Histogram-based segmentation of images and video via color moments
    31.
    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
    32.
    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
    34.
    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
    35.
    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。

    Directional discrete wavelet transform (DDWT) for video compression applications
    36.
    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
    37.
    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
    38.
    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
    39.
    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。

    Extension to the AVC standard to support the encoding and storage of high resolution digital still pictures in series with video
    40.
    发明授权
    Extension to the AVC standard to support the encoding and storage of high resolution digital still pictures in series with video 有权
    扩展到AVC标准,以支持与视频串行编码和存储高分辨率数字静态图片

    公开(公告)号:US08170097B2

    公开(公告)日:2012-05-01

    申请号:US11999377

    申请日:2007-12-04

    IPC分类号: H04N7/12

    摘要: A codec configured to operate in a sequential mode extends the current AVC standard in order to provide support for coding high resolution still image pictures within the AVC coding of a lower resolution video. The sequential mode codec is configured according to the modified AVC standard. The codec is capable of capturing an AVC video stream while concurrently capturing high resolution still images at random intervals relative to the video stream. Each captured high resolution still image is embedded within the video stream. The video stream including the embedded high resolution still images is encoded as a single layer bit stream. Each embedded high resolution still image signals or forces the start of a new GOP in the coded video sequence. The AVC standard is extended to include new syntax for the sequence parameter sets. In one embodiment, a modified sequence parameter set defines a new profile that signals the presence of a high resolution still image in sequence with AVC video.

    摘要翻译: 配置为以顺序模式操作的编解码器扩展了当前AVC标准,以便为较低分辨率视频的AVC编码中的高分辨率静止图像图像编码提供支持。 顺序模式编解码器根据修改的AVC标准进行配置。 编解码器能够捕获AVC视频流,同时以相对于视频流的随机间隔捕获高分辨率静止图像。 每个捕获的高分辨率静止图像嵌入在视频流内。 包括嵌入式高分辨率静止图像的视频流被编码为单层比特流。 每个嵌入的高分辨率静止图像在编码视频序列中发出信号或强制新GOP的开始。 AVC标准被扩展为包括序列参数集的新语法。 在一个实施例中,修改的序列参数集定义了新的简档,其根据AVC视频依次表示高分辨率静止图像的存在。