Compressive Wireless Modulation
    81.
    发明申请
    Compressive Wireless Modulation 有权
    压缩无线调制

    公开(公告)号:US20120121030A1

    公开(公告)日:2012-05-17

    申请号:US12945741

    申请日:2010-11-12

    IPC分类号: H04L5/12

    摘要: A projection code is applied to encode symbols as weighted arithmetic sums of approximately random subsets of binary source bits. Pairs of the symbols are combined to form constellation points, which are sequentially mapped through a constellation to modulate a data signal.

    摘要翻译: 应用投影码将符号编码为二进制源比特的近似随机子集的加权算术和。 这些符号的组合被组合以形成星座点,其通过星座顺序映射以调制数据信号。

    Retroreflective sheet structure
    82.
    发明授权
    Retroreflective sheet structure 有权
    反光板结构

    公开(公告)号:US08177374B2

    公开(公告)日:2012-05-15

    申请号:US11915390

    申请日:2006-06-07

    申请人: Feng Wu

    发明人: Feng Wu

    IPC分类号: G02B5/124

    摘要: A retroreflective sheet structure (10) comprising a transparent layer (20) having a front light-receiving surface (30) and a rear retroreflecting surface (32). Light incident on the front surface (30) will pass through the layer (20), impinge on the rear retroreflective surface (32) and reflect back out through the front surface (30) in a predetermined direction. An identifying indicia (44) is chosen and then formed on the retroreflecting surface (32). This indicia (44) can be used for identification purposes, even years after an end product incorporating the reflective sheet structure (10) has been out in the field.

    摘要翻译: 一种包括具有前光接收表面(30)和后回射表面(32)的透明层(20)的回射片结构(10)。 入射在前表面30上的光将穿过层20,撞击在后向后反射表面32上,并沿预定方向通过前表面30反射回。 选择识别标记(44),然后形成在回射表面(32)上。 甚至在整合了反射片结构(10)的最终产品已经在现场出来之后的几年中,该标记(44)可以用于识别目的。

    High dynamic range texture compression
    83.
    发明授权
    High dynamic range texture compression 有权
    高动态范围纹理压缩

    公开(公告)号:US08165393B2

    公开(公告)日:2012-04-24

    申请号:US12133369

    申请日:2008-06-05

    IPC分类号: G06K9/36

    CPC分类号: G06T9/00

    摘要: A method for compressing a high dynamic range (HDR) texture. A first block of texels of the HDR texture in a red-green-blue (RGB) space may be transformed to a second block of texels in a luminance-chrominance space. The first block may have red values, green values and blue values. The second block may have luminance values and chrominance values. The chrominance values may be based on a sum of the red values, a sum of the green values and a sum of the blue values. The luminance values and the chrominance values may be converted to an 8-bit integer format. The luminance values may be modified to restore a local linearity property to the second block. The second block may be compressed.

    摘要翻译: 一种用于压缩高动态范围(HDR)纹理的方法。 红 - 绿 - 蓝(RGB)空间中的HDR纹理的纹素的第一块可以被变换为亮度 - 色度空间中的第二纹理纹理块。 第一个块可能具有红色值,绿色值和蓝色值。 第二块可以具有亮度值和色度值。 色度值可以基于红色值的总和,绿色值的和与蓝色值的和。 亮度值和色度值可以被转换成8位整数格式。 可以修改亮度值以恢复与第二块的局部线性特性。 第二个块可能被压缩。

    Content adaptive deblocking during video encoding and decoding
    84.
    发明申请
    Content adaptive deblocking during video encoding and decoding 有权
    视频编码和解码过程中的内容自适应去块

    公开(公告)号:US20120082219A1

    公开(公告)日:2012-04-05

    申请号:US12924836

    申请日:2010-10-05

    IPC分类号: H04N7/32

    摘要: Disclosed herein are exemplary embodiments of methods, apparatus, and systems for performing content-adaptive deblocking to improve the visual quality of video images compressed using block-based motion-predictive video coding. For instance, in certain embodiments of the disclosed technology, edge information is obtained using global orientation energy edge detection (“OEED”) techniques on an initially deblocked image. OEED detection can provide a robust partition of local directional features (“LDFs”). For a local directional feature detected in the partition, a directional deblocking filter having an orientation corresponding to the orientation of the LDF can be used. The selected filter can have a filter orientation and activation thresholds that better preserve image details while reducing blocking artifacts. In certain embodiments, for a consecutive non-LDF region, extra smoothing can be imposed to suppress the visually severe blocking artifacts.

    摘要翻译: 这里公开了用于执行内容自适应解块以改善使用基于块的运动预测视频编码压缩的视频图像的视觉质量的方法,装置和系统的示例性实施例。 例如,在所公开的技术的某些实施例中,边缘信息是使用最初去块图像上的全局取向能量边缘检测(“OEED”)技术获得的。 OEED检测可以提供局部方向特征(“LDFs”)的鲁棒分区。 对于在分区中检测到的局部方向特征,可以使用具有与LDF的取向对应的取向的定向去块滤波器。 所选择的过滤器可以具有过滤器方向和激活阈值,以更好地保留图像细节,同时减少块伪影。 在某些实施例中,对于连续的非LDF区域,可以施加额外的平滑来抑制视觉上严重的块状伪影。

    LINE AND PIXEL BASED METHODS FOR INTRA FRAME CODING
    86.
    发明申请
    LINE AND PIXEL BASED METHODS FOR INTRA FRAME CODING 有权
    基于线和像素的框架编码方法

    公开(公告)号:US20120027313A1

    公开(公告)日:2012-02-02

    申请号:US12847001

    申请日:2010-07-30

    IPC分类号: G06K9/36

    摘要: Images can be coded based on filters defined by filter coefficients or weights assigned to previously decoded pixel values of nearby lines. The filter coefficients can be selected based on evaluation of a set of predetermined filters, or filters can be adaptively generated and then evaluated. The filters generally are based on pixel values in previous rows or columns, but not values in the current row or column. In some examples, filters are adaptively generated pixel by pixel, or portions of previous rows, columns, or previously decoded portions of the current row or columns are used to provide line templates. A filter is generally selected to reduce coding error based on a least square difference between the current value and a prediction.

    摘要翻译: 可以基于由分配给附近行的先前解码的像素值的滤波器系数或权重定义的滤波器对图像进行编码。 可以基于一组预定滤波器的评估来选择滤波器系数,或者可以自适应地生成滤波器,然后进行评估。 过滤器通常基于先前行或列中的像素值,但不是当前行或列中的值。 在一些示例中,滤波器被逐个像素自适应地生成,或者使用当前行或列的先前行,列或先前解码的部分的部分来提供行模板。 通常选择滤波器以基于当前值和预测之间的最小平方差来减少编码误差。

    Image resizing for web-based image search
    87.
    发明授权
    Image resizing for web-based image search 有权
    基于Web的图像搜索的图像大小调整

    公开(公告)号:US08081842B2

    公开(公告)日:2011-12-20

    申请号:US12113007

    申请日:2008-04-30

    摘要: Image resizing for web-based searching is described. In one implementation, a system resizes a user-selected thumbnail image into a larger version of the image that emulates the quality of a large, original image, but without downloading the original image. First, the system extracts resizing parameters when each thumbnail image is created. Then, the system creates a codebook of primitive visual elements extracted from a collection of training images. The primitive visual elements in the codebook provide universal visual parts for reconstructing images. The codebook and a resizing plug-in can be sent once to the user over a background channel. When the user selects a thumbnail image for enlargement, the system resizes the thumbnail image via interpolation and then refines the enlarged image with primitive visual elements from the codebook. The refinement creates an enlarged image that emulates the quality of the large, original image, without downloading the original image.

    摘要翻译: 描述了基于Web的搜索的图像调整大小。 在一个实现中,系统将用户选择的缩略图图像调整为模拟大的原始图像的质量但不下载原始图像的图像的较大版本。 首先,当创建每个缩略图时,系统提取调整大小的参数。 然后,系统创建从训练图像的集合中提取的原始视觉元素的码本。 码本中的原始视觉元素提供了用于重建图像的通用视觉部件。 码本和调整大小的插件可以通过背景频道一次发送给用户。 当用户选择缩放图像进行放大时,系统通过插值重新调整缩略图的大小,然后用码本中的原始视觉元素对放大图像进行细化。 细化创建一个放大的图像,可以模拟大型原始图像的质量,而无需下载原始图像。

    Vision-based compression
    88.
    发明授权
    Vision-based compression 有权
    基于视觉的压缩

    公开(公告)号:US08019171B2

    公开(公告)日:2011-09-13

    申请号:US11736900

    申请日:2007-04-18

    IPC分类号: G06K9/36

    摘要: Systems and methods provide vision-based image compression. In one implementation, inpainting is the vision-based technique selected to augment a conventional signal-processing-based technique. For some regions of a source image, an exemplary system efficiently extracts and organizes structural edge information instead of compressing the regions. In one implementation, the system applies binary curve fitting to capture the edge information. A structure-aware inpainter in the decoder can then restore the regions via the edge information, which occupies very little data space or minimal bandwidth in a bitstream that is transmitted from encoder to decoder. Key visual components of the image can still be conventionally compressed. Extracting edge information for some regions instead of compressing them considerably increases overall image compression.

    摘要翻译: 系统和方法提供基于视觉的图像压缩。 在一个实现中,修复是基于视觉的技术,其被选择用于增加常规的基于信号处理的技术。 对于源图像的一些区域,示例性系统有效地提取并组织结构边缘信息,而不是压缩该区域。 在一个实现中,系统应用二进制曲线拟合来捕获边缘信息。 然后,解码器中的结构感知输入器可以经由边缘信息来恢复区域,该边缘信息在从编码器传送到解码器的比特流中占据非常小的数据空间或最小带宽。 图像的主要视觉部件仍然可以被传统地压缩。 为某些区域提取边缘信息而不是压缩边缘信息显着增加了整体图像压缩。

    COMPRESSIVE DATA GATHERING FOR LARGE-SCALE WIRELESS SENSOR NETWORKS
    89.
    发明申请
    COMPRESSIVE DATA GATHERING FOR LARGE-SCALE WIRELESS SENSOR NETWORKS 有权
    用于大规模无线传感器网络的压缩数据采集

    公开(公告)号:US20110191496A1

    公开(公告)日:2011-08-04

    申请号:US12696415

    申请日:2010-01-29

    申请人: Chong Luo Feng Wu

    发明人: Chong Luo Feng Wu

    IPC分类号: G06F15/16

    CPC分类号: G06F15/16

    摘要: Techniques for data gathering in large-scale wireless sensor networks are described. A data collection device receives aggregate data from at least one sensor node of a group of N sensor nodes. The aggregate data includes M weighted sums. Each of the M weighted sums includes a respective sum of N products each of which being a product of a respective coefficient and a sensor reading from a respective one of the N sensor nodes. M and N are positive integers and M is less than N. Computation is performed on the aggregate data to recover sensor readings from the N sensor nodes.

    摘要翻译: 描述了在大规模无线传感器网络中收集数据的技术。 数据收集装置从一组N个传感器节点的至少一个传感器节点接收聚合数据。 聚合数据包括M个加权和。 M个加权和中的每一个包括N个乘积的相应和,每个N个乘积是相应系数的乘积和从N个传感器节点中的相应一个传感器节点的传感器读数。 M和N是正整数,M小于N.对聚合数据进行计算,以从N个传感器节点恢复传感器读数。