Kalman tracking of color objects
    81.
    发明授权
    Kalman tracking of color objects 失效
    卡尔曼跟踪颜色对象

    公开(公告)号:US06917692B1

    公开(公告)日:2005-07-12

    申请号:US09318682

    申请日:1999-05-25

    IPC分类号: G06K9/00 G06T7/20

    CPC分类号: G06K9/32 G06T7/277

    摘要: A semi-automatic method of tracking color objects in a video image sequence starts by separating the objects on the basis of color and identifying an object of interest to track. A Kalman predictive algotithm in used to predict the position of the centroid of the object of interest through successive frames. From the predicted position the actual centroid is measured and the position and velocity are smoothed using a Kalman filter. Error recovery is provided in the event the centroid falls outside the field of view or falls into an area of a different color, or in the event the tracking algorithm breaks down.

    摘要翻译: 在视频图像序列中跟踪颜色对象的半自动方法通过基于颜色分离对象并识别要跟踪的感兴趣对象来开始。 卡尔曼预测算法用于通过连续帧预测感兴趣对象的质心的位置。 从预测位置,使用卡尔曼滤波器测量实际质心并使位置和速度平滑。 如果重心落在视野之外或落入不同颜色的区域,或者跟踪算法发生故障的情况下,则会提供错误恢复。

    Process to extract regions of homogeneous texture in a digital picture
    82.
    发明授权
    Process to extract regions of homogeneous texture in a digital picture 失效
    在数字图片中提取均质纹理区域的过程

    公开(公告)号:US06693962B1

    公开(公告)日:2004-02-17

    申请号:US09495189

    申请日:2000-02-01

    IPC分类号: H04N718

    摘要: A method of extracting regions of homogeneous texture in a digital picture divides the digital picture into blocks, and for each block generates a feature vector as a function of the data moments. From the feature vectors a gradient for each block is extracted in one of two ways, either using a weighted Euclidean distance between the feature vectors or a probability mass function-based distance metric. The gradients are submitted to morphological preprocessing to remove small bumps in the gradient field. A watershed algorithm is then applied to the preprocessed gradient field to segment the gradient field into a set of spatially connected regions of homogeneous texture.

    摘要翻译: 一种在数字图像中提取均匀纹理区域的方法将数字图像划分为块,并且对于每个块,根据数据时刻生成特征向量。 从特征向量中,以两种方式之一提取每个块的梯度,使用特征向量之间的加权欧几里德距离或基于概率质量函数的距离度量。 梯度被提交到形态预处理以去除梯度场中的小凸起。 然后将分水岭算法应用于预处理梯度场,以将梯度场分割成一组均匀纹理的空间连接区域。

    Method and apparatus for organizing data pertaining to audiovisual content
    83.
    发明授权
    Method and apparatus for organizing data pertaining to audiovisual content 失效
    用于组织有关视听内容的数据的方法和装置

    公开(公告)号:US06675158B1

    公开(公告)日:2004-01-06

    申请号:US09708257

    申请日:2000-11-07

    IPC分类号: G06F1730

    摘要: A method and apparatus for organizing data pertaining to audiovisual content are described. According to one embodiment, an exemplary method for organizing data pertaining to audiovisual content includes defining at least one descriptive list for a descriptive portion of the data pertaining to audiovisual content, defining at least one accessing list for an accessing portion of the data pertaining to audiovisual content, and generating a matrix that connects the accessing list to the descriptive list.

    摘要翻译: 描述用于组织与视听内容有关的数据的方法和装置。 根据一个实施例,用于组织与视听内容相关的数据的示例性方法包括为与视听内容相关的数据的描述部分定义至少一个描述列表,为视听内容的数据的访问部分定义至少一个访问列表 内容,并生成将访问列表连接到描述性列表的矩阵。

    Bit rate control mechanism for digital image and video data compression
    84.
    发明授权
    Bit rate control mechanism for digital image and video data compression 失效
    用于数字图像和视频数据压缩的比特率控制机制

    公开(公告)号:US5995151A

    公开(公告)日:1999-11-30

    申请号:US932681

    申请日:1997-09-18

    摘要: A bit rate control mechanism for a digital image or video compression system estimates a complexity parameter for a current picture, or block of samples, of a video signal as a function of parameters for a prior picture of the video signal, which parameters include a bit rate. From the complexity parameter a quality factor for the current picture is determined and applied to a quantizer to compress the current picture. A complexity pre-processor may also be used to detect scene changes in the video signal prior to estimating the complexity parameter. If there is a scene change detected, then the rate control mechanism is reset prior to estimating the complexity parameter for the first picture in the new scene. Also a video buffer verifier is controlled so that the buffer occupancy at the end of a specified image sequence is at a target value so that looping and editing applications are facilitated.

    摘要翻译: 用于数字图像或视频压缩系统的比特率控制机构估计作为视频信号的先前图像的参数的视频信号的当前图像或采样块的复杂度参数,哪些参数包括位 率。 根据复杂度参数确定当前图像的质量因子并将其应用于量化器以压缩当前图像。 在估计复杂度参数之前,还可以使用复杂度预处理器来检测视频信号中的场景变化。 如果检测到场景变化,则在估计新场景中的第一画面的复杂度参数之前,速率控制机构被重置。 还控制视频缓冲器验证器,使得指定图像序列末尾的缓冲器占用是目标值,从而便于循环和编辑应用。

    High-speed/high-slew-rate tri-modal all bipolar buffer/switch and method
thereof
    85.
    发明授权
    High-speed/high-slew-rate tri-modal all bipolar buffer/switch and method thereof 失效
    高速/高压摆率三态全双极型缓冲器/开关及其方法

    公开(公告)号:US5892376A

    公开(公告)日:1999-04-06

    申请号:US916724

    申请日:1997-08-18

    CPC分类号: H03K17/04213 H03K17/06

    摘要: A high-speed/high-slew-rate tri-modal all bipolar buffer/switch includes a unity-gain amplifier, a voltage source, and a maximum level detector and a minimum level detector adjusting a current source to sink or source current as required to quickly make the output voltage of the switch equal to the input voltage of the switch. The maximum level detector and the minimum level detector compare the output voltage to the input voltage. If the output voltage does not equal the input voltage, the current source acts as either a sink or source to make the output voltage equal the input voltage. In addition, the voltage switch holds a constant d.c. voltage at the output of the switch when the switch is powered down.

    摘要翻译: 高速/高压摆率三态全双极型缓冲器/开关包括单位增益放大器,电压源和最大电平检测器以及最小电平检测器,根据需要调整电流源吸收或源电流 快速使开关的输出电压等于开关的输入电压。 最大电平检测器和最小电平检测器将输出电压与输入电压进行比较。 如果输出电压不等于输入电压,则电流源作为接收端或源极使输出电压等于输入电压。 此外,电压开关保持恒定的直流电压。 当开关断电时,开关输出端的电压。

    Video system with quantization matrix coding mechanism and method of operation thereof
    87.
    发明授权
    Video system with quantization matrix coding mechanism and method of operation thereof 有权
    具有量化矩阵编码机制的视频系统及其操作方法

    公开(公告)号:US08982948B2

    公开(公告)日:2015-03-17

    申请号:US13333064

    申请日:2011-12-21

    IPC分类号: H04N7/12 H04N11/02 H04N11/04

    CPC分类号: H04N19/463

    摘要: A method of operation of a video system includes: generating a quantization matrix for a video input data, the quantization matrix having a corner seed and a right-bottom sub-quad coefficient estimated based on the corner seed; generating a video bitstream based on the quantization matrix; and generating a reconstructed video data with the video bitstream for displaying on a video device.

    摘要翻译: 视频系统的操作方法包括:产生用于视频输入数据的量化矩阵,所述量化矩阵具有基于角落种子估计的角落种子和右下亚四倍系数; 基于量化矩阵生成视频比特流; 以及用视频比特流生成重构的视频数据,以在视频设备上显示。

    COEFFICIENT CODING HARMONIZATION IN HEVC
    88.
    发明申请
    COEFFICIENT CODING HARMONIZATION IN HEVC 有权
    HEVC中的系统编码协调

    公开(公告)号:US20130188710A1

    公开(公告)日:2013-07-25

    申请号:US13631464

    申请日:2012-09-28

    申请人: Jun Xu Ali Tabatabai

    发明人: Jun Xu Ali Tabatabai

    IPC分类号: H04N7/50 H04N7/30

    摘要: Coefficient coding for transform units (TUs) during high efficiency video coding (HEVC), and similar standards, toward simplifying design while enhancing efficiency. Elements of the invention include coefficient coding for TUs with up-right diagonal scans being modified, and selectively applying multi-level significance map coding.

    摘要翻译: 高效率视频编码(HEVC)中的变换单元(TU)的系数编码以及类似的标准,以简化设计,同时提高效率。 本发明的要素包括:修改右上对角线扫描的TU的系数编码,以及选择性地应用多级重要性映射编码。

    Image compression utilizing ring-tree entropy coding and directional transforms
    89.
    发明授权
    Image compression utilizing ring-tree entropy coding and directional transforms 失效
    利用环树熵编码和方向变换的图像压缩

    公开(公告)号:US08396305B2

    公开(公告)日:2013-03-12

    申请号:US12833831

    申请日:2010-07-09

    IPC分类号: G06K9/36

    CPC分类号: H04N19/647

    摘要: Image encoding for changing representation of zero coefficient clustering and for utilizing a novel directional transform for exploiting the directional properties of image energy. The apparatus and methods can be applied to numerous applications, such as within image codecs. A ring-tree method is taught for representing the grouping of zero transform coefficients as ring-trees into a new symbol for more efficiently coding images. Directional transforms are taught which provide enhanced energy compactness of coefficients, and which capture directional energy resulting in generating enhanced visual quality.

    摘要翻译: 图像编码用于改变零系数聚类的表示,并利用新颖的方向变换来利用图像能量的方向属性。 该装置和方法可以应用于许多应用,例如在图像编解码器内。 教导了一种环树法,将零变换系数的分组表示为环树,形成新的符号以更有效地编码图像。 教导了提供增强的系数的能量紧密度的定向变换,并且其捕获定向能量,从而产生增强的视觉质量。