公开(公告)号：US20130027576A1

公开(公告)日：2013-01-31

申请号：US13526773

申请日：2012-06-19

申请人： Daniel RYAN ,  Peter STAATS ,  Rob SUMNER

发明人： Daniel RYAN ,  Peter STAATS ,  Rob SUMNER

IPC分类号： H04N5/228

CPC分类号： H04N5/23293 ,  G01C21/206 ,  G01S1/70 ,  G06T3/40 ,  H04B10/116 ,  H04M1/0264 ,  H04M2250/52 ,  H04N5/3532 ,  H04W4/04 ,  H04W4/33

摘要： In one aspect, the present disclosure relates to a method for recognizing a broadcast digital pulse recognition tone in a beacon-based light positioning system. In some embodiments, the method includes capturing a digital image using an imaging sensor of an imaging device, identifying one or more regions of the digital image illuminated by one of one or more beacon light sources, determining a frequency content of each of the one or more regions, and determining a particular tone broadcast by the beacon light source illuminating a particular region using the frequency content of the particular region. In some embodiments, the imaging sensor has a frame rate and includes a rolling shutter, the rolling shutter having a sampling rate greater than the frame rate of the imaging sensor.

摘要翻译： 一方面，本公开涉及一种在基于信标的光定位系统中识别广播数字脉冲识别音的方法。 在一些实施例中，该方法包括使用成像装置的成像传感器捕获数字图像，识别由一个或多个信标光源之一照亮的数字图像的一个或多个区域，确定一个或多个信标光源中的每一个的频率内容 并且使用所述特定区域的频率内容来确定由所述信标光源广播的特定音调来照亮特定区域。 在一些实施例中，成像传感器具有帧速率并且包括滚动快门，滚动快门具有大于成像传感器的帧速率的采样率。

公开(公告)号：US20130028609A1

公开(公告)日：2013-01-31

申请号：US13526779

申请日：2012-06-19

申请人： Peter STAATS ,  Rob SUMNER ,  Daniel RYAN

发明人： Peter STAATS ,  Rob SUMNER ,  Daniel RYAN

IPC分类号： H04B10/10

CPC分类号： G01S1/70 ,  G01S5/16

摘要： In one aspect, the present disclosure relates to a method for demodulating a modulated light signal in a light based positioning system. In some embodiments, the method includes receiving a modulated light signal at a device, the modulated light signal transmitting an arbitrary identifier of a light source, recording the modulated light signal using a rolling shutter image sensor to create a raw image having alternating spaced apart stripes, subtracting background information from the raw image to create an isolated image, taking a Fourier transform of an image representative of the isolated image to calculate a Fourier transformed signal, and determining the arbitrary identifier of the light source based on the Fourier transformed signal.

摘要翻译： 一方面，本公开涉及一种在基于光的定位系统中解调调制光信号的方法。 在一些实施例中，该方法包括在设备处接收调制光信号，调制光信号传输光源的任意标识符，使用滚动快门图像传感器记录调制的光信号，以产生具有交替间隔开的条纹的原始图像 从所述原始图像中减去背景信息以创建孤立图像，对代表所述孤立图像的图像进行傅里叶变换，以计算傅里叶变换信号，以及基于所述傅里叶变换信号确定所述光源的任意标识符。

公开(公告)号：US20130027528A1

公开(公告)日：2013-01-31

申请号：US13526814

申请日：2012-06-19

申请人： Peter STAATS ,  Rob SUMNER ,  Daniel RYAN

发明人： Peter STAATS ,  Rob SUMNER ,  Daniel RYAN

IPC分类号： H04N7/173

CPC分类号： G01S1/70 ,  G01S5/0009 ,  G01S5/0263 ,  G01S5/16 ,  G01S19/48

摘要： In one aspect, the present disclosure relates to a method for isolating a broadcast digital pulse recognition tone of a beacon light source in a digital video sequence. In some embodiments, the method includes receiving a digital video sequence of a scene, the digital video sequence including a sequence of frames and the scene including both modulated illumination broadcast by a beacon light source and un-modulated illumination, calculating a background value of the digital video sequence, the background value including a portion of the digital video sequence corresponding to the un-modulated illumination of the scene, subtracting the background value of the digital video sequence to obtain an isolated digital video sequence of the modulated illumination of the scene, calculating a frequency content of a frame of the isolated digital video sequence, and determining a particular tone broadcast by the beacon light source based on the frequency content.

摘要翻译： 一方面，本发明涉及用于隔离数字视频序列中的信标光源的广播数字脉冲识别色调的方法。 在一些实施例中，该方法包括接收场景的数字视频序列，数字视频序列包括一系列帧，并且场景包括由信标光源广播的调制照明和未调制照明，计算 数字视频序列，背景值包括与场景的未调制照明相对应的数字视频序列的一部分，减去数字视频序列的背景值以获得场景的调制照明的隔离数字视频序列， 计算隔离数字视频序列的帧的频率内容，以及基于频率内容确定由信标光源广播的特定音调。