公开(公告)号：US20170363896A1

公开(公告)日：2017-12-21

申请号：US15187769

申请日：2016-06-20

Applicant: Yongwu Yang ,  Canwen Liu

Inventor： Yongwu Yang ,  Canwen Liu

IPC: G02F1/133 ,  G02F1/1335 ,  G02F1/1368 ,  G02F1/137 ,  G02F1/1343

CPC classification number: G02F1/13318 ,  G02F1/1313 ,  G02F1/133528 ,  G02F1/134336 ,  G02F1/1368 ,  G02F1/137 ,  G02F2001/13312 ,  G02F2001/133531 ,  G02F2001/13756 ,  G02F2203/48

Abstract: A light attenuation apparatus for adjusting the intensity of light transmitted through the apparatus, comprises: a light detector array for measuring light intensity incident on the light attenuation apparatus; and LCD filter panel, comprising: a first polarizer having a polarizing orientation; a second polarizer; a first substrate with a plurality of electrodes, a second substrate having a plurality of electrodes perpendicular to the first substrate. The first and second substrates disposed between the polarizers. An LCD filter grid has nematic liquid crystals inside the grid to form a plurality of pixels. Each pixel comprises a filter and the LCD filter grid is disposed between the substrates with a plurality of electrodes. A voltage driver controls the voltage level applied to the electrodes based on the intensity of the measured light wherein the voltage determines the amount of light transmitted through the apparatus. Each pixel is independently addressed by the voltage driver.

公开(公告)号：US07329852B2

公开(公告)日：2008-02-12

申请号：US11487777

申请日：2006-07-17

Applicant: Canwen Liu

Inventor： Canwen Liu

IPC: H01L31/00

CPC classification number: G01N30/8641 ,  G01N21/274 ,  G01N2201/12784 ,  G06T5/002

Abstract: Automatic background signal removal for input data, such as for spectrometry data, is provided. Input data includes input pixel points, such as those read by a CCD spectrometer or chromatography device, and intensity values corresponding to the data points. A distribution of changes in the intensity values between the data points is determined, and a noise level is judged by setting a threshold for the distribution. A noise region is identified as a predetermined number of consecutive input points for which the changes in the intensity values are within the noise level. Adjacent noise regions may be connected and the background signal is thus determined and subtracted. A spike noise region may also be identified and filtered, such that a peak obtained from fewer than a second predetermined number of the pixel points is determined as a spike, not a true peak. Non-spike large amplitude noises are optionally filtered.

Abstract translation: 提供输入数据的自动背景信号去除，如光谱数据。 输入数据包括诸如由CCD光谱仪或色谱装置读取的像素点和对应于数据点的强度值的输入像素点。 确定数据点之间强度值变化的分布，并通过设定分配阈值来判断噪声水平。 噪声区域被识别为强度值的变化在噪声水平内的预定数量的连续输入点。 可以连接相邻的噪声区域，从而确定并减去背景信号。 也可以识别和滤波尖峰噪声区域，使得从少于第二预定数量的像素点获得的峰值被确定为尖峰，而不是真峰值。 可选地过滤非尖峰大振幅噪声。

公开(公告)号：US20060255249A1

公开(公告)日：2006-11-16

申请号：US11487777

申请日：2006-07-17

Applicant: Canwen Liu

Inventor： Canwen Liu

IPC: G06M7/00

CPC classification number: G01N30/8641 ,  G01N21/274 ,  G01N2201/12784 ,  G06T5/002

Abstract: Automatic background signal removal for input data, such as for spectrometry data, is provided. Input data includes input pixel points, such as those read by a CCD spectrometer or chromatography device, and intensity values corresponding to the data points. A distribution of changes in the intensity values between the data points is determined, and a noise level is judged by setting a threshold for the distribution. A noise region is identified as a predetermined number of consecutive input points for which the changes in the intensity values are within the noise level. Adjacent noise regions may be connected and the background signal is thus determined and subtracted. A spike noise region may also be identified and filtered, such that a peak obtained from fewer than a second predetermined number of the pixel points is determined as a spike, not a true peak. Non-spike large amplitude noises are optionally filtered.

Abstract translation: 提供输入数据的自动背景信号去除，如光谱数据。 输入数据包括诸如由CCD光谱仪或色谱装置读取的像素点和对应于数据点的强度值的输入像素点。 确定数据点之间强度值变化的分布，并通过设定分配阈值来判断噪声水平。 噪声区域被识别为强度值的变化在噪声水平内的预定数量的连续输入点。 可以连接相邻的噪声区域，从而确定并减去背景信号。 也可以识别和滤波尖峰噪声区域，使得从少于第二预定数量的像素点获得的峰值被确定为尖峰，而不是真峰值。 可选地过滤非尖峰大振幅噪声。

公开(公告)号：US20050285023A1

公开(公告)日：2005-12-29

申请号：US10874420

申请日：2004-06-23

Applicant: Canwen Liu

Inventor： Canwen Liu

IPC: G01N21/27 ,  G01N30/86 ,  G06M7/00 ,  G06T5/00

CPC classification number: G01N30/8641 ,  G01N21/274 ,  G01N2201/12784 ,  G06T5/002

Abstract: Automatic background signal removal for input data, such as for spectrometry data, is provided. Input data includes input pixel points, such as those read by a CCD spectrometer of chromatography device, and intensity values corresponding to the data points. A distribution of changes in the intensity values between the data points is determined, and a noise level is judged by setting a threshold for the distribution. A noise region is identified as a predetermined number of consecutive input points for which the changes in the intensity values are within the noise level. Adjacent noise regions may be connected and the background signal is thus determined and subtracted. A spike noise region may also be identified and filtered, such that a peak obtained from fewer than a second predetermined number of the pixel points is determined as a spike, not a true peak. Non-spike large amplitude noises are optionally filtered.

Abstract translation: 提供输入数据的自动背景信号去除，如光谱数据。 输入数据包括诸如由色谱装置的CCD光谱仪读取的输入像素点和对应于数据点的强度值。 确定数据点之间强度值变化的分布，并通过设定分配阈值来判断噪声水平。 噪声区域被识别为强度值的变化在噪声水平内的预定数量的连续输入点。 可以连接相邻的噪声区域，从而确定并减去背景信号。 也可以识别和滤波尖峰噪声区域，使得从少于第二预定数量的像素点获得的峰值被确定为尖峰，而不是真峰值。 可选地过滤非尖峰大振幅噪声。