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    SIGNAL PROCESSORS AND METHODS FOR ESTIMATING TRANSFORMATIONS BETWEEN SIGNALS WITH LEAST SQUARES
    72.
    发明申请
    SIGNAL PROCESSORS AND METHODS FOR ESTIMATING TRANSFORMATIONS BETWEEN SIGNALS WITH LEAST SQUARES 审中-公开
    信号处理器和估计信号与最小二乘法之间的变换的方法

    公开(公告)号：US20160132986A1

    公开(公告)日：2016-05-12

    申请号：US14936359

    申请日：2015-11-09

    Applicant: Digimarc Corporation

    Inventor： Ravi K. Sharma ,  John D. Lord ,  Robert G. Lyons

    IPC: G06T1/00 ,  G06K9/62 ,  G06T3/00

    CPC classification number: G06T1/0064 ,  G06F1/02 ,  G06K9/6206 ,  G06T1/0021 ,  G06T3/0006 ,  G06T3/0056

    Abstract: Signal processing devices and methods estimate transforms between signals using a least squares technique. From a seed set of transform candidates, a direct least squares method applies a seed transform candidate to a reference signal and then measures correlation between the transformed reference signal and a suspect signal. For each candidate, update coordinates of reference signal features are identified in the suspect signal and provided as input to a least squares method to compute an update to the transform candidate. The method iterates so long as the update of the transform provides a better correlation. At the end of the process, the method identifies a transform or set of top transforms based on a further analysis of correlation, as well as other results.

    Abstract translation: 信号处理装置和方法使用最小二乘法估计信号之间的变换。 从种子变换候选组中，直接最小二乘法将种子变换候选应用于参考信号，然后测量变换的参考信号与可疑信号之间的相关性。 对于每个候选者，参考信号特征的更新坐标在可疑信号中被识别，并作为输入提供给最小二乘法以计算变换候选的更新。 只要变换的更新提供了更好的相关性，该方法将重复。 在该过程结束时，该方法基于对相关性的进一步分析以及其他结果来识别变换或顶点变换集合。

    SHARED SECRET ARRANGEMENTS AND OPTICAL DATA TRANSFER
    73.
    发明申请
    SHARED SECRET ARRANGEMENTS AND OPTICAL DATA TRANSFER 审中-公开
    共享秘密安排和光学数据传输

    公开(公告)号：US20150215295A1

    公开(公告)日：2015-07-30

    申请号：US14681610

    申请日：2015-04-08

    Applicant: Digimarc Corporation

    Inventor： John D. Lord ,  John Stach

    IPC: H04L29/06 ,  H04M1/00 ,  H04B10/00 ,  H04W12/04

    CPC classification number: H04L63/0428 ,  H04B10/1141 ,  H04B10/116 ,  H04B10/22 ,  H04L63/083 ,  H04L63/18 ,  H04M1/003 ,  H04M1/0264 ,  H04W12/04 ,  H04W12/06 ,  H04W88/06

    Abstract: Digital data is optically broadcast through an environment by controllably switching the brightness or chrominance of LED solid state lamps, or of other illumination sources (e.g., television screens and backlit computer displays). This optical data channel is useful to convey cryptographic key data by which devices within the environment can authenticate themselves to a secure network. In some embodiments, the optical modulation is sensed by the camera of a smartphone. The row data output by the smartphone's camera sensor is processed to extract the modulated data signal. In some monochrome embodiments, data communication speeds far in excess of the camera's frame rate (e.g., 30/second), or even the camera's row rate (e.g., 14,400/second) are achieved. Still greater rates can be achieved by conveying different data in different chrominance channels. A great number of other features and arrangements are also detailed.

    Abstract translation: 通过可控地切换LED固态灯或其他照明源（例如电视屏幕和背光式计算机显示器）的亮度或色度，通过环境光学广播数字数据。 该光学数据信道用于传达加密密钥数据，通过该加密密钥数据，环境中的设备可以将其自身认证到安全网络。 在一些实施例中，光学调制由智能电话的相机感测。 处理由智能电话摄像机传感器输出的行数据以提取调制数据信号。 在一些单色实施例中，实现远超过相机的帧速率（例如，30 /秒）的数据通信速度，甚至相机的行速率（例如，14,400 /秒）。 通过在不同的色度通道中传送不同的数据可以实现更高的速率。 还详细介绍了许多其他功能和安排。

    SIGNAL PROCESSORS AND METHODS FOR ESTIMATING TRANSFORMATIONS BETWEEN SIGNALS WITH PHASE ESTIMATION
    74.
    发明申请
    SIGNAL PROCESSORS AND METHODS FOR ESTIMATING TRANSFORMATIONS BETWEEN SIGNALS WITH PHASE ESTIMATION 审中-公开
    信号处理器和用于估计信号与相位估计之间的变换的方法

    公开(公告)号：US20150106416A1

    公开(公告)日：2015-04-16

    申请号：US14520160

    申请日：2014-10-21

    Applicant: Digimarc Corporation

    Inventor： Robert G. Lyons ,  John D. Lord

    IPC: G06F1/02

    CPC classification number: G06T1/0064 ,  G06F1/02 ,  G06K9/6206 ,  G06T1/0021 ,  G06T3/0006 ,  G06T3/0056

    Abstract: A phase estimation method estimates the phase of signal components using a point spread function. The method obtains a point spread function that expresses complex frequencies at a non integer location in terms of integral frequencies, for a complex frequency of a signal at a non integer location in a complex frequency domain. It obtains complex frequencies of the signal for the integral frequencies, and computes a sum of products of the complex frequencies of the signal at the integral frequencies with the corresponding complex values of the point spread function to provide an estimate of phase of the signal at the non integer location.

    Abstract translation: 相位估计方法使用点扩散函数来估计信号分量的相位。 对于复数频域中的非整数位置处的信号的复频率，该方法获得以积分频率表示非整数位置的复数频率的点扩散函数。 它获得用于积分频率的信号的复杂频率，并且计算积分频率处的信号的复频率与点扩散函数的相应复数值的乘积之和，以提供信号的相位的估计 非整数位置。

    Mobile phone using dedicated and programmable processors for pipelined image processing, and method thereof
    76.
    发明授权
    Mobile phone using dedicated and programmable processors for pipelined image processing, and method thereof 有权
    使用用于流水线图像处理的专用和可编程处理器的手机及其方法

    公开(公告)号：US08855712B2

    公开(公告)日：2014-10-07

    申请号：US13836166

    申请日：2013-03-15

    Applicant: Digimarc Corporation

    Inventor： John D. Lord ,  Geoffrey B. Rhoads ,  Tony F. Rodriguez

    IPC: H04M1/00 ,  G06K9/00 ,  G06K9/22 ,  G06K9/46 ,  G06F17/30 ,  H04M1/02 ,  H04W4/00 ,  G06K9/62 ,  H04N1/00 ,  H04N101/00 ,  H04N1/32

    CPC classification number: H04N5/23222 ,  G06F17/30244 ,  G06F19/00 ,  G06K9/00288 ,  G06K9/00577 ,  G06K9/228 ,  G06K9/4604 ,  G06K9/4647 ,  G06K9/4652 ,  G06K9/4671 ,  G06K9/6253 ,  H04M1/0202 ,  H04M1/0264 ,  H04N1/00307 ,  H04N1/2133 ,  H04N1/32101 ,  H04N5/23219 ,  H04N2101/00 ,  H04N2201/3225 ,  H04N2201/3274 ,  H04N2201/3278 ,  H04W4/50

    Abstract: Cell phones and other portable devices are equipped with a variety of technologies by which existing functionality is improved, and new functionality is provided. Some aspects relate to imaging architectures, in which a cell phone's image sensor is one in a chain of stages that successively act on instructions/data, to capture and later process imagery. Other aspects relate to distribution of processing tasks between the device and remote resources (“the cloud”). Elemental image processing, such as filtering and edge detection—and even some simpler template matching operations—may be performed on the cell phone. Other operations are referred out to remote service providers. The remote service providers can be identified using techniques such as a reverse auction, through which they compete for processing tasks. Other aspects of the disclosed technologies relate to visual search capabilities, and determining appropriate actions responsive to different image inputs. Still others concern metadata generation, processing, and representation. A great number of other features and arrangements are also detailed.

    Abstract translation: 手机和其他便携式设备配备有各种技术，通过该技术改进现有的功能，并提供新的功能。 一些方面涉及成像架构，其中手机的图像传感器是连续地作用在指令/数据上的阶段链中，以捕获和稍后处理图像。 其他方面涉及设备和远程资源（“云”）之间的处理任务分配。 可以在蜂窝电话上执行元素图像处理，例如滤波和边缘检测，甚至一些更简单的模板匹配操作。 其他操作被转交给远程服务提供商。 可以使用诸如反向拍卖的技术来识别远程服务提供商，通过它们竞争处理任务。 所公开技术的其他方面涉及视觉搜索能力，并且响应于不同的图像输入来确定适当的动作。 还有一些涉及元数据生成，处理和表示。 还详细介绍了许多其他功能和安排。

    COORDINATED ILLUMINATION AND IMAGE SIGNAL CAPTURE FOR ENHANCED SIGNAL DETECTION
    78.
    发明申请
    COORDINATED ILLUMINATION AND IMAGE SIGNAL CAPTURE FOR ENHANCED SIGNAL DETECTION 有权
    协调的照明和图像信号增强信号检测

    公开(公告)号：US20130329006A1

    公开(公告)日：2013-12-12

    申请号：US13964014

    申请日：2013-08-09

    Applicant: Digimarc Corporation

    Inventor： Jacob L. Boles ,  Alastair M. Reed ,  John D. Lord

    IPC: H04N9/73

    CPC classification number: G06K7/10722 ,  G06F17/30879 ,  G06K7/12 ,  G06K7/1413 ,  G06K9/2018 ,  G06K9/2027 ,  G06K9/209 ,  H04N1/40056 ,  H04N1/482 ,  H04N5/2256 ,  H04N5/33 ,  H04N9/73

    Abstract: Signal detection and recognition employees coordinated illumination and capture of images under to facilitate extraction of a signal of interest. Pulsed illumination of different colors facilitates extraction of signals from color channels, as well as improved signal to noise ratio by combining signals of different color channels. The successive pulsing of different color illumination appears white to the user, yet facilitates signal detection, even for lower cost monochrome sensors, as in barcode scanning and other automatic identification equipment.

    Abstract translation: 信号检测和识别员工协调图像的照明和捕获，以便于提取感兴趣的信号。 不同颜色的脉冲照明有助于从彩色通道中提取信号，以及通过组合不同颜色通道的信号来提高信噪比。 不同颜色照明的连续脉冲对于用户来说是白色的，但即使对于较低成本的单色传感器也是如条形码扫描和其他自动识别设备那样便于信号检测。

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