2-D extended image generation from 3-D data extracted from a video sequence
    21.
    发明授权
    2-D extended image generation from 3-D data extracted from a video sequence 失效
    从视频序列中提取的3-D数据的2-D扩展图像生成

    公开(公告)号:US06504569B1

    公开(公告)日:2003-01-07

    申请号:US09064889

    申请日:1998-04-22

    IPC分类号: H04N1300

    摘要: A method of generating a 2-D extended image from a video sequence representing a natural 3-D scene first determines motion parameters for a camera that recorded the scene with respect to a bakcground object from the video sequence using a structure-from-motion algorithm. The motion parameters include a rotation matrix, a translation vector and a depth map representing the depth of each point in the background object from the camera. Next from the motion parameters and depth map the 2-D extended image is generated for the background object as a composition of the images from the video sequence using a plane perspective projection technique. The background object may be layered as a function of depth and flatness criteria to form a set of layered 2-D extended images for the background object from the video sequence.

    摘要翻译: 从表示自然3-D场景的视频序列中生成2-D扩展图像的方法首先使用运动结构算法来确定相对于来自视频序列的面包对象的记录场景的摄像机的运动参数 。 运动参数包括旋转矩阵,平移矢量和表示来自相机的背景物体中每个点的深度的深度图。 接下来,根据运动参数和深度图,使用平面透视投影技术从背景对象生成2-D扩展图像作为来自视频序列的图像的组合。 作为深度和平坦性标准的函数,背景对象可以被分层,以从视频序列形成背景对象的一组分层的2-D扩展图像。

    Histogram-based segmentation of images and video via color moments
    22.
    发明授权
    Histogram-based segmentation of images and video via color moments 有权
    基于直方图的图像分割和视频通过颜色时刻

    公开(公告)号:US06381363B1

    公开(公告)日:2002-04-30

    申请号:US09326164

    申请日:1999-06-04

    IPC分类号: G06K900

    摘要: A histogram-based segmentation of images in a video signal via color moments is initialized by a user defining regions in objects of interest from one or more images, key frames or pictures of the video signal. For each rectangle a normalized average color moment and associated co-variance matrix are determined which define a color class for that rectangle. From the normalized average color moment and associated co-variance garbage parameters are generated. Segmentation is then performed on a block basis on each image of the video sequence, a normalized color moment being generated for each block. Using a log likelihood test the closest color class for the block is determined. Based upon the closest color class and the garbage parameters for that color class a final determination is made in a two stage test as to whether the block belongs to the closest class or to a “garbage” class. All the continguous blocks that belong to a specific color class form the segmented object, and all of the objects are segmented in this manner.

    摘要翻译: 通过颜色时刻的视频信号中的图像的基于直方图的分割由用户定义来自视频信号的一个或多个图像,关键帧或图片的关注对象的区域来初始化。 对于每个矩形,确定归一化的平均色矩和相关协方差矩阵,其定义该矩形的颜色类。 从标准化的平均颜色时刻和相关的协方差垃圾参数生成。 然后以视频序列的每个图像为基础执行分段,为每个块生成归一化的颜色矩。 使用对数似然检验确定块的最接近的颜色等级。 基于最近的颜色等级和该颜色类的垃圾参数,在两级测试中进行关于块是属于最接近的类还是“垃圾”类的最终确定。 属于特定颜色类的所有相关块形成分段对象,并且所有对象都以此方式分段。

    Bit rate control mechanism for digital image and video data compression
    23.
    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:US5686964A

    公开(公告)日:1997-11-11

    申请号:US566100

    申请日:1995-12-04

    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.

    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。

    DATA-CHARGE PHASE DATA COMPRESSION ARCHITECTURE
    24.
    发明申请
    DATA-CHARGE PHASE DATA COMPRESSION ARCHITECTURE 审中-公开
    数据充电阶段数据压缩架构

    公开(公告)号:US20160366411A1

    公开(公告)日:2016-12-15

    申请号:US14736631

    申请日:2015-06-11

    摘要: Implementations generally relate to data-charge phase data compression. In one implementation, a method includes computing prediction values for image data, where the image data is data-charge phase data, and where the computing of prediction values is based on inter-block prediction. The method also includes computing residual data based on the prediction values. The method also includes quantizing the residual data. The method also includes entropy encoding the quantized residual data. The method also includes refining an inverse quantized residual data based on one or more of the residual data and a number of left-over bit-budget after entropy encoding.

    摘要翻译: 实现通常涉及数据充电阶段数据压缩。 在一个实现中,一种方法包括计算图像数据的预测值,其中图像数据是数据充电相位数据,并且其中预测值的计算基于块间预测。 该方法还包括基于预测值来计算残差数据。 该方法还包括量化剩余数据。 该方法还包括对量化的残差数据进行熵编码。 该方法还包括基于熵编码之后的剩余数据和剩余比特预算中的一个或多个来精炼逆量化残差数据。

    PRE-CHARGE PHASE DATA COMPRESSION
    25.
    发明申请
    PRE-CHARGE PHASE DATA COMPRESSION 审中-公开
    预充电阶段数据压缩

    公开(公告)号:US20160366410A1

    公开(公告)日:2016-12-15

    申请号:US14736597

    申请日:2015-06-11

    摘要: Implementations generally relate to pre-charge phase data compression. In some implementations, a method includes computing prediction values for image data, where the image data is pre-charge phase data. The method also includes computing residual data based on the prediction values. The method also includes quantizing the residual data. The method also includes entropy encoding the quantized residual data. The method also includes refining an inverse quantized residual data based on one or more of the residual data and a number of left-over bit-budget after entropy encoding.

    摘要翻译: 实现通常涉及预充电相位数据压缩。 在一些实现中,一种方法包括计算图像数据的预测值,其中图像数据是预充电阶段数据。 该方法还包括基于预测值来计算残差数据。 该方法还包括量化剩余数据。 该方法还包括对量化的残差数据进行熵编码。 该方法还包括基于熵编码之后的剩余数据和剩余比特预算中的一个或多个来精炼逆量化残差数据。

    Intra prediction with adaptive interpolation filtering for image compression
    26.
    发明授权
    Intra prediction with adaptive interpolation filtering for image compression 有权
    用于图像压缩的自适应插值滤波的帧内预测

    公开(公告)号:US08774541B2

    公开(公告)日:2014-07-08

    申请号:US12265653

    申请日:2008-11-05

    IPC分类号: G06K9/36 G06K9/46

    摘要: A method and apparatus for adaptive interpolation filtering for image compression is disclosed. The method includes determining an activity measure associated with a set of pixels neighboring a pixel undergoing intraframe prediction or a distance measure between at least one pixel in the set of pixels and the pixel undergoing intraframe prediction, and selecting a filter for filtering at least a portion of the set of pixels in accordance with the at least one of the activity measure or the distance measure.

    摘要翻译: 公开了一种用于图像压缩的自适应插值滤波的方法和装置。 所述方法包括:确定与经历帧内预测的像素相邻的像素集相关联的活动度量,或者在所述像素集合中的至少一个像素与进行帧内预测的像素之间的距离测量,以及选择用于对至少一部分进行滤波的滤波器 根据活动度量或距离度量中的至少一个来生成像素集合。

    Directional discrete wavelet transform (DDWT) for video compression applications
    27.
    发明授权
    Directional discrete wavelet transform (DDWT) for video compression applications 有权
    用于视频压缩应用的定向离散小波变换(DDWT)

    公开(公告)号:US08705619B2

    公开(公告)日:2014-04-22

    申请号:US12962645

    申请日:2010-12-07

    IPC分类号: H04N7/30

    摘要: An apparatus and method for encoding video using directional discrete waveform transforms (DDWT), such as within a codec device. DDWT can be utilized to replace the use of intra transforms and inter transforms within the encoding system. In many ways the output of the DDWT can be compared with that provided using MDDT, however, it does not require a training process while it also provides enhanced encoding of feature edges with desirable visual characteristics. The transforms are applied in at least two passes, along the prediction direction, and then across the prediction direction, instead of being applied in fixed vertical and horizontal directions. Directional scaling is not required prior to the second stage of transforms.

    摘要翻译: 一种使用定向离散波形变换(DDWT)编码视频的装置和方法,例如在编解码器装置内。 DDWT可用于替代编码系统内部帧内变换和帧间变换的使用。 在许多方面,可以将DDWT的输出与使用MDDT提供的输出进行比较,但是它不需要训练过程,同时还可以对特征边缘进行增强编码,并具有理想的视觉特征。 沿着预测方向在至少两遍中施加变换,然后跨越预测方向施加变换,而不是施加在固定的垂直和水平方向上。 在第二阶段的转换之前不需要定向缩放。

    System And Method For Effectively Implementing A Lens Array In An Electronic Device
    28.
    发明申请
    System And Method For Effectively Implementing A Lens Array In An Electronic Device 有权
    在电子设备中有效实现透镜阵列的系统和方法

    公开(公告)号:US20140016016A1

    公开(公告)日:2014-01-16

    申请号:US13752580

    申请日:2013-01-29

    IPC分类号: H04N5/232

    摘要: A system for implementing and utilizing a lens array in an electronic device includes a sensor array coupled to the electronic device for capturing image data corresponding to a photographic target. The lens array includes a plurality of lenses that each has a different respective principal focal length to transmit reflected light from the photographic target to the sensor array. The sensor array captures a set of MFP images that each corresponds with a respective one of the lenses in the MFP lens array. The electronic device may further include an image processor that performs one or more digital signal processing procedures on the captured MFP images to thereby generate a rendered final image.

    摘要翻译: 用于在电子设备中实现和利用透镜阵列的系统包括耦合到电子设备的传感器阵列,用于捕获与摄影目标相对应的图像数据。 透镜阵列包括多个透镜,每个透镜具有不同的相应的主焦距,以将来自摄影目标的反射光传输到传感器阵列。 传感器阵列捕获一组MFP图像,每个MFP图像对应于MFP透镜阵列中的相应的一个透镜。 电子设备还可以包括对所捕获的MFP图像执行一个或多个数字信号处理过程从而生成渲染的最终图像的图像处理器。

    Run length coding with context model for image compression using sparse dictionaries
    29.
    发明授权
    Run length coding with context model for image compression using sparse dictionaries 失效
    使用稀疏词典进行图像压缩的上下文模型的运行长度编码

    公开(公告)号:US08483500B2

    公开(公告)日:2013-07-09

    申请号:US12962638

    申请日:2010-12-07

    IPC分类号: G06K9/36 G06K9/46

    摘要: Apparatus and methods for coding images geometric vector quantization (GVQ) having an over-complete dictionary which produces a sparse vector of coefficients as it contains large runs of zeros. The sparse encoding is particularly well suited for use with run-length entropy coding techniques. Image blocks are sparse coded using GVQ, with the vector of coefficients converted to RUN-LENGTH symbols, and binarized into a set of binary symbols. At least a portion of the binary symbols are used as contexts which can be selected when performing binary arithmetic coding of the binary coded RUN and LENGTH data to generate a bit stream containing the encoded image that provides enhanced compression.

    摘要翻译: 用于编码具有过完整字典的图像几何矢量量化(GVQ)的装置和方法,其在包含大量零的零时产生系数的稀疏矢量。 稀疏编码特别适用于游程长度熵编码技术。 使用GVQ对图像块进行稀疏编码,将系数矢量转换为RUN-LENGTH符号,并将其二值化为一组二进制符号。 二进制符号的至少一部分被用作当对二进制编码的RUN和LENGTH数据执行二进制算术编码时可以选择的上下文,以生成包含提供增强压缩的编码图像的比特流。

    VIDEO SYSTEM WITH QUANTIZATION MATRIX CODING MECHANISM AND METHOD OF OPERATION THEREOF
    30.
    发明申请
    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:US20130163662A1

    公开(公告)日:2013-06-27

    申请号:US13333064

    申请日:2011-12-21

    IPC分类号: H04N7/26

    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。