公开(公告)号：US20150124067A1

公开(公告)日：2015-05-07

申请号：US14071355

申请日：2013-11-04

Applicant: Xerox Corporation

Inventor： Raja BALA ,  Beilei XU ,  Lalit Keshav MESTHA ,  Graham S. PENNINGTON ,  Stuart A. SCHWEID

IPC: H04N5/235 ,  H04N7/18 ,  G06T7/00 ,  G06K9/00

CPC classification number: H04N5/2354 ,  A61B5/0077 ,  A61B5/02 ,  A61B5/0205 ,  A61B5/02427 ,  A61B5/02433 ,  A61B5/0803 ,  A61B5/14552 ,  A61B5/6898 ,  G06K9/2027 ,  H04N5/2256

Abstract: What is disclosed is a handheld device having at least one illuminator for projecting source light and a video camera for capturing images of a region of interest of a subject being monitored for a desired physiological function. The handheld device is positioned such that light reflected off the subject's region of interest is received by a sensor. A determination is then made as to how a physiological signal extracted from video images captured by the video camera can be improved by an adjustment to the illuminator with respect to intensity, spectrally, spatially, and/or temporally, to improve accuracy of a measurement of a desired physiological function. The illuminator is adjusted and video images of a region of interest are captured by the video camera and processed to extract a physiological signal corresponding to that physiological function. That signal is used to monitor the desired physiological function. Various embodiments are disclosed.

Abstract translation: 所公开的是具有用于投射源光的至少一个照明器和用于捕获被监测的对象的感兴趣区域的图像用于所需生理功能的摄像机的手持设备。 手持设备被定位成使得从感兴趣区域反射的光被传感器接收。 然后，确定如何通过相对于强度，光谱，空间和/或时间上对照明器的调整来改善由摄像机拍摄的视频图像提取的生理信号，以提高测量的精度 所需的生理功能。 照明器被调整，并且摄像机捕获感兴趣区域的视频图像，并进行处理以提取对应于该生理功能的生理信号。 该信号用于监测所需的生理功能。 公开了各种实施例。

公开(公告)号：US20210402755A1

公开(公告)日：2021-12-30

申请号：US16913351

申请日：2020-06-26

Applicant: Xerox Corporation

Inventor： Martin L. FRACHIONI ,  Christopher MIENEY ,  David A. VANKOUWENBERG ,  David M. GURAK ,  Stuart A. SCHWEID

IPC: B41F31/02 ,  B41F31/13

Abstract: Examples of the preferred embodiments use an ink quantity metric (e.g., lightness L*, darkness, image density, line width) of printed content to determine thickness of fountain solution applied by a fountain solution applicator on an imaging member surface and/or determine image forming device real-time image forming modifications for subsequent printings. For example, in real-time during the printing of a print job, a sensor (e.g., spectrometer) may measure the ink quantity metric of the current printing on print substrate. Based on this measurement of printed content output from the image forming device, the image forming device may adjust image forming (e.g., fountain solution deposition flow rate) to reach or maintain a preferred fountain solution thickness on the imaging member surface for subsequent (e.g., next) printings of the print job.