Apparatus and method for describing the motion parameters of an object in an image sequence
    1.
    发明授权
    Apparatus and method for describing the motion parameters of an object in an image sequence 有权
    用于描述图像序列中的对象的运动参数的装置和方法

    公开(公告)号:US06366701B1

    公开(公告)日:2002-04-02

    申请号:US09489627

    申请日:2000-01-24

    IPC分类号: G06K946

    摘要: An apparatus and method for implementing object trajectory segmentation for an image sequence. Specifically, block-based motion vectors for a pair of adjacent frames are used to derive optical flow, e.g., affine, motion parameters. The object trajectory segmenter applies the optical flow motion parameters to form a new prediction or method for predicting the positions of all the points on an object over time within an interval. The new prediction is then applied and the result is compared with an error metric. The results from such comparison with the error metric will dictate the proper intervals (temporal boundaries) of the image sequence at which the motion parameters are valid for various key objects.

    摘要翻译: 一种用于实现图像序列的对象轨迹分割的装置和方法。 具体地,使用一对相邻帧的基于块的运动矢量来导出光流,例如仿射运动参数。 对象轨迹分割器应用光流运动参数以形成用于在间隔内随时间预测物体上的所有点的位置的新预测或方法。 然后应用新的预测,并将结果与​​误差度量进行比较。 与误差度量的这种比较的结果将指示运动参数对于各种关键对象有效的图像序列的适当间隔(时间边界)。

    Apparatus and method for context-based indexing and retrieval of image sequences
    2.
    发明授权
    Apparatus and method for context-based indexing and retrieval of image sequences 有权
    用于基于上下文的索引和图像序列检索的装置和方法

    公开(公告)号:US06643387B1

    公开(公告)日:2003-11-04

    申请号:US09490085

    申请日:2000-01-24

    IPC分类号: G06K962

    摘要: An apparatus and method for implementing object motion segmentation and object trajectory segmentation for an image sequence. Specifically, block-based motion vectors for a pair of adjacent frames are used to derive optical flow, e.g., affine, motion parameters. Such optical flow motion parameters are employed to determine key objects where their motion and trajectory within a sequence of frames are calculated and stored. Such object motion information is used to improve or offer image processing functions such as context-based indexing of the input image sequence by using motion-based information.

    摘要翻译: 一种用于实现图像序列的物体运动分割和物体轨迹分割的装置和方法。 具体地,使用一对相邻帧的基于块的运动矢量来导出光流,例如仿射运动参数。 采用这种光流运动参数来确定其中计算并存储帧序列内的运动和轨迹的关键对象。 这样的对象运动信息用于通过使用基于运动的信息来改进或提供图像处理功能,例如输入图像序列的基于上下文的索引。

    Enhancing the coding of video by post multi-modal coding
    5.
    发明申请
    Enhancing the coding of video by post multi-modal coding 审中-公开
    通过后多模态编码增强视频编码

    公开(公告)号:US20090067494A1

    公开(公告)日:2009-03-12

    申请号:US12150204

    申请日:2008-04-25

    申请人: Iraj Sodagar

    发明人: Iraj Sodagar

    IPC分类号: H04N7/26

    摘要: Post multi-modal coding overcomes the shortcomings of video encoders which fail to meet an expected quality standard while encoding some portions of a video. The deficient encoding is typically due to the type of video content or the encoding technique. A method to improve the quality of the deficient portions, identifies macroblocks that are encoded at a deficient quality. Then, the identified macroblocks are encoded with another suitable encoding technique so that the desired quality is met. The improved macroblocks are then inserted into the original bit-stream, replacing the lower quality sections.

    摘要翻译: 后多模式编码克服了在编码视频的一些部分时不能达到预期质量标准的视频编码器的缺点。 缺陷编码通常是由于视频内容的类型或编码技术造成的。 一种改善缺陷部分的质量的方法,识别以缺陷质量编码的宏块。 然后,使用另一合适的编码技术对所识别的宏块进行编码,以满足期望的质量。 然后,将改进的宏块插入到原始比特流中,代替较低质量的部分。

    Apparatus and method for encoding zerotrees generated by a wavelet-based coding technique
    6.
    发明授权
    Apparatus and method for encoding zerotrees generated by a wavelet-based coding technique 失效
    用于编码通过基于小波的编码技术产生的零点的装置和方法

    公开(公告)号:US06483946B1

    公开(公告)日:2002-11-19

    申请号:US08736114

    申请日:1996-10-24

    IPC分类号: G06K936

    摘要: Apparatus and method for encoding zerotrees in a wavelet-based coding technique. The method uses a depth-first pattern for traversing the zerotree, i.e., each branch of the tree, from parent to child to grandchild and so on, is fully traversed before a next branch is traversed. The depth-first tree traversal pattern is used to quantize the coefficients of the tree as well as to assign symbols to the quantized coefficients. The method assigns one of three symbols to each node: ZEROTREE ROOT, VALUED ZEROTREE ROOT, and VALUE. By using three symbols and the efficient tree traversal pattern, the method is substantially more efficient at encoding a zerotree than the prior art. Additionally, this concept is applied to the encoding of “vector” zerotrees.

    摘要翻译: 在基于小波的编码技术中编码零点的装置和方法。 该方法使用深度优先模式遍历零树,即树的每个分支,从父到子到孙,等等,在遍历下一个分支之前,完全遍历。 深度优先树遍历模式用于对树的系数进行量化,并将符号分配给量化系数。 该方法为每个节点分配三个符号之一:ZEROTREE ROOT,VALUED ZEROTREE ROOT和VALUE。 通过使用三个符号和有效的树遍历模式,该方法比现有技术在编码零树方面显着更有效率。 另外,这个概念被应用于“矢量”零点的编码。

    Dominant gradient method for finding focused objects
    8.
    发明授权
    Dominant gradient method for finding focused objects 失效
    用于查找聚焦对象的主导梯度法

    公开(公告)号:US08379985B2

    公开(公告)日:2013-02-19

    申请号:US12497589

    申请日:2009-07-03

    申请人: Iraj Sodagar

    发明人: Iraj Sodagar

    IPC分类号: G06K9/46 G06K9/40

    摘要: The dominant gradient method for finding focused objects determines focused objects within an image or video frame using a dominant gradient method. The method also uses a segmentation map of the image to determine parameters which are used in ranking the objects based on their focus. The ranking of the objects is able to be used to assist in enhancing the image, encoding the image and adjusting the lens while capturing the image.

    摘要翻译: 用于找到聚焦对象的主要梯度方法使用主要梯度方法确定图像或视频帧内的聚焦对象。 该方法还使用图像的分割图来确定基于其焦点对对象进行排序的参数。 物体的排列能够用于帮助增强图像,对图像进行编码并且在捕获图像的同时调整透镜。

    METHOD AND APPARATUS FOR INTRA-PREDICTION IN A VIDEO ENCODER
    9.
    发明申请
    METHOD AND APPARATUS FOR INTRA-PREDICTION IN A VIDEO ENCODER 审中-公开
    在视频编码器中进行预测的方法和装置

    公开(公告)号:US20100246675A1

    公开(公告)日:2010-09-30

    申请号:US12414256

    申请日:2009-03-30

    IPC分类号: H04N11/04

    摘要: Method and apparatus for intra-prediction in a video encoder are described. An aspect relates to a method of intra-prediction for a group of samples in an image being coded. In some examples, the method includes: defining a target template for the group of samples; comparing the target template with affine transformations of candidate templates within a search area of the image; identifying at least one matching template of the candidate templates as matching the target template; determining a candidate group of samples based on the at least one matching template; and coding the group of samples using the candidate group of samples as a predictor.

    摘要翻译: 描述视频编码器中帧内预测的方法和装置。 一方面涉及正在编码的图像中的一组样本的帧内预测方法。 在一些示例中,该方法包括:定义该组样本的目标模板; 将目标模板与图像的搜索区域内的候选模板的仿射变换进行比较; 将所述候选模板的至少一个匹配模板识别为匹配所述目标模板; 基于所述至少一个匹配模板确定候选样本组; 并且使用候选样本组来编码样本组作为预测器。

    Method and apparatus for generic scalable shape coding by deriving shape information for chrominance components from luminance component
    10.
    发明授权
    Method and apparatus for generic scalable shape coding by deriving shape information for chrominance components from luminance component 有权
    通过从亮度分量导出色度分量的形状信息的通用可缩放形状编码的方法和装置

    公开(公告)号:US06459814B1

    公开(公告)日:2002-10-01

    申请号:US09391058

    申请日:1999-09-07

    IPC分类号: G06K936

    摘要: A generic spatially scalable shape encoding apparatus and method for deriving shape information for chrominance components from luminance component. The present generic spatially-scalable shape encoding applies a series of subband (e.g., wavelet) filters to obtain N-levels of wavelet decomposition for the texture information of both luminance and chrominance components. The application of the corresponding subsampling filters of said subband filters is applied in a manner such that the shape of the chrominance can be derived from the shape of the luminance at the same spatial layer.

    摘要翻译: 一种用于从亮度分量导出色度分量的形状信息的通用空间可缩放形状编码装置和方法。 本发明的通用空间可缩放形状编码应用一系列子带(例如,小波)滤波器以获得用于亮度和色度分量的纹理信息的N级小波分解。 应用所述子带滤波器的相应子采样滤波器的应用方式使得可以从同一空间层的亮度的形状导出色度的形状。