申请
    DYNAMIC MODE SEARCH ORDER CONTROL FOR A VIDEO ENCODER 审中-公开
    视频编码器的动态模式搜索命令控制

    公开(公告)号:US20120195364A1

    公开(公告)日:2012-08-02

    申请号:US13018313

    申请日:2011-01-31

    IPC分类号: H04N7/26

    摘要: A system and method for coding video data wherein a coding mode decision process may be dynamically adjusted according to any of a plurality of factors including video image content, image complexity, motion, channel conditions, the status of the video system components, or other relevant factor. Each of a plurality of potential coding modes may be assigned a weight reflecting an estimation of the likelihood that the coding mode will result in quality image data. The coding mode decision process may then be altered by changing the order of coding modes attempted according to the assigned weight. Code removal and early termination may further alter the coding mode decision process.

    摘要翻译: 一种用于对视频数据进行编码的系统和方法,其中编码模式决定过程可以根据包括视频图像内容,图像复杂度,运动,信道条件,视频系统组件的状态或其他相关的多个因素中的任一个来动态地调整 因子。 可以为多个潜在编码模式中的每一个分配反映编码模式将导致质量图像数据的似然性的估计的权重。 然后可以通过根据分配的权重改变尝试的编码模式的顺序来改变编码模式决定过程。 代码删除和提前终止可能进一步改变编码模式决策过程。